Relevant bibliographies by topics / Love wave acoustic sensor

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Academic literature on the topic 'Love wave acoustic sensor'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Love wave acoustic sensor"

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Hu, You Wang, Ji Wen Xiang, and Xiao Yan Sun. "Temperature Compensation Experiment of Love Wave Sensor." Advanced Materials Research 490-495 (March 2012): 673–77. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.673.

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Love wave sensor is one of the most promising SAW sensors for liquid detection, because of acoustic energy can be confined in sensing surface by waveguide layer of Love wave sensor, which resulted in higher sensitivity to surface perturbations. Temperature coefficient of frequency (TCF) has deep effect on effective sensitivity of Love wave sensor. In order to improve the performance of Love wave sensor, the theoretical relationship of TCF on substrates and guiding layers temperature properties is researched. It found that reasonable combinations of substrates and guiding layers was a feasible method to obtain effective temperature compensation, and experimental TCF of sensitive element is reduced to 0.75ppm/°C by this method.
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Tian, Yahui, Honglang Li, Wencan Chen, et al. "A Novel Love Wave Mode Sensor Waveguide Layer with Microphononic Crystals." Applied Sciences 11, no. 17 (2021): 8123. http://dx.doi.org/10.3390/app11178123.

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Surface acoustic wave (SAW) sensors have been applied in various areas with many advantages, such as their small size, high sensitivity and wireless and passive form. Love wave mode sensors, an important kind of SAW sensor, are mostly used in biology and chemistry monitoring, as they can be used in a liquid environment. Common Love wave mode sensors consist of a delay line with waveguide and sensitive layers. To extend the application of Love wave mode sensors, this article reports a novel Love wave mode sensor consisting of a waveguide layer with microphononic crystals (PnCs). To analyze the properties of the new structure, the band structure was calculated, and transmission was obtained by introducing delay line structures and quasi-three-dimensional models. Furthermore, devices with a traditional structure and novel structure were fabricated. The results show that, by introducing the designed microstructure of phononic crystals in the waveguide layer, the attenuation was barely increased, and the frequency was shifted by a small amount. In the liquid environmental experiments, the novel structure with micro PnCs shows even better character than the traditional one. Moreover, the introduced microstructure can be extended to microreaction tanks for microcontrol. Therefore, this novel Love wave mode sensor is a promising application for combining acoustic sensors and microfluidics.
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Viespe, Dinca, Popescu-Pelin, and Miu. "Love Wave Surface Acoustic Wave Sensor with Laser-Deposited Nanoporous Gold Sensitive Layer." Sensors 19, no. 20 (2019): 4492. http://dx.doi.org/10.3390/s19204492.

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Laser-deposited gold immobilization layers with different porosities were incorporated into Love Wave Surface Acoustic Wave sensors (LW-SAWs). Acetylcholinesterase (AChE) enzyme was immobilized onto three gold interfaces with different morphologies, and the sensor response to chloroform was measured. The response of the sensors to various chloroform concentrations indicates that their sensing properties (sensitivity, limit of detection) are considerably improved when the gold layers are porous, in comparison to a conventional dense gold layer. The results obtained can be used to improve properties of SAW-based biosensors by controlling the nanostructure of the gold immobilization layer, in combination with other enzymes and proteins, since the design of the present sensor is the same as that for a Love Wave biosensor.
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Dbibih, Fatima-Ezzahraa, Meddy Vanotti, Valerie Soumann, Jean-Marc Cote, Lyes Djoumi, and Virginie Blondeau-Patissier. "Measurement of PM10 and PM2.5 Using SAW Sensors-Based Rayleigh Wave and Love Wave." Engineering Proceedings 6, no. 1 (2021): 81. http://dx.doi.org/10.3390/i3s2021dresden-10129.

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Particulate matter (PM) is reported to be dangerous and can cause respiratory and health issues. Regulations, based on PM concentration, have been implemented to limit human exposition to air pollution. An innovative system with surface acoustic wave (SAW) sensors combined with a 3 Lpm cascade impactor was developed by our team for real time mass concentration measurements. In this study, we compare the PM sensitivity of two types of SAW sensors. The first one consists of delay lines based on Rayleigh waves propagating on a Lithium Niobate Y-X 128° substrate. The second one is a based-on Love waves on AT-Quartz. Aerosols were generated from NaCl for PM2.5 and from Silicon carbide for PM10. The sensors’ responses was compared to a reference sensor based on optical measurements. The sensitivity of the Rayleigh wave-based sensor is clearly lower than the Love wave sensor for both PMs. Although less sensitive, Rayleigh wave sensors remain very promising for the development of self-cleaning sensors using RF power due to their high electromechanical factor. To check the performance of our system in real conditions, we tested the sensitivity to PM from cigarette smoke using Rayleigh SAW. The PM2.5 stage showed a phase shift while the PM10 did not respond. This result agrees with previous studies which reported that the size of particles from cigarette smoke varies between 0.1 to 1.5 µm. A good correlation between the reference sensor’s response and the phase variation of SAW sensors was obtained.
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Zhang, Guigen. "Nanostructure-Enhanced Surface Acoustic Waves Biosensor and Its Computational Modeling." Journal of Sensors 2009 (2009): 1–11. http://dx.doi.org/10.1155/2009/215085.

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Surface acoustic wave (SAW) devices are considered to be very promising in providing a high-performance sensing platform with wireless and remote operational capabilities. In this review, the basic principles of SAW devices and Love-mode SAW-based biosensors are discussed first to illustrate the need for surface enhancement for the active area of a SAW sensor. Then some of the recent efforts made to incorporate nanostructures into SAW sensors are summarized. After that, a computational approach to elucidate the underlying mechanism for the operations of a Love-mode SAW biosensor with nanostructured active surface is discussed. Finally, a modeling example for a Love-mode SAW sensor with skyscraper nanopillars added to in its active surface along with some selected results is presented.
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Wang, Yan, Su-Peng Liang, Shu-Lin Shang, Yong-Bing Xiao, and Yu-Xin Yuan. "Finite element simulation of Love wave sensor for the detection of volatile organic gases." Chinese Physics B 31, no. 3 (2022): 030701. http://dx.doi.org/10.1088/1674-1056/ac3ec9.

