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Journal articles on the topic 'Liquid resonators'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Mironov, Mikhail. "The Dipole Resonator and Dipole Waveguide Insulator in Dense Liquid Medium." Acoustics 4, no. 2 (2022): 469–78. http://dx.doi.org/10.3390/acoustics4020029.

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In this paper, the propagation of sound in an acoustically narrow waveguide, the wall of which is lined with identical dipole resonators and masses on springs, is theoretically considered. It is shown that, in the frequency range above the resonant frequency of the resonators, sound waves exponentially attenuate, and the waveguide is locked. The width of this range depends on two parameters—the ratio of the cross-sectional areas of the resonators and the waveguide and the ratio of the mass of the resonator to the mass of the medium displaced by it. As the resonator mass decreases, the locking

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Kapoor, Mahima, K. S. Daya, and G. S. Tyagi. "Coupled ring resonator for microwave characterization of dielectric materials." International Journal of Microwave and Wireless Technologies 4, no. 2 (2012): 241–46. http://dx.doi.org/10.1017/s1759078711001103.

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In this paper characterization of dielectric materials in liquid and powder phase using concentric closed and split ring resonators of length λ, λ/2, and λ/4 is reported. Experimental results have been validated by simulations and theoretically modeling. Sensitivity of the resonator with closed rings was maximum. Experimentally extracted values of dielectric constant of ferrite ranged from 14.05 to 15.1 with closed ring resonators and from 13.6 to 14.02 with split ring resonator, respectively. For spirulina platensis the dielectric constant was lying in the range 1.78–1.93 and 1.74–2.04 with c

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3

Aleksandrov V. A. "Generation of surface liquid flow in channels by capillary vibrations and waves." Technical Physics 92, no. 2 (2022): 162. http://dx.doi.org/10.21883/tp.2022.02.52942.158-21.

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The generation of a directed flow on the water surface in channels with sources and resonators of capillary oscillations is detected and investigated. The surface flow is caused by the movement of the liquid through the gaps between the resonators, as well as between the resonator and the channel walls, under a curved surface that is locally deformed by the sources of capillary vibrations, the transfer of energy of the locally curved surface of the liquid by capillary waves, and the transmission of wave momentum to the particles of the liquid surface in one direction. It is shown that capillar

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Александров, В. А. "Генерация поверхностного потока жидкости в каналах капиллярными колебаниями и волнами". Журнал технической физики 92, № 2 (2022): 194. http://dx.doi.org/10.21883/jtf.2022.02.52008.158-21.

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The generation of a directed flow on the water surface in channels with sources and resonators of capillary oscillations is detected and investigated. The surface flow is caused by the movement of the liquid through the gaps between the resonators, as well as between the resonator and the channel walls, under a curved surface that is locally deformed by the sources of capillary vibrations, the transfer of energy of the locally curved surface of the liquid by capillary waves, and the transmission of wave momentum to the particles of the liquid surface in one direction. It is shown that capillar

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Yasin, Azhar, Nayab Gogosh, Syed Irfan Sohail, Syed Muzahir Abbas, Muhammad Farhan Shafique, and Abdelhady Mahmoud. "Relative Permittivity Measurement of Microliter Volume Liquid Samples through Microwave Filters." Sensors 23, no. 6 (2023): 2884. http://dx.doi.org/10.3390/s23062884.

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This paper proposes a concept of dielectric characterization of low-volume liquid samples using the coupling coefficient of filters. The concept is validated through a two-pole substrate integrated waveguide filter in which the liquid under test is mounted on the coupling section between the two resonators. Unlike the conventional resonator perturbation method reported many times in the literature, this technique uses the coupling coefficient for sensing. The liquid sample is collected in a capillary tube and carefully positioned on the coupling section of the filter; the coupling coefficient

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Missaoui, S., and M. Kaddour. "Liquid Crystal-Based Reconfigurable Tunable Filter with DBR Topology." ISRN Materials Science 2011 (October 31, 2011): 1–5. http://dx.doi.org/10.5402/2011/784615.

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The use of liquid crystals for tunable filter in planar technology is proposed. The design is based on a dual-behavior resonator (DBR) topology. These resonators are based on the association of different parallel open-ended stubs and allow the designer to independently control the in-band and out-of-band responses of the filter. To benefit from liquid crystal anisotropy and thus obtain agility, a bias voltage is applied. The simulated results are compared with measured data, and good agreement is obtained.

