Relevant bibliographies by topics / Liquid sensing

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Liquid sensing'

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

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Journal articles on the topic "Liquid sensing"

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Ota, Hiroki. "(Invited) Stretchable Sensing Devices Combining Ionic Liquids and Soft Electrodes." ECS Meeting Abstracts MA2022-02, no. 36 (2022): 1321. http://dx.doi.org/10.1149/ma2022-02361321mtgabs.

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In recent years, a variety of ultra-flexible devices have been proposed. Their applications include wearable devices and soft robots. Among ultra-flexible devices, the devices with stretchablity is attracting attention as next-generation sensing devices. In such devices, ionic liquids can be used as a sensing material. Ionic liquids are polymers in a liquid state and their structure can be easily altered, For example, ionic liquids can be developed reactive to temperature, humidity, light, gases, and many other factors. Furthermore, since they are in a liquid state, they are durable against device stretching. In this study, we report on a stretchable sensing device using ionic liquids. In particular, by using liquid metal and CNT(Carbon nanotube) as electrode materials, we propose a super-stretchable device and a super-flexible device with transparency and high breathability. <Temperature/humidity/oxygen/optical sensors using liquid metal electrodes> liquid metal was used as electrode, and ionic liquids as a sensing material. Equivalent circuit of the sensors were established based on Nyquist plot The sensor showed stable sensitivity to temperature without hysteresis as shown with a 0.039/°C increase in conductivity, which is quite high compared to other reports. We also show proof of concept for humidity, oxygen gas, and optical sensings using four kinds of ionic liquids, 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIM][Otf]), 1-Butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]), 1-Butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([BMPYR][NTf2]) and 1-butyl-3-(4-phenylazobenzyl)imidazolium bis(trifluoromethanesulfonyl)amide ([Azo][NTf2]) for optical sensing. The sensitivity of each ionic liquid to humidity and oxygen differed depending on the ionic liquid. For each type of stimuli, the sensing can be optimized by choosing the proper ionic liquid. In addition, using [Azo][NTf2], we demonstrate optical sensing and memory in this study. < Transparent and Breathable Ion Gel-based Sensors using CNT> highly transparent, ultra-flexible, and gas-permeable polymer thin-film sensors using ion gels as the sensing material, which demonstrated the capacity for selective detections, were proposed. Particularly, simultaneous and independent sensing of temperature and humidity was demonstrated in this study. The sensors were fabricated using a simple spray coating method on a thin silicone rubber film (around 25 µm thickness). Owing to their thin-film shape, they showed more than 80% visible light transmittance and a higher gas permeability of 58.7 g/m2 h than the human transepidermal water loss. Simultaneous and independent detection of temperature and humidity was achieved with a high sensitivity of 15.9%/°C and 2.5%/percentage of relative humidity, respectively, using two types of gels with ionic liquids. These results suggest that the easily modifiable nature of ionic liquids contribute to the development of stretchable electronics.
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Liang, Yumeng, Anfu Zhou, Huanhuan Zhang, Xinzhe Wen, and Huadong Ma. "FG-LiquID." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 5, no. 3 (2021): 1–27. http://dx.doi.org/10.1145/3478075.

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Contact-less liquid identification via wireless sensing has diverse potential applications in our daily life, such as identifying alcohol content in liquids, distinguishing spoiled and fresh milk, and even detecting water contamination. Recent works have verified the feasibility of utilizing mmWave radar to perform coarse-grained material identification, e.g., discriminating liquid and carpet. However, they do not fully exploit the sensing limits of mmWave in terms of fine-grained material classification. In this paper, we propose FG-LiquID, an accurate and robust system for fine-grained liquid identification. To achieve the desired fine granularity, FG-LiquID first focuses on the small but informative region of the mmWave spectrum, so as to extract the most discriminative features of liquids. Then we design a novel neural network, which uncovers and leverages the hidden signal patterns across multiple antennas on mmWave sensors. In this way, FG-LiquID learns to calibrate signals and finally eliminate the adverse effect of location interference caused by minor displacement/rotation of the liquid container, which ensures robust identification towards daily usage scenarios. Extensive experimental results using a custom-build prototype demonstrate that FG-LiquID can accurately distinguish 30 different liquids with an average accuracy of 97%, under 5 different scenarios. More importantly, it can discriminate quite similar liquids, such as liquors with the difference of only 1% alcohol concentration by volume.
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Zhang, Boyu, and Zhijiao Chen. "A Simple AMC Antenna for Liquid Monitoring in an Infusion Bag." Sensors 25, no. 6 (2025): 1675. https://doi.org/10.3390/s25061675.