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The three-dimensional (3D) finite element (FE) simulation and analysis of Love wave sensors based on polyisobutylene (PIB) layers/SiO2/ST-90°X quartz structure are presented in this paper, as well as the investigation of coupled resonance effect on the acoustic properties of the devices. The mass sensitivity of the basic Love wave device with SiO2 guiding layers is solved analytically. And the highest mass sensitivity of 128 m2/kg is obtained as h s/λ = 0.175. The sensitivity of the Love wave sensors for sensing volatile organic compounds (VOCs) is greatly improved due to the presence of coupled resonance induced by the PIB nanorods on the device surface. The frequency shifts of the sensor corresponding to CH2Cl2, CHCl3, CCl4, C2Cl4, CH3Cl and C2HCl3 with the concentration of 100 ppm are 1.431 kHz, 5.507 kHz, 13.437 kHz, 85.948 kHz, 0.127 kHz and 17.879 kHz, respectively. The viscoelasticity influence of the sensitive material on the characteristics of SAW sensors is also studied. By taking account of the viscoelasticity of the PIB layers, the sensitivities of the SAW sensors with the PIB film and PIB nanorods decay in different degree. The gas sensing property of the Love wave sensor with PIB nanorods is superior to that of the PIB films. Meanwhile, the Love wave sensors with PIB sensitive layers show good selectivity to C2Cl4, making it an ideal selection for gas sensing applications.
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Varadan, Vasundara V., Sunil Gangadharan, and Vijay K. Varadan. "Love wave surface acoustic wave sensor for ice detection on aircraft." Journal of the Acoustical Society of America 106, no. 4 (1999): 2269. http://dx.doi.org/10.1121/1.427751.

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Tarbague, H., J. L. Lachaud, S. Destor, et al. "PDMS (Polydimethylsiloxane) Microfluidic Chip Molding for Love Wave Biosensor." Journal of Integrated Circuits and Systems 5, no. 2 (2010): 125–33. http://dx.doi.org/10.29292/jics.v5i2.318.

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We present the development of new Polydimethylsiloxane (PDMS) chips, which are coupled with Love acoustic wave sensors to realize a detection cell of bio-organisms in liquid media. Three generations of biocompatible PDMS chips have been developed. Built-in thermistors allow a thermal control (±0.05°C). Unlike the usual assemblies, this chip is maintained by pressure on the sensor and not sticked on its surface. This technique makes it entirely removable and cleanable. Therefore, the surface of the sensor can be functionalized or regenerated. The realization of these chips is quick and inexpensive.We here outline the development of these different cells and present characteristics of the resulting microsensors, depending on the chip configuration. Real-time responses during antibodies immobilization are presented and analyzed. Antibodies at typical concentration of 45μg/ml are successfully fast detected, with response times from 350s for static down to 90s for dynamic detection setup, with similar sensitivity. Discussions on the mechanical fluid behaviour at the near sensor surface allow to better understand these results and to investigate further developments aiming at improving the quality of the fluid stream in order to even increase future sensor characteristics.
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Wang, Tao, Ryan Murphy, Jing Wang, Shyam S. Mohapatra, Subhra Mohapatra, and Rasim Guldiken. "Perturbation Analysis of a Multiple Layer Guided Love Wave Sensor in a Viscoelastic Environment." Sensors 19, no. 20 (2019): 4533. http://dx.doi.org/10.3390/s19204533.

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Surface acoustic wave sensors have the advantage of fast response, low-cost, and wireless interfacing capability and they have been used in the medical analysis, material characterization, and other application fields that immerse the device under a liquid environment. The theoretical analysis of the single guided layer shear horizontal acoustic wave based on the perturbation theory has seen developments that span the past 20 years. However, multiple guided layer systems under a liquid environment have not been thoroughly analyzed by existing theoretical models. A dispersion equation previously derived from a system of three rigidly coupled elastic mass layers is extended and developed in this study with multiple guided layers to analyze how the liquid layer’s properties affect the device’s sensitivity. The combination of the multiple layers to optimize the sensitivity of an acoustic wave sensor is investigated in this study. The Maxwell model of viscoelasticity is applied to represent the liquid layer. A thorough analysis of the complex velocity due to the variations of the liquid layer’s properties and thickness is derived and discussed to optimize multilayer Surface acoustic wave (SAW) sensor design. Numerical simulation of the sensitivity with a liquid layer on top of two guided layers is investigated in this study as well. The parametric investigation was conducted by varying the thicknesses for the liquid layer and the guided layers. The effect of the liquid layer viscosity on the sensitivity of the design is also presented in this study. The two guided layer device can achieve higher sensitivity than the single guided layer counterpart in a liquid environment by optimizing the second guided layer thickness. This perturbation analysis is valuable for Love wave sensor optimization to detect the liquid biological samples and analytes.
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Segura Chávez, Pedro A., Jérémy Bonhomme, Mohamed Lamine Fayçal Bellaredj, et al. "Love Wave Sensor with High Penetration Depth for Potential Application in Cell Monitoring." Biosensors 12, no. 2 (2022): 61. http://dx.doi.org/10.3390/bios12020061.

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Love wave (L-SAW) sensors have been used to probe cell monolayers, but their application to detect changes beyond the focal adhesion points on cell monolayers, as viscosity changes on the cytoskeleton, has not been explored. In this work we present for the first time a Love wave sensor with tuned penetration depth and sensitivity to potentially detect mechanical changes beyond focal adhesion points of cell monolayers. We designed and fabricated a Love wave sensor operating at 30 MHz with sensitivity to detect viscous changes between 0.89 and 3.3 cP. The Love wave sensor was modeled using an acoustic transmission line model, whereas the response of interdigital transducers (IDTs) was modeled with the Campbell’s cross-field circuit model. Our design uses a substrate with a high electromechanical coupling coefficient (LiNbO3 36Y-X), and an 8-µm polymeric guiding layer (SU-8). The design aims to overcome the high insertion losses of viscous liquid environments, and the loss of sensitivity due to the low frequency. The fabricated sensor was tested in a fluidic chamber glued directly to the SU-8 guiding layer. Our experiments with liquids of viscosity similar to those expected in cell monolayers showed a measurable sensor response. In addition, experimentation with SaOs-2 cells within a culture medium showed measurable responses. These results can be of interest for the development of novel cell-based biosensors, and novel characterization tools for cell monolayers.
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Dissertations / Theses on the topic "Love wave acoustic sensor"

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Gizeli, Electra. "New acoustic wave sensor geometries." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282004.

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Andrade, Santos Marlo. "Wireless system for passive surface acoustic wave sensors." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0146.