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7

Li, Zhongjun, Shuang Tian, Jiaxin Tang, Weichao Yang, Tao Hong, and Huacheng Zhu. "High-Sensitivity Differential Sensor for Characterizing Complex Permittivity of Liquids Based on LC Resonators." Sensors 24, no. 15 (2024): 4877. http://dx.doi.org/10.3390/s24154877.

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This paper proposes a high-sensitivity microstrip differential sensor for measuring the complex permittivity of liquids. The prototype of the differential sensor was formed by cascading two LC resonators on a microstrip transmission line based on stepped impedance. A strong electric field was found to be distributed in the circular patch of the LC resonator; therefore, a cylindrical micropore was set in the center of the circular LC resonator to measure the dielectric sample, which maximized the disturbance of the dielectric sample on the sensor. By optimizing the size of the circular LC reson

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Huseynov, T. K., T. T. Gadirova, B. K. Amiraslanov, N. A. Abdulova, A. I. Quliyeva, and K. R. Haciyeva. "Theoretical and experimental study of vibration-amplitude liquid densimeter on the basis of a high-quality tubular resonator." E3S Web of Conferences 124 (2019): 03004. http://dx.doi.org/10.1051/e3sconf/201912403004.

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This paper is devoted to the current model of vibration-amplitude liquid densimeter developed by the authors. Firstly, the necessity to develop vibration-amplitude liquids densimeters with straigt-flow sensing elements (resonators) belonging to the “low cost low accuracy” category is justified. The resonator structure, developed as the result of the search using the heuristic method, is described. The proposed resonator is a tube rigidly fixed at the ends with additional weights attached symmetrically at the vertical axis at the points of the antinodes of the second fundamental oscillation mod

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9

Martín-Pérez, Ramos, Tamayo, and Calleja. "Coherent Optical Transduction of Suspended Microcapillary Resonators for Multi-Parameter Sensing Applications." Sensors 19, no. 23 (2019): 5069. http://dx.doi.org/10.3390/s19235069.

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Characterization of micro and nanoparticle mass has become increasingly relevant in a wide range of fields, from materials science to drug development. The real-time analysis of complex mixtures in liquids demands very high mass sensitivity and high throughput. One of the most promising approaches for real-time measurements in liquid, with an excellent mass sensitivity, is the use of suspended microchannel resonators, where a carrier liquid containing the analytes flows through a nanomechanical resonator while tracking its resonance frequency shift. To this end, an extremely sensitive mechanic

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Shaimerdenova, Madina, Takhmina Ayupova, Marzhan Sypabekova, and Daniele Tosi. "Fiber Optic Refractive Index Sensors Based on a Ball Resonator and Optical Backscatter Interrogation." Sensors 20, no. 21 (2020): 6199. http://dx.doi.org/10.3390/s20216199.

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In this work, we introduced fabrication and interrogation of simple and highly sensitive fiber-optic refractive index (RI) sensors based on ball resonators built on the tip of single-mode fibers. The probes have been fabricated through a CO2 fiber splicer, with a fast (~600 s) and repeatable method. The ball resonator acted as a weak interferometer with a return loss below −50 dB and was interrogated with an optical backscatter reflectometer measuring the reflection spectrum. The ball resonators behaved as weak interferometers with a shallow fringe and a spectrum that appeared close to a rando

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11

Semyonov, Alexander, Boris Zaitsev, Andrey Teplykh, and Irina Borodina. "The Effect of Glycerol-Based Suspensions on the Characteristics of Resonators Excited by a Longitudinal Electric Field." Sensors 23, no. 2 (2023): 608. http://dx.doi.org/10.3390/s23020608.

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This study examines the effect of suspensions based on pure glycerol and diamond powder with different concentrations on the characteristics of resonators with a longitudinal electric field. We used two disk resonators made of the quartz and langasite plates with round electrodes on both sides of the plate and resonant frequencies of 4.4 and 4.1 MHz, operating in shear and longitudinal acoustic modes, respectively. Each resonator was mounted on the bottom of a 30 mL liquid container. During the experiments, the container was filled with the suspension under study in such a way that the resonat

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12

Choi, Jin-Young, Jun-Seok Ma, and Wook-Sung Kim. "Reconfigurable Wideband Bandpass Filter Using Stepped Impedance Resonator Based on Liquid Crystals." Electronics 14, no. 12 (2025): 2325. https://doi.org/10.3390/electronics14122325.