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Running-out detection of the liquids in an infusion bag is important for medical treatment. This paper proposed a simple low-cost sensing scheme with an artificial magnetic conductor (AMC) antenna for liquid-running-out detection in infusion bags. The proposed antenna consists of a dipole antenna supported by an AMC layer. It operates in the 2.4 GHz ISM band in the without-liquid state, in the 2.0 GHz ISM band in the with-liquid state, and can be used for liquid sensing. The AMC layer isolates interference from the surrounding environment such as the standing pole. It also enhances antenna performance and improves monitoring sensitivity. This gives a peak gain of 6.45 dBi and a radiation efficiency of 98% in the without-liquid state. Meanwhile, the with-liquid state can achieve a peak gain of 4.5 dBi and a radiation efficiency of 93%. The proposed antenna is fabricated and measured, verifying its sensing performance of the liquid in the infusion bag. This antenna’s design is flexible, compact, precise, and suitable for biomedical wireless sensing.
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Scanlon, Seth Thomas. "Liquid crystal immune sensing." Science 364, no. 6442 (2019): 747.5–748. http://dx.doi.org/10.1126/science.364.6442.747-e.

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Zeng, Hansong, and Yi Zhao. "Liquid-state motion sensing." Sensors and Actuators B: Chemical 154, no. 1 (2011): 33–40. http://dx.doi.org/10.1016/j.snb.2009.11.069.

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Herzog, Grégoire, Shane Flynn, and Damien W. M. Arrigan. "Macromolecular sensing at the liquid-liquid interface." Journal of Physics: Conference Series 307 (August 17, 2011): 012055. http://dx.doi.org/10.1088/1742-6596/307/1/012055.

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Fujikawa, Masaki, and Kenta Miyazaki. "Design and Evaluation of the Transparent Liquid Leakage Sensing Device." International Journal of Materials, Mechanics and Manufacturing 3, no. 4 (2015): 223–30. http://dx.doi.org/10.7763/ijmmm.2015.v3.201.

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B S, Nikhil Chandra, Roopa J, Harigovind A, and Ajay Bharadwaj. "A Review on Capacitive Liquid Level Sensing Techniques." Journal of University of Shanghai for Science and Technology 23, no. 06 (2021): 654–62. http://dx.doi.org/10.51201/jusst/21/05312.

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For contemporary communities, liquid-level management is of great significance. Liquid-level monitoring is utilized in a variety of industrial applications, including food processing, pharmaceutical manufacturing, chemical manufacturing, and water purification systems. Liquids are used in critical applications such as rocket fuel tanks, medical equipment, etc. These systems are prone to accidents caused by liquid leakages and liquid turbulence. Hence it is necessary to prevent such mishaps and save resources and additional costs which are incurred due to the same. This necessitates the design and development of liquid-level sensing systems that are used to detect and monitor the level of liquid. There are many techniques that can be used to sense the level of liquid-like mechanical floats, ultrasonic sensors, fibre optic cables, LASER systems, light dependant resistors, image processing, etc. Capacitive sensing has emerged as one of the booming technologies due to its simplistic design, responsiveness, accuracy, noise immunity, and easy deployment. It has evolved over time and is now a vital feature of a variety of products. This paper aims to review the existing capacitive sensing mechanisms and attempts to serve as a foundation for unexplored sensor geometries. A comparative analysis has been presented to assess the performance of the proposed techniques. Coplanar capacitive sensors are found to be effective over cylindrical capacitive sensors due to a decrease in size, simple design, and cost-effectiveness while maintaining the same accuracy, resolution and sensitivity.
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Ahmad, Shaheen, Ramin Khosravi, Ashwin K. Iyer, and Rashid Mirzavand. "Wireless Capacitive Liquid-Level Detection Sensor Based on Zero-Power RFID-Sensing Architecture." Sensors 23, no. 1 (2022): 209. http://dx.doi.org/10.3390/s23010209.