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Avec les progrès du développement des appareils connectés et de l’Internet des objets (IoT), la surveillance continue des paramètres physiques et chimiques est devenue un défi actuel pour notre société.De plus, les dispositifs à ondes acoustiques de surface (SAW), largement utilisés comme filtres dans les télécommunications, remplissent désormais la fonction de capteurs.C’est dans ces deux contextes que se situent les travaux de cette thèse.L'objectif est de développer un système de lecture sans fil utilisant l'un de ces capteurs, notamment le capteur à ondes de Love (Love Wave ou LW) à sensibilité reconnue en milieu liquide. Peu de travaux impliquent ce dispositif en effectuant une lecture à distance, et exclusivement en utilisant sa réponse acoustique. Dans cette thèse, nous employons une approche plus générale considérant sa réponse électromagnétique et un protocole spécifique de mesure et d'acquisition de données pour détecter des solutions salines à sa surface. Compte tenu de sa nature passive, un système de lecture sans fil est présenté, ainsi qu'une discussion sur ses principales caractéristiques, avantages, inconvénients et limites<br>With the advancement in the development of connected devices and the Internet of Things (IoT), continuous monitoring of physical and chemical parameters has become a current challenge for our society. Additionally, surface acoustic wave (SAW) devices, widely used as filters in telecommunications, now serve the function of sensors.It is within these two contexts that the work of this thesis is situated. The goal is to develop a wireless reading system using one of these sensors, particularly the Love Wave (LW) sensor with recognized sensitivity in liquid media. Few studies involve this device by performing a remote reading, and exclusively using its acoustic response.In this thesis, we employ a more general approach considering its electromagnetic response and a specific measurement and data acquisition protocol for detecting saline solutions on its surface. Given its passive nature, a wireless reading system is demonstrated, as well as discussion on its key characteristics, advantages, disadvantages, and limitations
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Manohar, Greeshma. "Investigation of Various Surface Acoustic Wave Design Configurations for Improved Sensitivity." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4365.

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Surface acoustic wave sensors have been a focus of active research for many years. Its ability to respond for surface perturbation is a basic principle for its sensing capability. Sensitivity to surface perturbation changes with every inter-digital transducer (IDT) design parameters, substrate selection, metallization choice and technique, delay line length and working environment. In this thesis, surface acoustic wave (SAW) sensors are designed and characterized to improve sensitivity and reduce loss. To quantify the improvements with a specific design configuration, the sensors are employed to measure temperature. Four SAW sensors design configurations, namely bi-directional, split electrode, single phase unidirectional transducer (SPUDT) and metal grating on delay line (shear transvers wave sensors) are designed and then fabricated in Nanotechnology Research and Education Center (NREC) facility using traditional MEMS fabrication processes Additionally, sensors are then coated with guiding layer SU8-2035 of 40 m using spin coating and SiO2 of 6 m using plasma enhanced chemical vapor deposition (PECVD) process. Sensors are later diced and tested for every 5oC increment using network analyzer for temperature ranging from 30oC–0.5oC to 80oC–0.5oC. Data acquired from network analyzer is analyzed using plot of logarithmic magnitude, phase and frequency shift. Furthermore, to investigate the effect of metallization technique on the sensor performance, sensors are also fabricated on substrates that were metallized at a commercial MEMS foundry. All in-house and outside sputtered sensor configurations are compared to investigate quality of sputtered metal on wafer. One with better quality sputtered metal is chosen for further study. Later sensors coated with SU8 and SiO2 as guiding layer are compared to investigate effect of each waveguide on sensors and determine which waveguide offers better performance. The results showed that company sputtered sensors have higher sensitivity compared to in-house sputtered wafers. Furthermore after comparing SU8 and SiO2 coated sensors in the same instrumental and environmental condition, it was observed that SU8 coated di-directional and single phase unidirectional transducer (SPUDT) sensors showed best response.
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Onen, Onursal. "Analytical Modeling, Perturbation Analysis and Experimental Characterization of Guided Surface Acoustic Wave Sensors." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4555.

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In this dissertation, guided surface acoustic wave sensors were investigated theoretically and experimentally in detail for immunosensing applications. Shear horizontal polarized guided surface acoustic wave propagation for mass loading sensing applications was modeled using analytical modeling and characterized by perturbation analysis. The model verification was performed experimentally and a surface acoustic wave immunosensor case study was presented. The results of the immunosensing were also investigated using the perturbation analysis. Guided surface acoustic wave propagation problem was investigated in detail for gravimetric (or mass loading) guided wave sensors, more specifically for immunosensors. The analytical model was developed for multilayer systems taking viscoelasticity into account. The closed form algebraic solutions were obtained by applying appropriate boundary conditions. A numerical approach was used to solve dispersion equation. Detailed parametric investigation of dispersion curves was conducted using typical substrate materials and guiding layers. Substrate types of ST-cut quartz, 41° YX lithium Niobate and 36° YX lithium tantalate with guiding layers of silicon dioxide, metals (chromium and gold), and polymers (Parylene-C and SU-8) were investigated. The effects of frequency and degree of viscoelasticity were also studied. The results showed that frequency only has effect on thickness with same shaped dispersion curves. Dispersion curves were found to be unaffected by the degree of viscoelasticity. It was also observed that when there was a large shear velocity difference between substrate and guiding layer, a transition region with a gradual decrease in phase velocity was obtained. However, when shear velocities were close, a smooth transition was observed. Furthermore, it was observed that, large density differences between substrate and guiding layer resulted in sharp and with nearly constant slope transition. Smooth transition was observed for the cases of minimal density differences. Experimental verification of the model was done using multi-layer photoresists. It was shown that with modifications, the model was able to represent the cases studied. Perturbation equations were developed with first order approximations by relating the slope of the dispersion curves with sensitivity. The equations were used to investigate the sensitivity for material selection (substrate, guiding layer, and mass perturbing layer) and degree of viscoelasticity. The investigations showed that the sensitivity was increased by using guiding layers with lower shear velocities and densities. Among the guiding layers investigated, Parylene C showed the highest sensitivity followed by gold and chrome. The perturbation investigations were also extended to viscoelasticity and to protein layers for immunosensing applications. It was observed that, viscous behavior resulted in slightly higher sensitivity; and sensitivity to protein layers was very close to sensitivity for polymers. The optimum case is found to be ST-cut quartz with Parylene-C guiding layer for protein layer sensing. Finally, an immunosensing case study was presented for selective capture of protein B-cell lymphoma 2 (Bcl-2), which is elevated in many cancer types including ovarian cancer. The immunosensor was designed, fabricated, and experimentally characterized. An application-specific surface functionalization scheme with monoclonal antibodies, ODMS, Protein A/G and Pluronic F127 was developed and applied. Characterization was done using the oscillation frequency shift of with sensor used as the feedback element of an oscillator circuit. Detection of Bcl-2 with target sensitivity of 0.5 ng/ml from buffer solutions was presented. A linear relation between frequency shift and Bcl-2 concentration was observed. The selectivity was shown with experiments by introducing another protein, in addition to Bcl-2, to the buffer. It was seen that similar detection performance of Bcl-2 was obtained even with presence of control protein in very high concentrations. The results were also analyzed with perturbation equations.
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Rocha, Gaso María Isabel. "Analysis, implementation and validation of a Love mode surface acoustic wave device for its application as sensor of biological processes in liquid media." Doctoral thesis, Editorial Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/32492.