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In this paper, a capacitively coupled-fed reconfigurable wideband bandpass filter (BPF) is proposed based on liquid crystal (LC) technology, which achieved three transmission poles across varying bias voltages (VB). An open-ended stepped impedance resonator configuration enables multi-mode resonance, offering significantly wider bandwidth compared to uniform-impedance resonators. The fractional bandwidth (FBW) and transmission pole positions are determined by the impedance ratio of the two resonators, allowing the filter to meet specific design requirements. An analytical methodology employing

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13

Giorgini, Antonio, Saverio Avino, Pietro Malara, Paolo De Natale, and Gianluca Gagliardi. "Liquid Droplet Microresonators." Sensors 19, no. 3 (2019): 473. http://dx.doi.org/10.3390/s19030473.

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We provide here an overview of passive optical micro-cavities made of droplets in the liquid phase. We focus on resonators that are naturally created and suspended under gravity thanks to interfacial forces, illustrating simple ways to excite whispering-gallery modes in various slow-evaporation liquids using free-space optics. Similar to solid resonators, frequency locking of near-infrared and visible lasers to resonant modes is performed exploiting either phase-sensitive detection of the leakage cavity field or multiple interference between whispering-gallery modes in the scattered light. As

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14

Zhou, Yu, Yang Zou, Chao Gao, et al. "Investigation of film bulk acoustic resonators for sensing applications in liquid environment." Applied Physics Letters 121, no. 21 (2022): 213501. http://dx.doi.org/10.1063/5.0124829.

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The thin film bulk acoustic resonator (FBAR) has emerged as a promising choice for liquid sensors because of its high frequency and sensitivity. To investigate the potential of FBAR devices working as the liquid sensors, we study the operating law of FBAR in liquid environments and explore the different loading effects of liquid on the shear mode and longitudinal mode. By analyzing the device and liquid interactions, we modify the Mason model of FBAR in the liquid environment. Subsequently, the influence of the piezoelectric film with different tilt angles and liquids on the characteristics of

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15

Reyes-Vera, Erick, G. Acevedo-Osorio, Mauricio Arias-Correa, and David E. Senior. "A Submersible Printed Sensor Based on a Monopole-Coupled Split Ring Resonator for Permittivity Characterization." Sensors 19, no. 8 (2019): 1936. http://dx.doi.org/10.3390/s19081936.

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This work presents a non-invasive, reusable and submersible permittivity sensor that uses a microwave technique for the dielectric characterization of liquid materials. The proposed device consists of a compact split ring resonator excited by two integrated monopole antennas. The sensing principle is based on the notch introduced by the resonators in the transmission coefficient, which is affected due to the introduction of the sensor in a new liquid material. Then, a frequency shift of the notch and the Q-factor of the proposed sensor are related with the changes in the surrounding medium. By

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16

Kirihara, Soshu, Noritoshi Ohta, Toshiki Niki, and Satoko Tasaki. "Fabrications of Terahertz Wave Resonators in Micro Liquid Cells Introduced into Alumina Photonic Crystals with Diamond Structures." ISRN Materials Science 2011 (July 3, 2011): 1–8. http://dx.doi.org/10.5402/2011/897235.

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Terahertz wave resonators composed of three-dimensional photonic crystals composed of alumina lattices with diamond structures were designed and fabricated by using microstereolithography process. These three dimensional periodic structures of ceramics can reflect perfectly the terahertz waves through Bragg diffraction. A micro glass cell including water solvents was put between two photonic crystals to realize multiple resonations of terahertz waves to synchronize with various vibration modes of saccharide or protein molecules and control biochemical reactions through electromagnetic excitati

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17

Meyne, Nora, and Arne F. Jacob. "Sectorial substrate-integrated half-mode near-field sensors for biological liquid characterization." International Journal of Microwave and Wireless Technologies 6, no. 3-4 (2014): 305–12. http://dx.doi.org/10.1017/s1759078714000385.