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In this paper, a new method for the wireless detection of liquid level is proposed by integrating a capacitive IDC-sensing element with a passive three-port RFID-sensing architecture. The sensing element transduces changes in the liquid level to corresponding fringe-capacitance variations, which alters the phase of the RFID backscattered signal. Variation in capacitance also changes the resonance magnitude of the sensing element, which is associated with a high phase transition. This change in the reactive phase is used as a sensing parameter by the RFID architecture for liquid-level detection. Practical measurements were conducted in a real-world scenario by placing the sensor at a distance of approximately 2 m (with a maximum range of about 7 m) from the RFID reader. The results show that the sensor node offers a high sensitivity of 2.15∘/mm to the liquid-level variation. Additionally, the sensor can be used within or outside the container for the accurate measurement of conductive- or non-conductive-type liquids due to the use of polyethylene coating on the sensitive element. The proposed sensor increases the reliability of the current level sensors by eliminating the internal power source as well as complex signal-processing circuits, and it offers real-time response, linearity, high sensitivity, and excellent repeatability, which are suitable for widespread deployment of sensor node applications.
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Pan, Zhihui, Ying Huang, and Hai Xiao. "Multi-Parameter Sensing Device to Detect Liquid Layers Using Long-Period Fiber Gratings." Sensors 18, no. 9 (2018): 3094. http://dx.doi.org/10.3390/s18093094.

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Insoluble liquids show layers such as water and oil. The detection of the exact interface locations and the level changes for layered liquids are of paramount importance for chemistry purifications, liquid storage in reservoirs, oil transportation, and chemical engineering. However, accurately measuring liquid layers is challenging. This paper introduces a multi-parameter sensing device based on a long-period fiber grating (LPFG) sensor simultaneously detecting boundary and level changes of layered liquids. Laboratory experiments demonstrated that the sensor device would respond to the liquid interface change as a sharp and sudden resonant wavelength change, while it would show a gradual and steady resonant wavelength change to the level changes of layered liquids. The lab experiments also showed that the sensor device has a higher sensitivity when a higher LPFG cladding mode is used.
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Dissertations / Theses on the topic "Liquid sensing"

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McIntosh, Alastair Jeffrey Scott. "Liquid-liquid interfaces for sensing applications." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/30830.

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A series of unfunctionalised and hydroxyl functionalised ionic liquids were synthesised with the aim of developing an ionic liquid based sensing platform. The electrochemical, and interfacial properties, were investigated and characterised to understand their use in a liquid-liquid, ITIES, platform. Electrochemical cells were designed and tested against model systems before the potential windows for the ionic liquid, ITIES, systems were measured. The potential windows were substantially wider than those previously reported. Initial agitation experiments with cytochrome-c showed promising results for the extraction and stabilisation, in the ionic liquids. However, protein ion transfer, under an applied potential, across the interface was not possible with any of the ionic liquids synthesised here. Capacitance results indicated, along with the cytochrome- c agglomeration, a charge build up or diffusion impedance at the interface. To investigate the reasons for this in greater depth pulse gradient stimulated echo NMR was undertaken and combined with fluorescence correlation spectroscopy. In the first reported monitoring, of the effect of an applied electric field on a probe in an ionic liquid by FCS, the results showed a marked 80 - 90 % decrease in diffusivity and an extremely slow relaxation time after the field was removed. After 600 seconds the diffusivity at the electrode surface was found to be unchanged, while the bulk diffusivity reduction had only reduced by 7 %. These results support the application of hole theory to ion diffusion within ionic liquids. Initial theoretical modelling to understand the ion dynamics at the interface provides intriguing evidence to support the development of theoretical tools to investigate interfacial ion dynamics, with what is believed to be the first reported use of a temporal split-step model based approach. This approach is approximately 10 - 20 times faster than previously reported methods.
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Lopes, Paula Cristina Dias. "Chiral interactions and sensing at liquid-liquid interface." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/5253/.