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En las últimas dos décadas, han surgido diferentes tecnologías acústicas para aplicaciones biosensoras como alternativas a tecnologías de detección bien establecidas ¿acústicas o ópticas¿ como son la Microbalanza de Cuarzo (QCM, por sus siglas en inglés) y la Resonancia de Plasmón de Superficie (SPR, de sus siglas en inglés). En la primera parte de este documento se revisan dichas tecnologías alternativas para aplicaciones en medio líquido. Como resultado de esta revisión, se determina que los dispositivos de onda acústica superficial Love (LW, de sus siglas en inglés) son los más prometedores y viables para conseguir el principal objetivo de esta Tesis, que es establecer una comparativa en las mismas condiciones entre inmnosensores desarrollados con la tecnología seleccionada en esta tesis y los inmunosensores desarrollados con QCMs de Alta Frecuencia Fundamental (HFF-QCM, por sus siglas en inglés). Después de esta revisión se presenta el estado del arte de los dispositivos LW en su aplicación como biosensores, así como una discusión de las tendencias y retos actuales de este tipo de sensores. Posteriormente se reúne la información más actualizada sobre aspectos de diseño, principios de operación y modelado de estos sensores. Algunos aspectos de diseño son estudiados y probados para establecer el diseño final de los dispositivos LW. Previamente a su fabricación, también se realizan simulaciones para modelar el comportamiento del dispositivo elegido previamente a su fabricación. Posteriormente, se describe la fabricación del dispositivo así como la celda de flujo diseñada para trabajar con el dispositivo en medios líquidos. Adicionalmente, un sistema electrónico de caracterización, previamente validado para sensores QCM, se adapta para sensores LW. Como resultados, se valida el sistema electrónico para caracterizar los sensores LW fabricados y montados en la celda de flujo y, finalmente, se desarrolla un inmunosensor para la detección del pesticida carbaril que se compara con otras tecnologías inmunosensoras.<br>In the last two decades, different acoustic technologies for biosensors applications have emerged as promising alternatives to other better established detection technologies ¿ acoustic or optic ones- such as traditional Quartz Crystal Microbalance (QCM) and Surface Plasmon Resonance (SPR). The alternative acoustic technologies for in liquid measurements are reviewed in this manuscript. Surface Acoustic Wave (SAW) Love Mode or Love Wave (LW) sensors are determined to be the most promising and viable option to work with for achieving the main aim of this Thesis. Such aim is the development of a LW immunosensor for its comparison with the same application based on High Fundamental Frequency-QCM (HFF-QCM) sensors and under the same conditions. Consequently, the state-of-the-art of LW devices for biosensing is provided and a discussion about the current trends and future challenges of these sensors is presented. In order to start working with suitable LW devices, upto- date information regarding the design aspects, operation principles and modeling of such devices is gathered. Some design aspects are explored and tested to establish the design of the final LW device. Different simulations for modeling the chosen device behavior are carried out before its fabrication. Later, the device fabrication is described. Next, to start working with the fabricated device in liquid media, a flow cell is designed and implemented. In addition, an electronic characterization system, previously validated for QCM sensors, is adapted and tested for the fabricated LW device. As results, the adapted electronic characterization system is validated for LW devices mounted in the fabricated flow cell and, finally, a LW-based immunosensor for the determination of carbaryl pesticide was developed and compared with other immunosensor technologies.<br>Rocha Gaso, MI. (2013). Analysis, implementation and validation of a Love mode surface acoustic wave device for its application as sensor of biological processes in liquid media [Tesis doctoral]. Editorial Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/32492<br>Alfresco
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Francis, Laurent A. "Thin film acoustic waveguides and resonators for gravimetric sensing applications in liquid." Université catholique de Louvain, 2006. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-01272006-113333/.

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The fields of health care and environment control have an increasing demand for sensors able to detect low concentrations of specific molecules in gaseous or liquid samples. The recent introduction of microfabricated devices in these fields gave rise to sensors with attractive properties. A cutting edge technology is based on guided acoustic waves, which are perturbed by events occurring at the nanometer scale. A first part of the thesis investigates the Love mode waveguide, a versatile structure in which a thin film is guiding the acoustic wave generated in a piezoelectric substrate. A systematic analysis of its sensitivity was obtained using a transmission line model generalized to discriminate the rigid or viscous nature of the probed layers. We developed a novel integrated combination of the Love mode device with a Surface Plasmon Resonance optical sensor to quantify the thickness and the composition of soft layers. The electromagnetic interferences in the recorded signal were modeled to determine the phase velocity in the sensing area and to provide new mechanisms for an enhanced sensitivity. The experimental aspects of this work deal with the fabrication, the important issue of the packaging and the sensitivity calibration of the Love mode biosensor. A second part of the thesis investigates nanocrystalline diamond under the form of a thin film membrane suspended to a rigid silicon frame. The high mechanical and chemical resistance of nanocrystalline diamond, close to single-crystal diamond, open ways to membrane based acoustic sensors such as Flexural Plate Wave and thin Film Bulk Acoustic Resonators (FBAR). A novel dynamic characterization of the thin film is reported and the properties of composite FBAR devices including a diamond thin film membrane and a piezoelectric aluminum nitride layer are assessed using the perturbation theory. This study is applied to evaluate the high sensing potential of the first prototype of an actual diamond-based composite FBAR.
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García, Narbón José Vicente. "Improved characterization systems for quartz crystal microbalance sensors: parallel capacitance compensation for variable damping conditions and integrated platform for high frequency sensors in high resolution applications." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/63249.