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Two compact resonant near-field sensors are introduced for the characterization of aqueous solutions at 5 GHz. They are based on folded substrate-integrate circular half-mode resonators with a planar sensing tip. Owing to the planar design, the sensor is simple and cheap to manufacture, and a sample can be easily coupled to the resonator from the top. The operating principle of the sensor is explained and verified by both simulation and measurement. The radiation of the sensors is quantified by means of a quality factor analysis. Finally, a previously introduced calibration method based on the

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18

Lee, Jungchul, and Juhee Ko. "(Invited) Hyper-Multimodal Sensing with Heater-Integrated Fluidic Resonators." ECS Meeting Abstracts MA2024-02, no. 64 (2024): 4304. https://doi.org/10.1149/ma2024-02644304mtgabs.

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Mechanical resonators with embedded fluidic channels (hereafter referred to as fluidic resonators), known as suspended micro/nanochannel resonators (SMRs or SNRs) [1, 2], allow precise and sensitive measurements of single micro/nanoparticles or single cells in transit, adsorbed biomolecules and liquid analytes. To date, the majority of studies using fluidic resonators have been performed at a fixed steady-state temperature close to room temperature, since temperature modulation inevitably changes the resonance frequency of the fluidic resonators, one of the key measurement variables. To mainta

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19

Nur, Shahira Mat Hussain, Natasha Azman Azahani, Abu Talip Yusof Nurhafizah, Alia Athirah Hj Mohtadzar Nur, and Shaiful Abdul Karim Mohamad. "Design of resonator cavity for liquid material characterization." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 20, no. 2 (2022): 447–54. https://doi.org/10.12928/TELKOMNIKA.v20i2.23158.

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Dielectric characterization is very essential before the material can be utilized in designing microwave networks. Circular cylindrical resonators have been widely used for material characterization, but it is not a preferable design during the measurement of liquid samples as the sample placement requires repetitive process of opening and closing the lid of the cavity. This repetition procedure easily affects the accuracy of measurement and may lead to a measurement error. In this study, a rapid and less measurement procedure of liquid material characterization is proposed. The proposed recta

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20

Abu Bakar, Habshah, Rosemizi Abd Rahim, Ping Jack Soh, and Prayoot Akkaraekthalin. "Liquid-Based Reconfigurable Antenna Technology: Recent Developments, Challenges and Future." Sensors 21, no. 3 (2021): 827. http://dx.doi.org/10.3390/s21030827.

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Advances in reconfigurable liquid-based reconfigurable antennas are enabling new possibilities to fulfil the requirements of more advanced wireless communication systems. In this review, a comparative analysis of various state-of-the-art concepts and techniques for designing reconfigurable antennas using liquid is presented. First, the electrical properties of different liquids at room temperature commonly used in reconfigurable antennas are identified. This is followed by a discussion of various liquid actuation techniques in enabling high frequency reconfigurability. Next, the liquid-based r

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21

Liu, H. L., Y. F. Zuo, X. Q. Zhu, and Y. Yang. "Optofluidic gradient refractive index resonators using liquid diffusion for tunable unidirectional emission." Lab on a Chip 20, no. 15 (2020): 2656–62. http://dx.doi.org/10.1039/d0lc00395f.

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Barrios, C. A., M. Holgado, O. Guarneros, et al. "Reconfiguration of microring resonators by liquid adhesion." Applied Physics Letters 93, no. 20 (2008): 203114. http://dx.doi.org/10.1063/1.3033528.

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23

Foreman, M. R., S. Avino, R. Zullo, H. P. Loock, F. Vollmer, and G. Gagliardi. "Enhanced nanoparticle detection with liquid droplet resonators." European Physical Journal Special Topics 223, no. 10 (2014): 1971–88. http://dx.doi.org/10.1140/epjst/e2014-02240-9.

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ANAGHA, KUNTE, and ARUN GAIKWAD DR. "EXPERIMENTAL INVESTIGATION OF PLANAR MICROSTRIP RESONATOR FOR PERMITTIVITY MEASUREMENT." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 7 (2017): 17–21. https://doi.org/10.5281/zenodo.1458996.

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<strong>Characterization of dielectric material can be done by the nondestructive method of microstrip straight resonator and microstrip ring resonator sensor. To determine dielectric constant and loss tangent of solid,liquid and paste proposed measurement method is based on transmission line modeling (TLM) method in Time Domain. Dielectric constant is very much sensitive to variations in dimensions of microstrip planar structure. Straight and Ring resonators are fabricated with Glass Epoxy and RT Duroid substrate. Experimental work is carried out by measuring resonant frequency and return los

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Al-Gburi, Ahmed Jamal Abdullah, Zahriladha Zakaria, Norhanani Abd Rahman, et al. "A Miniaturized and Highly Sensitive Microwave Sensor Based on CSRR for Characterization of Liquid Materials." Materials 16, no. 9 (2023): 3416. http://dx.doi.org/10.3390/ma16093416.