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Chiral interactions of compounds with therapeutic interest and its study predicting and interpreting transport process across biological barriers represents one of the most important topics in research. This thesis is devoted to the study of chiral ion transfer at the interface between two immiscible electrolytes solutions (ITIES), as a promising method of simplifying chiral detection and separation. As a proof of concept, for the study of chiral compounds at liquid|liquid interface, three different approaches were used: i) chiral stationary phases based on modified cyclodextrins, AcαCD and AcβCD, ii) chiral acute phase protein, α1-acid-glycoprotein (AGP) and iii) thick film electrode modified with an ethylated cyclodextrin ferrocene (EtCDFc). The chiral selectors used, AcαCD, AcβCD, AGP and EtCDFc display complex three-dimensional structures that are capable of recognising specifically the enantiomers of a drug molecule, with different affinity. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to investigate the enantioselective interaction between the chiral molecules. In the study of chiral ion transfer using AcαCD and AcβCD, as a chiral organic phase, it was observed that the two lipophilic CDs facilitated the transfer of ephedrine ions by the formation of inclusion complexes. The enantioselectivity was achieved as the complexes between the protonated ephedrine ions and the CDs lead two different signal responses as a result of different affinities in the complex formation. Furthermore, the positive enantiomer (+)EPH+ showed to be consistently the cation being transferred at less positive potentials suggesting that it binds preferentially with the chiral selectors, in comparison with (-)EPH+, indicating that its transfer is more facile. The difference in stability constant between the (+)EPH+ and (-)EPH+ complexes was found to be 1.41±0.1 for AcβCD and 1.20±0.1 for AcαCD. When investigating the chiral interactions between the AGP and the three basic drugs (propranolol, lidocaine and procaine hydrochloride), it was found, that the plasma protein binds to the protonated drugs with clear different affinities. The formation of a complex between the drugs and AGP was shown as a decrease in the CV and DPV responses, corresponding to the reduction in the transfer of the cationic drugs, as only the unbound (free) drug was able to be transferred across the liquid|liquid interface. The bound and unbound drug concentration was estimated in a different range of concentrations based on the responses obtained in the presence and absence of the protein. The differences in current responses, observable in the measurements, lead to chiral discrimination between R- and S-propranolol. Scatchard analysis was employed to calculate the association constant and the number of binding sites of the drugs with AGP. The calculated association constants were 2.7x105 M-1 for S- and 1.3x105 M-1 for R-propranolol, which were significantly higher than those for lidocaine, 1.2x104 M-1, and for procaine,8.4x103 M-1. This showed that AGP has more affinity for R- and S-propranolol than lidocaine or procaine hydrochloride. A thick film modified electrode with a chiral redox probe, ethylated ferrocene cyclodextrin (EtCDFc) was used to study chiral ion transfer across the liquid|liquid interface coupled to a redox reaction. EtCDFc has a dual role, a redox active moiety and a cyclodextrin moiety which is able to form chiral complexes. Thus, the redox reaction of EtCdF was accompanied by the complexation of mandelic acid enantiomers with the cyclodextrin part of EtCDFc, with the two reactions mutually influencing each other. In addition the thick film ensured that the generated product of the molecular probe was within the diffusion layer and away from the aqueous|organic solvent interface, so that the charge neutrality of the organic film was only maintained by the presence of ions from the aqueous phase.
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Taylor, R. M. "Optical sensing techniques for liquid level gauging." Thesis, University of Kent, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380619.

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Dallaire, François. "Electric sensing zone signal behaviour in liquid aluminium." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61133.

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Metal cleanliness is a major concern of today's aluminium industry. The metal cleanliness is related to the number and size of nonmetallic inclusions suspended in the liquid metal. A sensor, submerged in a liquid metal bath, produces a characteristic electrical signal during the passage of a particle through its Electric Sensing Zone (ESZ). On-line analysis of these signals enable melt particle size distribution to the derived. The present study focuses on signals obtained during application of such a sensor to aluminium melts.<br>Both the sensor and the preprocessing stages of the signal are described. A mathematical model of the high pass filtering transfer function is developed in the time domain to predict its role in modifying the raw signal's transient waveforms.<br>Classes of signal transients are identified and described in anticipation of further development based on pattern recognition techniques. Signal behaviour description in specific situations are performed through the relative occurrence rates of each class of transient. Attention is directed towards extraction of information relative to, both the production of particle size distribution as well as for sensor control purposes.
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Melin, Jessica. "Novel Microsystem Techniques for Liquid Manipulation and Pressure Sensing." Doctoral thesis, Stockholm : Department of Signals, Sensors and Systems, Royal Institute of Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-56.

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Kiwanuka, Ssegawa-Ssekintu. "Supercontinuum radiation for ultra-high sensitivity liquid-phase sensing." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245137.