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[EN] Different electronic interfaces have been proposed to measure major parameters for the characterization of quartz crystal microbalance (QCM) during the last two decades. The measurement of the adequate parameters of the sensor for a specific application is very important, since an error in this measure can lead to an error in the interpretation of the results. The requirements of the system of characterization depend on the application. In this thesis we propose two characterization systems for two types of applications that involve the majority of sensor applications: 1) Characterization of materials under variable damping conditions and 2) Detection of substances with high measurement resolution. The proposed systems seek to solve the problems detected in the systems currently in use. For applications in which the sensor damping varies during the experiment, we propose a system based on a new configuration of the technique of automatic capacitance compensation (ACC). This new configuration provides the measure of the series resonance frequency, the motional resistance and the parallel capacitance of the sensor. Moreover, it allows an easy calibration of the system that improves the precision in the measurement. We show the experimental results for 9 and 10 MHz crystals in fluid media, with different capacitances in parallel, showing the effectiveness in the capacitance compensation. The system presents some deviation in frequency with respect to the series resonance frequency, as measured with an impedance analyser. These deviations are due to the non-ideal, specific behaviour of some of the components of the circuit. A new circuit is proposed as a possible solution to this problem. For high-resolution applications we propose an integrated platform to characterize high-frequency acoustic sensors. The proposed system is based on a new concept in which the sensor is interrogated by means of a very stable, low-noise external source at a constant frequency, while the changes provoked by the charge in the phase of the sensor are monitored. The use of high-frequency sensors enhances the sensitivity of the measure, whereas the design characterization system reduces the noise in the measurement. The result is an improvement in the limit of detection (LOD). This way, we achieve one of the challenges in the acoustic high-frequency devices. The validation of the platform is performed by means of an immunosensor based in high fundamental frequency QCM crystals (HFF-QCM) for the detection of two pesticides: carbaryl and thiabendazole. The results obtained for carbaryl are compared to the results obtained by another high-frequency acoustic technology based in Love sensors, with the optical technique based in surface plasmonic resonance and with the gold standard technique Enzyme Linked Immunoassay (ELISA). The LOD obtained with the acoustic sensors HFF-QCM and Love is similar to the one obtained with ELISA and improves by one order of magnitude the LOD obtained with SPR. The conceptual ease of the proposed system, its low cost and the possibility of miniaturization of the quartz resonator, allows the characterization of multiple sensors integrated in an array configuration, which will allow in the future to achieve the challenge of multianalyte detection for applications of High-Throughput Screening (HTS).<br>[ES] Durante las dos últimas décadas se han propuesto diferentes interfaces electrónicos para medir los parámetros más importantes de caracterización de los cristales de microbalanza de cuarzo (QCM). La medida de los parámetros adecuados del sensor para una aplicación específica es muy importante, ya que un error en la medida de dichos parámetros puede resultar en un error en la interpretación de los resultados. Los requerimientos del sistema de caracterización dependen de la aplicación. En esta tesis se proponen dos sistemas de caracterización para dos ámbitos de aplicación que comprenden la mayoría de las aplicaciones con sensores QCM: 1) Caracterización de materiales bajo condiciones de amortiguamiento variable y 2) detección de sustancias con alta resolución de medida. Los sistemas propuestos tratan de resolver la problemática detectada en los ya existentes. Para aplicaciones en las que el amortiguamiento del sensor varía durante el experimento, se propone un sistema basado en una nueva configuración de la técnica de compensación automática de capacidad (ACC). La nueva configuración proporciona la medida de la frecuencia de resonancia serie, la resistencia dinámica y la capacidad paralelo del sensor. Además, permite una fácil calibración del sistema que mejora la precisión en la medida. Se presentan resultados experimentales para cristales de 9 y 10MHz en medios fluidos, con diferentes capacidades en paralelo, demostrando la efectividad de la compensación de capacidad. El sistema presenta alguna desviación en frecuencia con respecto a la frecuencia resonancia serie, medida con un analizador de impedancias. Estas desviaciones son explicadas convenientemente, debidas al comportamiento no ideal específico de algunoscomponentes del circuito. Una nueva propuesta de circuito se presenta como posible solución a este problema. Para aplicaciones de alta resolución se propone una plataforma integrada para caracterizar sensores acústicos de alta frecuencia. El sistema propuesto se basa en un nuevo concepto en el que el sensor es interrogado, mediante una fuente externa muy estable y de muy bajo ruido, a una frecuencia constante mientras se monitorizan los cambios producidos por la carga en la fase del sensor. El uso de sensores de alta frecuencia aumenta la sensibilidad de la medida, por otro lado, el sistema de caracterización diseñado reduce el ruido en la misma. El resultado es una mejora del límite de detección (LOD). Se consigue con ello uno de los retos pendientes en los dispositivos acústicos de alta frecuencia. La validación de la plataforma desarrollada se realiza con una aplicación de un inmunosensor basado en cristales QCM de alta frecuencia fundamental (HFF-QCM) para la detección de dos pesticidas: carbaryl y tiabendazol. Los resultados obtenidos para el Carbaryl se comparan con los obtenidos con otra tecnología acústica de alta frecuencia basada en sensores Love, con la técnica óptica basada resonancia superficial de plasmones (SPR) y con la técnica de referencia Enzyme Linked Immuno Assay (ELISA). El LOD obtenido con los sensores acústicos HFFQCM y Love es similar al obtenido con las técnicas ELISA y mejora en un orden de magnitud al obtenido con SPR. La sencillez conceptual del sistema propuesto junto con su bajo coste, así como la capacidad de miniaturización del resonador de cuarzo hace posible la caracterización de múltiples sensores integrados en una configuración en array, esto permitirá en un futuro alcanzar el reto de la detección multianalito para aplicaciones High-Throughput Screening (HTS).<br>[CAT] Durant les dues últimes dècades s'han proposat diferents interfases electrònics per a mesurar els paràmetres més importants de caracterització dels cristalls de microbalança de quars (QCM). La mesura dels paràmetres adequats del sensor per a una aplicació específica és molt important, perquè un error en la interpretació dels resultats pot resultar en un error en la interpretació dels resultats. Els requeriments del sistema de caracterització depenen de l'aplicació. En aquesta tesi, es proposen dos sistemes de caracterització per a dos àmbits d'aplicació que comprenen la majoria de les aplicacions amb sensors QCM: 1) Caracterització de materials sota condicions d'amortiment variable i 2) detecció de substàncies amb alta resolució de mesura. Els sistemes proposats tracten de resoldre la problemàtica detectada en els ja existents. Per a aplicacions en les quals l'amortiment del sensor varia durant l'experiment, es proposa un sistema basat en una nova configuració de la tècnica de compensació automàtica de capacitat (ACC). La nova configuració proporciona la mesura de la freqüència de ressonància sèrie, la resistència dinàmica i la capacitat paral¿lel del sensor. A més, permet un calibratge fàcil del sistema que millora la precisió de la mesura. Es presenten els resultats experimentals per a cristalls de 9 i 10 MHz en mitjans fluids, amb diferents capacitats en paral¿lel, demostrant l'efectivitat de la compensació de capacitat. El sistema presenta alguna desviació en freqüència respecte a la freqüència ressonància sèrie, mesurada amb un analitzador d'impedàncies. Aquestes desviacions són explicades convenientment, degudes al comportament no ideal específic d'alguns components del circuit. Una nova proposta de circuit es presenta com a possible solució a aquest problema. Per a aplicacions d'alta resolució es proposa una plataforma integrada per a caracteritzar sensors acústics d'alta freqüència. El sistema proposat es basa en un nou concepte en el qual el sensor és interrogat mitjançant una font externa molt estable i de molt baix soroll, a una freqüència constant mentre es monitoritzen els canvis produïts per la càrrega en la fase del sensor. L'ús de sensors d'alta freqüència augmenta la sensibilitat de la mesura, per altra banda, el sistema de caracterització dissenyat redueix el soroll en la mateixa. El resultat és una millora en el límit de detecció (LOD). S'aconsegueix amb això un dels reptes pendents en els dispositius acústics d'alta freqüència. La validació de la plataforma desenvolupada es realitza amb una aplicació d'un immunosensor basat en cristalls QCM d'alta freqüència fonamental (HFF-QCM) per a la detecció de dos pesticides: carbaryl i tiabendazol. Els resultats obtinguts per al carbaryl es comparen amb els obtinguts amb altra tecnologia acústica d'alta freqüència basada en sensors Love, amb la tècnica òptica basada en ressonància superficial de plasmons (SPR) i amb la tècnica de referència Enzyme Linked Immuno Assay (ELISA). El LOD obtingut amb els sensors acústics HFF-QCM i Love és similar al obtingut amb les tècniques ELISA i millora en un ordre de magnitud el obtingut amb SPR. La senzillesa conceptual del sistema proposat junt amb el seu baix cost, així com la capacitat de miniaturització del ressonador de quars fa possible la caracterització de múltiples sensors integrats en una configuració en array, el que permetrà en un futur assolir el repte de la detecció multianalit per a aplicacions High-Throughput Screening (HTS).<br>García Narbón, JV. (2016). Improved characterization systems for quartz crystal microbalance sensors: parallel capacitance compensation for variable damping conditions and integrated platform for high frequency sensors in high resolution applications [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/63249<br>TESIS
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Liu, Yuxin. "Etude de cristaux phononiques à base des matériaux micro/nano structurés pour la manipulation des ondes de Love." Thesis, Ecole centrale de Lille, 2019. http://www.theses.fr/2019ECLI0007.