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In this work, a miniaturized and highly sensitive microwave sensor based on a complementary split-ring resonator (CSRR) is proposed for the detection of liquid materials. The modeled sensor was designed based on the CSRR structure with triple rings (TRs) and a curve feed for improved measurement sensitivity. The designed sensor oscillates at a single frequency of 2.5 GHz, which is simulated using an Ansys HFSS simulator. The electromagnetic simulation explains the basis of the mode resonance of all two-port resonators. Five variations of the liquid media under tests (MUTs) are simulated and me

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Paul, Robert B., A. Ege Engin, and Jerry Aguirre. "Flip Chip Underfill RF Characterization." International Symposium on Microelectronics 2019, no. 1 (2019): 000243–47. http://dx.doi.org/10.4071/2380-4505-2019.1.000243.

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Abstract To develop reliable high-speed packages, characterization of the underfill material used in the flip-chip process has become of greater importance. The underfill, typically an epoxy resin-based material, offers thermal and structural benefits for the integrated circuit (IC) on package. With so many inputs and outputs (IOs) in close proximity to one another, the integrated circuits on package can have unexpected signal and power integrity issues. Furthermore, chip packages can support signals only up to the frequency where noise coupling (e.g., crosstalk, switching noise, etc.) leads t

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27

Voinova, M. V. "Modelling of the response of acoustic piezoelectric resonators in biosensor applications – Part 1: The general theoretical analysis." Journal of Sensors and Sensor Systems 4, no. 1 (2015): 137–42. http://dx.doi.org/10.5194/jsss-4-137-2015.

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Abstract. Acoustic piezoelectric resonators are widely used as precise analytical chemistry tools for the real-time monitoring of a negligibly small amount of surface-attached mass of biological components, in particular, in environmental biosensor measurements. The surface acoustic wave (SAW)-based sensors and the quartz crystal microbalance (QCM) compared in our work belong to the leading group due to their considerable advantages. These piezoelectric resonators are considered now as high-resolution analytical tools allowing researchers to discriminate between components due to the selective

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Eryürek, M., Y. Karadag, M. Ghafoor, N. Bavili, K. Cicek, and A. Kiraz. "Liquid refractometric sensors based on optical fiber resonators." Sensors and Actuators A: Physical 265 (October 2017): 161–67. http://dx.doi.org/10.1016/j.sna.2017.08.019.

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Martin, S. J., G. C. Frye, and K. O. Wessendorf. "Sensing liquid properties with thickness-shear mode resonators." Sensors and Actuators A: Physical 44, no. 3 (1994): 209–18. http://dx.doi.org/10.1016/0924-4247(94)00806-x.

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Martín-Pérez, Alberto, Daniel Ramos, Javier Tamayo, and Montserrat Calleja. "Nanomechanical Molecular Mass Sensing Using Suspended Microchannel Resonators." Sensors 21, no. 10 (2021): 3337. http://dx.doi.org/10.3390/s21103337.

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In this work we study the different phenomena taking place when a hydrostatic pressure is applied in the inner fluid of a suspended microchannel resonator. Additionally to pressure-induced stiffness terms, we have theoretically predicted and experimentally demonstrated that the pressure also induces mass effects which depend on both the applied pressure and the fluid properties. We have used these phenomena to characterize the frequency response of the device as a function of the fluid compressibility and molecular masses of different fluids ranging from liquids to gases. The proposed device i

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Yu, Jibo, Elfed Lewis, Gilberto Brambilla, and Pengfei Wang. "Temperature Sensing Performance of Microsphere Resonators." Sensors 18, no. 8 (2018): 2515. http://dx.doi.org/10.3390/s18082515.