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The real-time detection of trace species is key to a wide range of applications such as on-line chemical process analysis, medical diagnostics, identification of environmentally toxic species and atmospheric pollutant sensing. There is a growing demand for suitable techniques that are not only sensitive, but also simple to operate, fast and versatile. Most currently available techniques, such as spectrophotometry, are neither sensitive enough nor fast enough for kinetic studies, whilst other techniques are too complex to be operated by the non-specialist. This thesis presents two techniques that have been developed for and applied to liquid-phase analysis, with supercontinuum (SC) radiation used for liquid-phase absorption for the first time. Firstly, supercontinuum cavity enhanced absorption spectroscopy (SC-CEAS) was used for the kinetic measurement of chemical species in the liquid phase using a linear optical cavity. This technique is simple to implement, robust and achieves a sensitivity of 9.1 × 10−7 cm−1 Hz−1/2 at a wavelength of 550nm for dye species dissolved in water. SC-CEAS is not calibration-free and for this purpose a second technique, a time-resolved variant called broadband cavity ring-down spectroscopy (BB-CRDS), was successfully developed. Use of a novel single-photon avalanche diode (SPAD) array enabled the simultaneous detection of ring-down events at multiple spectral positions for BB-CRDS measurements. The performance of both techniques is demonstrated through a number of applications that included the monitoring of an oscillating (Belousov-Zhabotinsky) reaction, detection of commercially important photoluminescent metal complexes (europium(III)) at trace level concentration, and the analysis of biomedical species (whole and lysed blood) and proteins (amyloids). Absorption spectra covering the entire visible wavelength range can be acquired in fractions of a second using sample volumes measuring only 1.0mL. Most alternative devices capable of achieving similar sensitivity have, up until now, been restricted to single wavelength measurements. This has limited speed and number of species that can be measured at once. The work presented here exemplifies the potential of these techniques as analytical tools for research scientists, healthcare practitioners and process engineers alike.
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Bera, Tanmay. "Developing surface engineered liquid crystal droplets for sensing applications." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5125.

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Diagnosis plays a very crucial role in medicine and health care, which makes biosensors extremely important in modern technological context. Till date, various types of biosensors have been developed that are capable of detecting a wide range of biologically important species with great sensitivity and selectivity. However, most of these sensing units require highly sophisticated instrumentation and often lack the desired portability. Liquid crystal (LC) droplets, on the other hand, are a new type of functional material that are finding increasing research attention as a new sensing unit due to their tunable optical property, high surface area, portability and cost-effectiveness. In this dissertation, functionalized LC droplets for biosensing at aqueous-LC interface are highlighted. Chemically functionalized LC droplets dispersed in aqueous solution were prepared by the self-assembly of amphiphilic molecules at the aqueous/LC interface. These functionalized LC droplets showed a well-defined director of configuration and a specific optical pattern when observed with a polarizing light microscope. It was discovered that the interaction of chemically functionalized LC droplets with an analyte triggers transition of the director of configuration of the LC within the droplets, providing a simple and unique optical sign for the detection of the analyte. Moreover, the director of configuration transition happened in a concentration dependent manner, allowing both qualitative and quantitative detection of the analyte. The sensitivity of chemically functionalized LC droplets depends not only on the nature of amphiphilic molecules but also the size and number of the droplets. The dissertation essentially deals with the application of these chemically functionalized LC droplets in detecting several biologically important species. It was observed that the adsorption of charged macromolecules (dendrimers, proteins, and viruses) on polyelectrolyte functionalized LC droplets triggered a bipolar-to-radial configuration transition based on the polar verses non-polar interaction. By using a simple optical microscope, microgram per milliliter concentrations of bovine serum albumin, cowpea mosaic virus, and tobacco mosaic virus could be detected in aqueous solution. The detection limit of Mastoparan X polypeptide decorated LC droplets in detecting E. coli could reach to approximately 10 bacteria per milliliter. In this case, the high affinity of the polypeptide towards the bacterial causes the former to detach from the LC droplets, triggering the director of configuration transition of the LC inside the droplets. Finally, surfactant decorated LC droplets were used to detect lithocholic acid (LCA), a toxic bile acid used as a specific biomarker for colon cancers. In this case, the director of configuration transition of the LC inside the droplets is a result of the replacement of the surfactant from the aqueous/LC interface by LCA. The microgram per milliliter concentration of LCA, a clinically significant concentration, could be easily detected by changing the length of surfactants. These studies highlight the novel use of surface functionalized LC droplets to detect biologically important species. Due to their tunable optical property, coupled with high surface area and portability, surface functionalized LC droplets have great potentials in the design of next generation biosensors.<br>ID: 031001378; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Adviser: .; Title from PDF title page (viewed May 21, 2013).; Thesis (Ph.D.)--University of Central Florida, 2012.; Includes bibliographical references (p. 119-134).<br>Ph.D.<br>Doctorate<br>Materials Science Engineering<br>Engineering and Computer Science<br>Materials Science and Engineering
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Said, Hussein. "Wavefront sensing using nematic liquid crystal spatial light modulators." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614197.