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Le contrôle de la propagation des ondes élastiques repose principalement sur la conception de milieu artificiel à base de matériaux structurés pour obtenir une ingénierie avancée de la dispersion de la propagation. Au cours de la thèse, la dispersion du mode guidé de polarisation transverse horizontale (mode de Love) dans la structure bi-couche SiO2/Quartz (Coupe ST-90°) a été numériquement étudié et les applications résultantes explorées. Les propriétés des cristaux phononiques (CPns) à base de trous micro-usinés dans la couche SiO2 ont été étudié, ainsi que l’interaction de ce mode avec des plots déposés à la surface de cette couche guidante. Dans le cas des CPns à trous nous avons montré qu’il est possible d’ouvrir des bandes interdites, cette propriété a été exploitée pour le design d’un résonateur cavité. Les performances de ce résonateur sont étudiées en fonction des paramètres géométriques qui le caractérisent. Il est aussi proposé d’étudier l’interaction des modes de cavité avec les modes de résonance des plots déposés à la surface de la cavité. Ceci peut mieux confiner les modes et donc améliorer drastiquement le facteur de qualité. On s’est intéressé aussi à l’interaction du mode Love avec des métasurfaces à base de plots déposés à la surface de SiO2. Les couplages entre des plots de géométries identiques ou non ont donné lieu aux divers phénomènes comme analogue acoustique de Autler-Townes Splitting, résonance Fabry-Perot, transparence induite acoustiquement et résonance Fano. Les résultats présentés pourraient être utilisés pour des applications potentielles telles que le traitement du signal, le contrôle des ondes, les métamatériaux et les biocapteurs<br>The control of the propagation of elastic waves relies mainly on the design of artificial medium based on structured materials to obtain an advanced engineering of the dispersion of the propagation. During the thesis, the dispersion of the shear horizontal polarised guided mode (Love mode) in the bi-layer SiO2/Quartz (90ST-cut) structure was numerically investigated and the resulting applications explored. The properties of phononic crystals (PnCs) based on micro-machined holes in the SiO2 layer, and the interaction of this mode with pillars deposited on the surface of this guiding layer, have been studied. In the case of holey PnCs we have shown that it is possible to open band gaps, this property has been exploited for the design of a cavity resonator. The performances of this resonator are studied according to the geometrical parameters characterizing it. It is also proposed to study the interaction of the cavity resonator’s modes with the resonant modes of pillars deposited on the surface of the cavity. This has the effect of a better confinement of the modes and thus a drastic improvement of the quality factor. We also investigated the interaction between the Love mode and metasurfaces based on pillars deposited on the surface of SiO2. The couplings between pillars of identical or not geometries gave rise to various phenomena like acoustic analogue of Autler-Townes Splitting, Fabry-Perot resonance, acoustically induced transparency and Fano resonance. The results presented in this study could be used for potential applications such as signal processing, wave control, metamaterials and biosensors
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Haskell, Reichl B. "A Surface Acoustic Wave Mercury Vapor Sensor." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/HaskellRB2003.pdf.

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Sehra, Gurmukh S. "Surface acoustic wave based flavour sensor system." Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416148.

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Books on the topic "Love wave acoustic sensor"

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Morrison, Archie Todd. Development of the BASS Rake Acoustic Current Sensor: Measuring velocity in the continental shelf wave bottom boundary layer. Woods Hole Oceanographic Institution, 1997.

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Ghafouri-Bakhsh, Shakour. Interfacial electric phenomena and the thickness-shear mode acoustic wave sensor. 2000.

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Li, Paul Chi Hang. New acoustic wave devices and the development of a carbon dioxide sensor. 1995.

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Morel, Zeynep. Platelet adhesion to various surfaces studied by on-line acoustic wave sensor. U of Toronto, 1999.

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Deisingh, Anil Kenneth. Detection of Escherichia coli O157: H7 and related species by acoustic wave sensor. 2002.

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Yang, Mengsu. Network analysis of the thickness-shear mode acoustic wave sensor in the liquid phase. 1993.

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Performance Bounds on Atmospheric Acoustic Sensor Arrays Operating in a Turbulent Medium. 1. Plane-Wave Analysis. Storming Media, 2002.

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Jayarajah, Christine Nelun. Characterization of interfacial gene transcription with on-line acoustic wave sensor network and surface analysis techniques. 2005.

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Tassew, Nardos Gobena. Characterization of the HIV-1 TAR RNA-Tat peptide and drug interactions by on-line acoustic wave sensor. 2003.

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Kalantar-Zadeh, Kourosh. Investigation of a love mode acoustic wave transducer with a piezoelectric guiding layer for bio-sensing applications. 2001.

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Book chapters on the topic "Love wave acoustic sensor"

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Millicovsky, Martín J., Luis P. Schierloh, Pablo A. Kler, et al. "Love Type Surface Acoustic Wave Sensor: System for Biosensing Applications." In IFMBE Proceedings. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-61960-1_17.

