Article
Acoustics
Christopher Hakoda, Cristian Pantea, Vamshi Krishna Chillara
Summary: The paper presents a simple method for designing localized regions with minimal SAW amplitude, achieved by controlling the beat phenomenon. These regions can have variable widths and be positioned consecutively. The efficacy of the proposed method for SAW wave propagation is demonstrated through supplementary simulations.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Chemistry, Analytical
Umar Farooq, Xiufang Liu, Wei Zhou, Muhammad Hassan, Lili Niu, Long Meng
Summary: This method utilizes the collision between nanowires and cells to induce cell lysis efficiently, with advantages of low power consumption, fast processing, reusability, and minimal sample consumption. Ni coated Ag-nanowires show promise for applications in point of care diagnostics.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Engineering, Multidisciplinary
M. Z. Aslam, H. Zhang, V. S. Sreejith, M. Naghdi, S. Ju
Summary: This paper provides a comprehensive review of the recent advances in the development of surface acoustic wave (SAW) sensors for industrial applications, and discusses the potentials, challenges, and future research directions in this field.
Article
Acoustics
Yujie Ai, Hongrui Lv, Ye Wang, Zhe Liu, Yawei He, Defeng Lin, Lifang Jia, Yun Zhang
Summary: A low insertion loss (IL) surface acoustic wave (SAW) filter is demonstrated on Carbon-doped semi-insulating c-plane bulk GaN without external matching elements. The filter exhibits a center frequency of 477.05 MHz, 3 dB bandwidth of 0.308 MHz, out-of-band attenuation of 32.5 dB, and return loss of -9.72 dB. The study also explores the impact of the number of interdigital transducers (NIDT) and acoustic propagation direction on filter performance.
Review
Chemistry, Analytical
Jia Ning, Yulin Lei, Hong Hu, Chenhui Gai
Summary: This review focuses on the development of surface acoustic wave-enabled acoustic drop ejection (SAW-ADE) technology, which can eject droplets from liquids without touching the sample. The article provides an overview of the technology, discusses influencing factors, and introduces its application scenarios. The optimization of SAW-ADE systems for specific applications is crucial.
Article
Engineering, Electrical & Electronic
Xiangrong Li, Li Qin, Lifeng Guo, Qiulin Tan
Summary: A flexible surface acoustic wave (SAW) strain sensor based on a 100 μm thin langasite substrate is proposed, with a linear strain range of 1-1800 με and strain sensitivity of 44.68 Hz/με at room temperature. The sensor is affected by temperature at a fixed strain, and changes in temperature or strain cause variations in the measured frequency. To accurately measure strain in complex environments, the interference of temperature needs to be eliminated, and the intercept and slope are extracted from the strain-frequency curves at different temperatures for accurate estimation.
IEEE SENSORS JOURNAL
(2023)
Article
Acoustics
Chen Fu, Qutong Yang, Yabing Ke, Ran Tao, Jingting Luo, Xiaoming Fan, Bing Zhang, Honglang Li
Summary: This article investigates the application of Lamb wave-based unidirectional transducers in acoustic wave-driven microfluidic devices, and verifies its efficiency through simulation and experiments.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Chemistry, Analytical
Yukai Liu, Miaomiao Ji, Nanxin Yu, Caiqin Zhao, Gang Xue, Wenxiao Fu, Xiaojun Qiao, Yichi Zhang, Xiujian Chou, Wenping Geng
Summary: In this study, travelling surface acoustic wave-based devices were used to capture suspended Polystyrene microspheres in sessile droplets and control their aggregation into clusters or rings. The transition between particle ring and cluster was achieved by modulating the acoustic amplitude.
Review
Materials Science, Multidisciplinary
Serge Ismael Zida, Yue-Der Lin, Yit Lung Khung
Summary: The development of rapid biosensing platforms is crucial for disease detection and clinical biomarker analysis. Among the various biosensing technologies, surface acoustic wave (SAW) biosensors stand out due to their simple manufacturing requirements and wide operating frequency range. SAW devices have been successfully utilized for detecting important bioactive targets and some designs are already commercially available.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Review
Chemistry, Analytical
Debdyuti Mandal, Sourav Banerjee
Summary: This article introduces surface acoustic waves (SAWs) and their applications in sensors. By explaining the physics of guided SAWs and the piezoelectric materials used, it discusses how the materials and cuts can alter sensor functionality. It summarizes key electrode configurations and guidelines for generating different guided wave patterns, and explores the applications of SAW sensors in various fields and potential improvement plans in science and technology.
Article
Acoustics
Xiaohu Liang, Bin Lin, Zaiwei Liu, Xiaokang Ma
Summary: The research investigates the influence of surface roughness on the dispersion and attenuation of surface acoustic wave (SAW) and finds that surface roughness has a significant impact on both dispersion and attenuation.
Article
Thermodynamics
Dong-Sheng Guo, Xiao-Bin Li, Si-Ning Li, Hong-Na Zhang, Feng-Chen Li, Ping-Jian Ming
Summary: In this study, the dynamic mechanism of vapor bubble during boiling process under the effect of acoustic field was numerically investigated. It was found that the acoustic field has an influence on bubble behaviors, creating tiny vortices at the root of the bubble and causing one bubble to collapse into two separate bubbles. Furthermore, the acoustic field can break the growing bubbles and promote flow boiling heat transfer.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Nanoscience & Nanotechnology
Vaidotas Miseikis, Richie J. Shilton, Marco Travagliati, Matteo Agostini, Marco Cecchini, Vincenzo Piazza, Camilla Coletti
Summary: Surface acoustic wave (SAW) devices utilizing graphene-based interdigital transducers (IDTs) have been developed to generate SAWs with a frequency of 100 MHz in microfluidic devices, allowing precise manipulation of microparticle solutions by acoustic streaming and mixing of liquids. Due to the negligible mass loading of the piezoelectric surface by graphene, the SAWs generated by these devices do not exhibit frequency shift commonly observed with metal IDTs.
Article
Acoustics
Beomseok Cha, Song Ha Lee, Syed Atif Iqrar, Hee-Gyeong Yi, Jangho Kim, Jinsoo Park
Summary: In this study, a vertical-type ultrasonic SAW-based microfluidic mixer was proposed for rapid flow mixing with improved efficiency and controllability. Computational fluid dynamics simulations and experimental investigations were conducted to elucidate the acousto-hydrodynamic phenomenon of the vertical-type SAW-induced ASF. The SAW-induced vortices acted as a hydrodynamic barrier for controlled flow mixing, and proof-of-concept application demonstrated rapid red blood cell lysis with high efficiency based on the physical interactions with the SAW-induced acoustic vortical flows.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Acoustics
Xiaohu Liang, Bin Lin, Zaiwei Liu, Anyao Du
Summary: This paper evaluates the surface damage of machined surface of brittle material by using the attenuation of laser-induced surface acoustic wave (SAW) in propagation. The feasibility of evaluating surface layer damage based on the attenuation of SAW is demonstrated theoretically and experimentally, using single crystal silicon as an example. The results show that the attenuation coefficient of SAW can reflect the changes in surface damage.
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)