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In recent years, many temperature sensing devices based on microsphere resonators have emerged, attracting an increasing research interest. For the purpose of this review article, microsphere resonators are divided according to their constituting materials, namely silicone, silica, compound glass, and liquid droplet. Temperature monitoring relies mainly on the thermo-optic/thermal expansion of the microspheres and on the fluorescence of the doped ions. This article presents a comprehensive review of the current state of the art of microsphere based temperature sensing and gives an indication o

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32

Jaka, Zaplotnik, Mur Urban, Malkar Deepshika, Ranjkesh Amid, Muševič Igor, and Ravnik Miha. "Photonic eigenmodes and transmittance of finite-length 1D cholesteric liquid crystal resonators." Scientific Reports 13, no. 1 (2023): 16868. https://doi.org/10.1038/s41598-023-43912-2.

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Cholesteric liquid crystals exhibit a periodic helical structure that partially reflects light with wavelengths comparable to the period of the structure, thus performing as a one-dimensional photonic crystal. Here, we demonstrate a combined experimental and numerical study of light transmittance spectra of finite-length helical structure of cholesteric liquid crystals, as affected by the main system and material parameters, as well as the corresponding eigenmodes and frequency eigenspectra with their <em>Q</em>-factors. Specifically, we have measured and simulated transmittance spectra o

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Mordan, Emily H., James H. Wade, Eric Pearce, David M. Meunier, and Ryan C. Bailey. "A linear mass concentration detector for solvent gradient polymer separations." Analyst 145, no. 13 (2020): 4484–93. http://dx.doi.org/10.1039/c9an02533b.

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Silicon photonic microring resonators are an optical sensor utilized here as a detector for gradient elution liquid chromatography of polymers. Universal refractive index based detection and a linear mass concentration response is observed.

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Ruiz-Díez, Víctor, Javier Toledo, Jorge Hernando-García, Abdallah Ababneh, Helmut Seidel, and José Sánchez-Rojas. "A Geometrical Study on the Roof Tile-Shaped Modes in AlN-Based Piezoelectric Microcantilevers as Viscosity–Density Sensors." Sensors 19, no. 3 (2019): 658. http://dx.doi.org/10.3390/s19030658.

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Cantilever resonators based on the roof tile-shaped modes have recently demonstrated their suitability for liquid media monitoring applications. The early studies have shown that certain combinations of dimensions and order of the mode can maximize the Q-factor, what might suggest a competition between two mechanisms of losses with different geometrical dependence. To provide more insight, a comprehensive study of the Q-factor and the resonant frequency of these modes in microcantilever resonators with lengths and widths between 250 and 3000 µm and thicknesses between 10 and 60 µm is presented

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Анцев, И. Г., С. В. Богословский та Г. А. Сапожников. "ДАТЧИК ДАВЛЕНИЯ НА ПОВЕРХНОСТНЫХ АКУСТИЧЕСКИХ ВОЛНАХ С ЗЕРКАЛЬНОЙ ТОПОЛОГИЕЙ". NANOINDUSTRY Russia 96, № 3s (2020): 389–91. http://dx.doi.org/10.22184/1993-8578.2020.13.3s.389.391.

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Предложена новая конструкция датчиков давления, реализующая зеркальную топологию чувствительного элемента. Применение линий задержки позволяет создавать пассивные устройства, работающие на больших дальностях. Предлагаемое решение расширяет область применения зеркальных топологий для измерений давления. The liquid and gas pressure sensor is one of the most required sensors. Usually, resonator circuits are used in the passive wireless sensors based on surface acoustic waves. Wide application of pressure measurements resonators is caused by their small dimensions and, accordingly, by possibility

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Mukhin, Nikolay V. "Microfluidic Acoustic Metamaterial SAW Based Sensor." Journal of the Russian Universities. Radioelectronics 22, no. 4 (2019): 75–81. http://dx.doi.org/10.32603/1993-8985-2019-22-4-75-81.

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Introduction. Microacoustic sensors based on surface acoustic wave (SAW) devices allow the sensor integration into a wafer based microfluidic analytical platforms such as lab-on-a-chip. Currently exist various approaches of application of SAW devices for liquid properties analysis. But this sensors probe only a thin interfacial liquid layer. The motivation to develop the new SAW-based sensor is to overcome this limitation. The new sensor introduced here uses acoustic measurements, including surface acoustic waves (SAW) and acoustic methamaterial sensor approaches. The new sensor can become the

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Yaghmaee, Pouria, Onur Hamza Karabey, Bevan Bates, Christophe Fumeaux, and Rolf Jakoby. "Electrically Tuned Microwave Devices Using Liquid Crystal Technology." International Journal of Antennas and Propagation 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/824214.