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DIAZ, C. A. R. "Optical Fiber Sensing for SubMillimeter IntrinsicallySafe Liquid Level Monitoring." Universidade Federal do Espírito Santo, 2018. http://repositorio.ufes.br/handle/10/10178.

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Made available in DSpace on 2018-08-23T22:06:02Z (GMT). No. of bitstreams: 1 tese_8266_Thesis_Final Camilo.pdf: 34209018 bytes, checksum: f8bbb0b51ae8a11a48c4546685b529d0 (MD5) Previous issue date: 2018-06-06<br>The popularization and fast growth of the optical fiber sensing technology has stimulated in different fields WHERE measurements of diverse physical and chemical parameters are required. Among these parameters, liquid level sensing plays an essential role in industry applications such as chemical processing, fuel storage, transportation systems, oil tanks/reservoirs, and wastewater treatment plants. In order to measure this parameter different sensing techniques based on acoustical, mechanical, electrical and electromagnetical technologies have been already proposed. Nevertheless, they suffer from intrinsic safety concerns in harsh environments, especially with corrosive, and explosive or flammable atmospheres. Fiber optic based liquid level sensors (FOLLS) can work in harsh environments with inherent advantageous features that only optical fiber offers, such as intrinsic safety, resistance to chemical corrosion, immunity to electromagnetic interference, electric isolation, small size, lightweight sensing heads, high accuracy and resolution, easy multiplexing, and capability for extremely remote monitoring without the need of electrical power at the measuring point. In this context, this doctoral Thesis presents two specific optical fiber sensor technologies to measure liquid level. Both the MachZehnder and FabryPerot interferometers are researched. The Thesis also focus on uniform fiber Bragg grating (FBG). Since these technologies have different operation principle, the liquid level measurement was based on refractive index changes for the MachZehnder sensor and based on hydrostatic pressure in the case of both the FPI and FBG sensors. Furthermore, analysis of temperature crosssensitivity is performed with the aim to improve the pressurebased sensors performance. Despite the FBGs provide high accurate measurements, the interrogation systems are the most important drawback for their large commercial application, due to their high cost. Therefore, a new and lower cost interrogation technique based on FPI microcavities was proposed as a final contribution.
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Rai, Kashma K. Fontecchio Adam. "Study of spectral sensing using electro-optic films /." Philadelphia, Pa. : Drexel University, 2010. http://hdl.handle.net/1860/3274.

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Books on the topic "Liquid sensing"

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Foukal, Peter. Interim report to the National Aeronautics and Space Administration, Marshall Space Flight Center on Wavelength-tunable liquid crystal imaging filters for remote sensing from geosynchronous platforms. National Aeronautics and Space Administration, 1992.

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1920-, McDonald Bill L., Hughes Rose M, and Geological Survey (U.S.), eds. Results of qualification tests on water-level sensing instruments. U.S. Dept. of the Interior, Geological Survey, 1985.

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1920-, McDonald Bill L., Hughes Rose M, Geological Survey (U.S.), and National Space Technology Laboratories (U.S.), eds. Results of qualification tests on water-level sensing instruments, 1984-85. U.S. Dept. of the Interior, Geological Survey, 1985.

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Kosnoski, Jason. Sensing the public: The art of political organizing in a liquid world. Lexington Books, 2010.

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Hooker, Stanford B. An investigation into HPLC data quality problems. National Aeronautics and Space Administration, Goddard Space Flight Center, 2011.

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Pazmany, Andrew L. Millimeter-wave radar field measurements and inversion of cloud parameters for the 1999 Mt. Washington Icing Sensors Project: [final report]. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Center, NASA Glenn Research, ed. Millimeter-wave radar field measurements and inversion of cloud parameters for the 1999 Mt. Washington Icing Sensors Project: [final report]. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Center, NASA Glenn Research, ed. Millimeter-wave radar field measurements and inversion of cloud parameters for the 1999 Mt. Washington Icing Sensors Project: [final report]. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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A, Kropfli Robert, and Wave Propagation Laboratory, eds. Remote sensing techniques of the Wave Propagation Laboratory for the measurement of supercooled liquid water: Applications to aircraft icing. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Wave Propagation Laboratory, 1989.