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Baumann, Peter. "Surface Acoustic Wave Devices." In Selected Sensor Circuits. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-38212-4_10.

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Nelissen, Hubertus F. M., Menno R. de Jong, Fokke Venema, Martinus C. Feiters, and Roeland J. M. Nolte. "Cyclodextrins as Receptors on Surface Acoustic Wave Devices." In Sensor Technology in the Netherlands: State of the Art. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5010-1_35.

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Jen, C. K., J. C. H. Yu, Z. Wang, M. Viens, J. D. N. Cheeke, and J. D. Dai. "Thin Rod Flexural Acoustic Wave Devices: A Sensor Candidate." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3742-7_134.

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Vengsarkar, Ashish M., Kent A. Murphy, C. J. Chung, and Richard O. Claus. "Temperature Insensitive Fiber Optic Sensor for Acoustic Wave Detection." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0817-1_124.

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Bui, Lan, and Michael Thompson. "Neural Networks and Self-Referent Acoustic-Wave Sensor Signaling." In ACS Symposium Series. American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0690.ch007.

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Wagner, Jens, Manfred von Schickfus, and Siegfried Hunklinger. "Highly sensitive vapor sensor using an inductively coupled surface acoustic wave sensor." In Transducers ’01 Eurosensors XV. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59497-7_411.

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Cheng, Hongbin, Lifeng Qin, and Qing-Ming Wang. "High Temperature Acoustic Wave Gas Sensor Using Langasite Crystal Resonator." In Advanced Materials for Sustainable Developments. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470944080.ch13.

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Berthold, A., P. M. Sarro, and M. J. Vellekoop. "Quartz-to-Silicon Fusion Bonding for Micro Acoustic Wave Applications." In Sensor Technology in the Netherlands: State of the Art. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5010-1_34.

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Marquis, B. T., D. J. Frankel, W. E. Bruehs, and J. F. Vetelino. "A Study of Metallic Corrosion Using a Surface Acoustic Wave Sensor." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5947-4_82.

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Conference papers on the topic "Love wave acoustic sensor"

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Tamarin, Ollivier, Asawari Choudhari, Maxence Rube, et al. "Love wave acoustic sensor as a multisensing device in liquids." In 2024 38th Symposium on Microelectronics Technology and Devices (SBMicro). IEEE, 2024. http://dx.doi.org/10.1109/sbmicro64348.2024.10673860.

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Meyer, Johan, Widesh Gahar, Alper Sisman, Erdal Korkmaz, and Paddy French. "Output Variables of a Love-mode Surface Acoustic Wave Based Sensor for Liquid Sample Sensing." In 2024 Smart Systems Integration Conference and Exhibition (SSI). IEEE, 2024. http://dx.doi.org/10.1109/ssi63222.2024.10740520.

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Srinivasaraghavan Govindarajan, Rishikesh, Mackenzie Tobin, Zefu Ren, Michael Ricciardella, Foram Madiyar, and Daewon Kim. "Ethanol detection and monitoring using surface acoustic wave sensor." In Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIX, edited by Peter J. Shull, Tzuyang Yu, Andrew L. Gyekenyesi, and H. Felix Wu. SPIE, 2025. https://doi.org/10.1117/12.3051529.

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Pan, Haifeng, Huizhong Zhu, and Guanping Feng. "Love wave acoustic sensor for testing in liquids." In International Conference on Sensing units and Sensor Technology, edited by Yikai Zhou and Shunqing Xu. SPIE, 2001. http://dx.doi.org/10.1117/12.440201.

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Fourati, Najla, Jean-Marie Fougnion, Lionel Rousseau, et al. "Surface Acoustic Love Waves Sensor for Chemical and Electrochemical Detection." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95461.

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The present work is an experimental study of shear horizontal surface acoustic wave (SH-SAW) miniaturized sensors which offer a high potential for electrochemical applications in liquid environments and in real-time. Our devices consist of a 42° rotYX lithium tantalate (LiTaO3) substrate coated with an SU8 photoresist polymer in order to produce acoustic waveguides supporting a Love–wave. The sensors architecture and fabrication techniques are presented. Standard techniques employing continuous wave system and pulse mode measurements have shown the propagation of both surface skimming bulk waves (SSBW) and leaky SH-SAW (LSAW) on 42°rot YXLiTaO3. A numerical calculation using a simple balanced summation waves model is presented. Taking into account waves reflections and our measured velocity values, the simulation is in accordance with measurement. A copper’s electrodeposition experiment was performed to estimate the sensitivity of SAW devices. The measured sensitivity of 0.38 cm2.g−1 is discussed in the framework of previously published works concerning Love wave devices.
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Li, Fang, Lifeng Qin, and Qing-Ming Wang. "Theoretical and Experimental Studies of Love Mode Surface Acoustic Wave Sensors for Cellular Sensing." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39279.

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Cell-based biosensors have the capacity to respond to a wide range of analytes in a physiologically relevant manner. By employing living cells as sensors, bioanalytes can be screened without requiring apriori knowledge of the analyte’s chemistry. The ability to operate and screen for unknown analytes provides benefits in numerous applications, including pharmacology, cell biology, toxicology, and environmental monitoring. Recent studies have demonstrated that acoustic wave devices are capable of quantitatively probing the behaviors of cells attaching to sensor surface. Among various types of acoustic devices, Love mode sensor has many advantages in liquid environment. However, up to now, the use of Love mode devices as cell-based sensors is limited, including theoretical and experimental studies. In this study, we developed a theoretical model for cell-based Love mode sensors. The devices were designed, fabricated and utilized for cell adhesion monitoring.
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Choudhari, Asawari, Maxence Rube, Idris Sadli, Martine Sebeloue, Ollivier Tamarin, and Corinne Dejous. "Love wave acoustic sensor response in high turbidity liquid environment." In 2022 IEEE Sensors. IEEE, 2022. http://dx.doi.org/10.1109/sensors52175.2022.9967144.

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Lee, Kun-Lin, and Ioana Voiculescu. "Study of Low-Frequency Narrow Bandwidth Surface Acoustic Wave Sensor for Liquid Applications." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11618.