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An overview of liquid crystal technology for microwave and millimeter-wave frequencies is presented. The potential of liquid crystals as reconfigurable materials arises from their ability for continuous tuning with low power consumption, transparency, and possible integration with printed and flexible circuit technologies. This paper describes physical theory and fundamental electrical properties arising from the anisotropy of liquid crystals and overviews selected realized liquid crystal devices, throughout four main categories: resonators and filters, phase shifters and delay lines, antennas

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Aleksandrov V. A. "Capillary-wave warp-drive." Technical Physics Letters 48, no. 14 (2022): 55. http://dx.doi.org/10.21883/tpl.2022.14.55119.18899.

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The generation of surface water flow in channels with sources and resonators of capillary oscillations is detected and investigated. Moving devices with a capillary-wave accelerator of the surface fluid flow are demonstrated. The surface flow of liquid in the channel is generated due to the local deformation of the liquid surface by capillary vibrations and the formation of an excess liquid surface on average near the source and the transport of this surface by waves. Keywords: capillary oscillations and waves, surface liquid flow, channel.

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Александров, В. А. "Капиллярно-волновой варп-двигатель". Письма в журнал технической физики 47, № 22 (2021): 13. http://dx.doi.org/10.21883/pjtf.2021.22.51719.18899.

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The generation of surface water flow in channels with sources and resonators of capillary oscillations is detected and investigated. Moving devices with a capillary-wave accelerator of the surface fluid flow are demonstrated. The surface flow of liquid in the channel is generated due to the local deformation of the liquid surface by capillary vibrations and the formation of an excess liquid surface on average near the source and the transport of this surface by waves.

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Sun, Ping, Yurun Chen, Tingting Tang, et al. "Effect of c-axis tilted orientation ZnO thin film on shear-mode bulk acoustic resonator in liquid environment." Materials Express 10, no. 9 (2020): 1477–83. http://dx.doi.org/10.1166/mex.2020.1779.

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ZnO has been widely used as piezoelectric materials in bulk acoustic resonators, especially in shear-mode film bulk acoustic resonators (FBAR). In this paper, we studied the effect of c-axis tilted ZnO thin film on shear mode FBAR in liquid environment. Mechanical impedances of FBARs are compared between shear-mode and longitudinal-mode wave due to their different orientations of ZnO thin film. It is found ZnO thin film with 43° c-axis tilted angels induces quasi-shear-mode acoustic wave only. The Q values of FBAR with 43° c-axis tilted ZnO are 256.94 in air at 0.8148 GHz, and 34.34 in water a

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Platz, Daniel, Georg Pfusterschmied, and Ulrich Schmid. "Modelling Fluid Damping of Non-Conventional Vibration Modes in MEMS Resonators." Proceedings 2, no. 13 (2018): 896. http://dx.doi.org/10.3390/proceedings2130896.

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Resonant micro- and nanoelectromechanical systems (MEMS/NEMS) are typically subject to interaction with a liquid or gaseous environment. Recently, it has been demonstrated that non-conventional eigenmodes exhibit remarkably high quality factors (Q factors) in liquids. However, the physical origin of this phenomenon remains elusive. Here we introduce a definition of non-conventional eigenmodes for cantilever structures and develop a boundary integral method for describing the interaction of an incompressible viscous fluid and a non-conventional eigenmode of a MEMS/NEMS resonator. With this fram

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Shen, Zhi-Xiong, Sheng-Hang Zhou, Shi-Jun Ge, Wei Hu, and Yan-Qing Lu. "Liquid crystal enabled dynamic cloaking of terahertz Fano resonators." Applied Physics Letters 114, no. 4 (2019): 041106. http://dx.doi.org/10.1063/1.5082224.

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Wang, Qi, Sheng Liu, Liying Liu, and Lei Xu. "Optomechanics in anisotropic liquid crystal -filled micro-bubble resonators." Optics Express 27, no. 12 (2019): 17051. http://dx.doi.org/10.1364/oe.27.017051.

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Ward, Jonathan M., Yong Yang, and Sile Nic Chormaic. "Highly Sensitive Temperature Measurements With Liquid-Core Microbubble Resonators." IEEE Photonics Technology Letters 25, no. 23 (2013): 2350–53. http://dx.doi.org/10.1109/lpt.2013.2283732.