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America, Optical Society of, ed. Modern spectroscopy of solids, liquids, and gases: Summaries of papers presented at the topical meeting, Modern spectroscopy of solids, liquids and gases : February 9-11, 1995, Santa Fe, New Mexico. Optical Society of America, 1995.

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Book chapters on the topic "Liquid sensing"

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Weng, Fuzhong. "Cloud Liquid Water." In Encyclopedia of Remote Sensing. Springer New York, 2014. http://dx.doi.org/10.1007/978-0-387-36699-9_18.

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Wolinski, Tomasz. "Photonic Liquid Crystal Fiber Sensors for Safety and Security Monitoring." In Photonic Sensing. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118310212.ch5.

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Wang, Ling, Karla G. Gutierrez-Cuevas, and Quan Li. "Photochromic Chiral Liquid Crystals for Light Sensing." In Liquid Crystal Sensors. CRC Press, 2017. http://dx.doi.org/10.1201/9781315120539-2.

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Yang, Kun-Lin. "Liquid Crystals in Microfluidic Devices for Sensing Applications." In Liquid Crystal Sensors. CRC Press, 2017. http://dx.doi.org/10.1201/9781315120539-7.

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Arnold, Thomas, Tibor Bereczki, Dominik Holzmann, et al. "Development of a Compact IR-ATR Sensor for Sugar Content Measurement in Liquid Foods." In Sensing Technology. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-29871-4_12.

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Yang, Kun-Lin. "Liquid Crystals in Microfluidic Devices for Sensing Applications." In Liquid Crystals Book Series. CRC Press, 2017. http://dx.doi.org/10.1201/9781315120539-8.

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Cataldo, Andrea, Egidio De Benedetto, and Giuseppe Cannazza. "Reflectometry for Liquid-Level Monitoring." In Advances in Reflectometric Sensing for Industrial Applications. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-031-79497-1_4.

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Islam, Mohammad Tariqul, and Md Rashedul Islam. "Liquid and Solid Material Sensing Using Metamaterial." In Metamaterial for Microwave Applications. CRC Press, 2023. http://dx.doi.org/10.1201/9781003358152-2.

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Marques-Lucena, C., J. Ferreira, M. Sesana, K. Fisher, and C. Agostinho. "Process Modelling Approach for the Liquid-Sensing Enterprise." In Enterprise Interoperability VII. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30957-6_17.

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Cern, E. James, B. Boro Djordjevic, and David M. Barnett. "Ultrasonic Method for Nonintrusive Low-Liquid-Level Sensing." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0817-1_131.

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Conference papers on the topic "Liquid sensing"

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Galstian, Tigran. "Enhanced polarization sensing with liquid crystals." In Label-free Biomedical Imaging and Sensing (LBIS) 2025, edited by Natan T. Shaked and Oliver Hayden. SPIE, 2025. https://doi.org/10.1117/12.3049835.

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Bakar, Aslina Abu, Amirudin Ibrahim, Aiza Mahyuni Mozi, Najwa Mohd Faudzi, Ahmad Rashidy Razali, and Nur Hidayah Abu Bakar. "Slotted Antenna Based Sensor for Liquid Sensing." In 2024 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE). IEEE, 2024. https://doi.org/10.1109/apace62360.2024.10877340.

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Abbasian, Vahid, Vahideh Farzam Rad, Arash Darafsheh, and Humberto Cabrera. "Liquid flow sensing through dynamic laser speckle analysis." In Biomedical Light Scattering XV, edited by Adam Wax and Vadim Backman. SPIE, 2025. https://doi.org/10.1117/12.3038607.

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Sasaki, Takeo, Takaaki Yagami, Toshinobu Takashi, et al. "Photorefractive effect of smectic liquid crystals and their application to laser ultrasonic remote sensing." In Liquid Crystals XXVI, edited by Iam Choon Khoo. SPIE, 2022. http://dx.doi.org/10.1117/12.2633374.

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Ito, Ryota, Michinori Honma, and Toshiaki Nose. "Improved terahertz phase sensing by using liquid crystal phase shifter." In Emerging Liquid Crystal Technologies XV, edited by Liang-Chy Chien and Dirk J. Broer. SPIE, 2020. http://dx.doi.org/10.1117/12.2543039.