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Abstract Surface acoustic wave (SAW) devices have been applied as telecommunication filter for decades. Due to its simple interdigitated transducer (IDT) layout and geometry-dependent frequency, the SAW filter operates at the designed frequency and its working bandwidth could be designed to fulfill specific applications. Researchers also use SAW devices for sensing the mass or pressure in air. Furthermore, SAW device can be employed in liquid environments. The main focus of this paper is to present a Love mode device for liquid sensing. The Love mode device included a shear-horizontal surface acoustic wave (SH-SAW) delay-line configuration with a photoresist waveguide, which was deposited on split-electrode IDT and reflectors. The substrate was ST-cut quartz, and the SH-SAW propagated between the waveguide and the piezoelectric substrate. Using the Love mode device, we monitored the frequency shift corresponding to a water drop. We demonstrate that the insertion loss level is not critical for S-parameter transmission signal readout. The signal quality within the resonant narrowband is very important for water sensing. In this study, two types of SH-SAW devices were fabricated and tested; SH-SAW resonator and SH-SAW delay-line. We also demonstrate single and split electrodes electrode configurations to generate acoustic waves. Four different waveguide thickness values were tested to prove the benefit of thick polymer waveguide. This research also offers a standard method to fabricate SAW on ST-quartz for liquid application. In the future, we plan to integrate the Love mode device with a cell-culturing chamber to obtain a biosensor.
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Chen, Gui, Xiao Xie, Wen Wang, and Shitang He. "An experimental research of love wave sensor based on LiTaO3/SiO2 structure." In 2014 Symposium on Piezoelectricity,Acoustic Waves, and Device Applications (SPAWDA). IEEE, 2014. http://dx.doi.org/10.1109/spawda.2014.6996811.

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Tamarin, Ollivier, Wejdene Gongi, Maxence Rube, et al. "Frugal Love wave acoustic sensor full plaform for in situ operation in liquids." In 2023 37th Symposium on Microelectronics Technology and Devices (SBMicro). IEEE, 2023. http://dx.doi.org/10.1109/sbmicro60499.2023.10302616.

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Reports on the topic "Love wave acoustic sensor"

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Joshua Caron. SURFACE ACOUSTIC WAVE MERCURY VAPOR SENSOR. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/807870.

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JOSHUA CARON. SURFACE ACOUSTIC WAVE MERCURY VAPOR SENSOR. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/7107.

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Cullen, D. E., and T. W. Grudkowski. Research and Development of Subsurface Acoustic Wave Devices for Sensor Applications. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada152197.

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Thallapally, Praveen. Surface Acoustic Wave Sensor for Refrigerant Leak Detection - CRADA 402 (Abstract). Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2293589.

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Collier, Sandra L., and D. K. Wilson. Performance Bounds on Atmospheric Acoustic Sensor Arrays Operating in a Turbulent Medium. 1. Plane-Wave Analysis. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada403240.

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Collier, Sandra L., and D. K. Wilson. Performance Bounds on Atmospheric Acoustic Sensor Arrays Operating in a Turbulent Medium II, Spherical-Wave Analysis. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada414468.

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Zhao, George, Grang Mei, Bulent Ayhan, Chiman Kwan, and Venu Varma. DTRS57-04-C-10053 Wave Electromagnetic Acoustic Transducer for ILI of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0012049.

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In this project, Intelligent Automation, Incorporated (IAI) and Oak Ridge National Lab (ORNL) propose a novel and integrated approach to inspect the mechanical dents and metal loss in pipelines. It combines the state-of-the-art SH wave Electromagnetic Acoustic Transducer (EMAT) technique, through detailed numerical modeling, data collection instrumentation, and advanced signal processing and pattern classifications, to detect and characterize mechanical defects in the underground pipeline transportation infrastructures. The technique has four components: (1) thorough guided wave modal analysis, (2) recently developed three-dimensional (3-D) Boundary Element Method (BEM) for best operational condition selection and defect feature extraction, (3) ultrasonic Shear Horizontal (SH) waves EMAT sensor design and data collection, and (4) advanced signal processing algorithm like a nonlinear split-spectrum filter, Principal Component Analysis (PCA) and Discriminant Analysis (DA) for signal-to-noise-ratio enhancement, crack signature extraction, and pattern classification. This technology not only can effectively address the problems with the existing methods, i.e., to detect the mechanical dents and metal loss in the pipelines consistently and reliably but also it is able to determine the defect shape and size to a certain extent.
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Author, Unknown. DTRS56-02-T-0002 Pipeline Inspection Technologies Demonstration Report. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0011928.

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The purpose of this assessment is to help identify promising inspection technologies best suited for further development as part of an integrated teaming effort between the robotic platform and sensor developers. This document is not intended to provide a detailed analysis of each technology's performance or to rate their performance relative to one another. Technologies discussed include: Shear Horizontal Electromagnetic Acoustic Transducer (EMAT) Remote Field Eddy Current (RFEC) Collapsible Remote Field Eddy Current (CRFEC) Nondestructive Ultrasonic Measurement Permanent Magnet Eddy Current Multi-purpose Deformation Sensor Dual Magnetization MFL Guided Wave Ultrasonics
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Nestleroth. L52298 Augmenting MFL Tools With Sensors that Assess Coating Condition. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010396.

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External coatings are routinely used to protect transmission pipelines from corrosion; however, coatings may degrade or disbond over time enabling corrosion to occur. Transmission pipeline operators often use magnetic flux leakage (MFL) in-line inspection tools to detect metal loss corrosion defects. Rather than finding the cause of a problem, failure of the coating within a corrosive environment, MFL corrosion surveys only find the result of the problem, corrosion defects that may permanently alter the pressure carrying capacity of the pipeline. Stress corrosion cracking (SCC) can be detected using in-line inspection (ILI) technology, but the availability of tools is limited and the cost of inspection is high compared to MFL inspection. SCC almost always occurs at coating faults; direct coating assessment could indicate future problems that could degrade the serviceability of the pipeline. In this project, a new sensor was developed to assess external coating that could work with currently available ILI tools for minimal additional cost to perform the inspection. The sensors, electromagnetic acoustic transducers (EMATs), generate ultrasonic waves that are guided by the pipe material around the circumference of the pipe. The coating material and adherence can influence the propagation of the ultrasonic waves; changes in ultrasonic signal features were attributed to coating faults. This development used modeling and experiments to establish a more optimal configuration for coating assessment. A multiple feature approach was used. A commonly used feature, signal amplitude, provided good sensitivity to coating condition but was influenced by inspection variables. One unique feature identified in this development is arrival time of the ultrasonic wave. For the wave type and frequency selected, the wave velocity was different for bare and coated pipe. Therefore, disbonded or missing coating can be detected by monitoring arrival time of the ultrasonic wave, a feature that is amplitude independent. Another feature for assessing coating, absorption of selective frequencies, was also demonstrated. Coating assessment capability was experimentally demonstrated using a prototype EMAT ILI tool. All three detection features were shown to perform well in an ILI environment as demonstrated at Battelle"s Pipeline Simulation Facility and BJ Inspection Services pull rigs. Improvement to the prototype occurred between each test; the most significant improvement was the design and construction of a novel set of thick-trace transmitting and receiving Printed Circuit Board (PCB) EMAT coils. Implementation variables such as moisture and soil loading were shown to have a minimal influence on results.
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