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Zhang, Chao, Stefan Schranz, and Peter Hauptmann. "Surface microstructures of TSM resonators and liquid properties measurement." Sensors and Actuators B: Chemical 65, no. 1-3 (2000): 296–98. http://dx.doi.org/10.1016/s0925-4005(99)00319-6.

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Aliyev, Yelchin, Svitlana Mykolenko, Vitaliy Yaropud, and Roman Malegin. "SUBSTANTIATION OF THE CONSTRUCTIVE-TECHNOLOGICAL SCHEME OF THE CAVITATION DISPERSATOR-HOMOGENIZER OF AGRICULTURAL RAW MATERIALS OF PLANT ORIGIN FOR FODDER PURPOSES." ENGINEERING, ENERGY, TRANSPORT AIC, no. 2(109) (August 27, 2020): 5–15. http://dx.doi.org/10.37128/2520-6168-2020-2-1.

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n urgent task is to increase the efficiency of preparation of high-quality feed through the use of technological processes of dispersion and homogenization with cavitation processing of feed components. The aim of the research is to substantiate the constructive-technological scheme of cavitation dispersant-homogenizer of agricultural raw materials of plant origin for feed purposes. As a result of research, the design of the working bodies (rotor and stator) of the cavitation dispersant-homogenizer was proposed and justified. Structurally, stator resonators and rotor confusers at the moment of

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Muñoz-Enano, Jonathan, Paris Vélez, Marta Gil, and Ferran Martín. "Planar Microwave Resonant Sensors: A Review and Recent Developments." Applied Sciences 10, no. 7 (2020): 2615. http://dx.doi.org/10.3390/app10072615.

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Microwave sensors based on electrically small planar resonant elements are reviewed in this paper. By virtue of the high sensitivity of such resonators to the properties of their surrounding medium, particularly the dielectric constant and the loss factor, these sensors are of special interest (although not exclusive) for dielectric characterization of solids and liquids, and for the measurement of material composition. Several sensing strategies are presented, with special emphasis on differential-mode sensors. The main advantages and limitations of such techniques are discussed, and several

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Abdolrazzaghi, Mohammad, Vahid Nayyeri, and Ferran Martin. "Techniques to Improve the Performance of Planar Microwave Sensors: A Review and Recent Developments." Sensors 22, no. 18 (2022): 6946. http://dx.doi.org/10.3390/s22186946.

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Planar microwave sensors have become increasing developed in recent decades, especially in material characterization (solid/liquid) as they provide regions highly sensitive to the surrounding medium. However, when it comes to deciphering the content of practical biological analytes or chemical components inside a host medium, even higher sensitivities are required due to their minute concentrations. This review article presents a comprehensive outlook on various methodologies to enhance sensitivity (e.g., coupling resonators, channel embedding, analyte immobilization, resonator pattern recogni

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Riesch, Christian, Erwin K. Reichel, Franz Keplinger, and Bernhard Jakoby. "Characterizing Vibrating Cantilevers for Liquid Viscosity and Density Sensing." Journal of Sensors 2008 (2008): 1–9. http://dx.doi.org/10.1155/2008/697062.

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Miniaturized liquid sensors are essential devices in online process or condition monitoring. In case of viscosity and density sensing, microacoustic sensors such as quartz crystal resonators or SAW devices have proved particularly useful. However, these devices basically measure a thin-film viscosity, which is often not comparable to the macroscopic parameters probed by conventional viscometers. Miniaturized cantilever-based devices are interesting alternatives for such applications, but here the interaction between the liquid and the oscillating beam is more involved. In our contribution, we

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SADER, JOHN E., THOMAS P. BURG, and SCOTT R. MANALIS. "Energy dissipation in microfluidic beam resonators." Journal of Fluid Mechanics 650 (March 22, 2010): 215–50. http://dx.doi.org/10.1017/s0022112009993521.

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The fluid–structure interaction of resonating microcantilevers immersed in fluid has been widely studied and is a cornerstone in nanomechanical sensor development. In many applications, fluid damping imposes severe limitations by strongly degrading the signal-to-noise ratio of measurements. Recently, Burg et al. (Nature, vol. 446, 2007, pp. 1066–1069) proposed an alternative type of microcantilever device whereby a microfluidic channel was embedded inside the cantilever with vacuum outside. Remarkably, it was observed that energy dissipation in these systems was almost identical when air or li

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