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Pathak, Biswajit, Waqas Kamal, Steve J. Elston, Alfonso A. Castrejón-Pita, Martin J. Booth, and Stephen M. Morris. "Shack–Hartmann wavefront sensing using printed liquid crystal microlens arrays." In Emerging Liquid Crystal Technologies XIX, edited by Jun Yamamoto, Liang-Chy Chien, and Nelson V. Tabiryan. SPIE, 2024. http://dx.doi.org/10.1117/12.3007745.

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Hochbaum, Aharon, James L. Fergason, and Jesse D. Buck. "Optical limiting with liquid-crystal materials." In Aerospace Sensing, edited by M. J. Soileau. SPIE, 1992. http://dx.doi.org/10.1117/12.138052.

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Khoo, Iam-Choon, and S. H. Lee. "Broadband liquid-crystal electro-optical modulators." In Aerospace Sensing, edited by M. J. Soileau. SPIE, 1992. http://dx.doi.org/10.1117/12.138056.

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Cotariu, Steven S., Stanley E. Monroe, Jr., and Jerome Knopp. "Live-input live-filter liquid-crystal correlator." In Aerospace Sensing, edited by Dennis R. Pape. SPIE, 1992. http://dx.doi.org/10.1117/12.139897.

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Staromlynska, Jacqueline. "Liquid-crystal electro-optic and nonlinear optical devices." In Aerospace Sensing, edited by M. J. Soileau. SPIE, 1992. http://dx.doi.org/10.1117/12.138055.

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Reports on the topic "Liquid sensing"

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Allen, S. J. Potential for Terahertz/Optical, Two Color Non-linear Sensing of Liquid Biochemical Agents. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada545156.

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Siebenaler, Shane. PR-015-093709-R01 Evaluation of External Leak Detection Systems - Laboratory Work. Pipeline Research Council International, Inc. (PRCI), 2011. http://dx.doi.org/10.55274/r0010445.

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A previous PRCI project (PR-015-084510, 2009) identified distributed temperature sensing (DTS) and acoustic emissions as potentially viable technologies for the detection of small leaks in liquid pipelines. Much of the assessment that led to this conclusion was based upon manufacturer-generated literature. However, there is a lack of existing, publicly-available test data on these technologies as they relate to detecting small leaks in liquid pipelines. Such data are needed by pipeline operators in order to determine the value in supplementing their existing leak detection systems with one of these technologies. The long-term goal of the PRCI team providing oversight to this work is to conduct full-scale field testing of these technologies. However, it is first important to determine the parameters that affect performance in order to design the large-scale testing and to identify conditions for which the technologies are not suitable. A project encompassing analysis and laboratory testing of DTS systems and modeling of acoustic emissions systems was conducted. Includes some analysis of different liquids including crude oil, propane, gasoline, and carbon dioxide.
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Shimabukuro, Fred I. A Method for Remote Sensing of Precipitable Water Vapor and Liquid in the Atmosphere Using a 22-GHz Radiometer. Defense Technical Information Center, 1987. http://dx.doi.org/10.21236/ada184204.

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Vanderkooy and McAlary. PR-445-133727-R01 Vapor Plume Detection - Report Compilation and Summary. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010835.

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Detecting small leaks of liquid hydrocarbons from underground pipelines is difficult using currently available techniques. Hundreds of thousands of miles of aging pipelines run through North America alone and the incidence of small leaks is expected to increase as time goes on. This research was aimed at evaluating two alternative methods for leak detection: 1) monitoring petroleum hydrocarbon (PHC) vapors at or above ground surface over the leaked product, or 2) using plants as visual sensors to indicate the presence of a leak below. Four reports were generated, including: 1) mathematical modeling of subsurface vapor transport and atmospheric dispersion, 2) comparison of the model simulations to empirical data, 3) a review of available portable sensing technologies to detect PHC vapors, and 4) a review of mechanisms and species of plants that could be used as pipeline leak sensors.
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He, Rui, Na (Luna) Lu, and Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

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As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, concrete samples are usually cured in saturated lime water or a curing room with a relative humidity (RH) value higher than 95%. Thus, the effectiveness of curing compounds for field concrete needs to be studied. In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for w/c determination of plastic concrete and curing effectiveness evaluation method for hardened concrete.
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