scholarly journals A langasite surface acoustic wave wide-range temperature sensor with excellent linearity and high sensitivity

AIP Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 015143
Author(s):  
Hongsheng Xu ◽  
Hao Jin ◽  
Shurong Dong ◽  
Jinkai Chen ◽  
Xinyu Song ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Wide Range

A high sensitivity wireless mass-loading surface acoustic wave DNA biosensor

2014 ◽  
Vol 28 (07) ◽  
pp. 1450056 ◽  
Author(s):  
Hua-Lin Cai ◽  
Yi Yang ◽  
Yi-Han Zhang ◽  
Chang-Jian Zhou ◽  
Cang-Ran Guo ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Dna Sequences ◽  
Biological Treatment ◽  
High Performance ◽  
Processing System ◽  
High Sensitivity ◽  
Treatment Method ◽  
Saw Sensor ◽  
Target Dna

In this paper, a surface acoustic wave (SAW) biosensor with gold delay area on LiNbO 3 substrate detecting DNA sequences is proposed. By well-designed device parameters of the SAW sensor, it achieves a high performance for highly sensitive detection of target DNA. In addition, an effective biological treatment method for DNA immobilization and abundant experimental verification of the sensing effect have made it a reliable device in DNA detection. The loading mass of the probe and target DNA sequences is obtained from the frequency shifts, which are big enough in this work due to an effective biological treatment. The experimental results show that the biosensor has a high sensitivity of 1.2 pg/ml/Hz and high selectivity characteristic is also verified by the few responses of other substances. In combination with wireless transceiver, we develop a wireless receiving and processing system that can directly display the detection results.

A surface acoustic wave impedance-loaded high sensitivity sensor with wide dynamic range for ultraviolet light detection

2019 ◽  
Vol 296 ◽  
pp. 70-78 ◽  
Author(s):  
G. Ya. Karapetyan ◽  
V.E. Kaydashev ◽  
D.A. Zhilin ◽  
M.E. Kutepov ◽  
T.A. Minasyan ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Ultraviolet Light ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Wave Impedance ◽  
Wide Dynamic Range ◽  
Light Detection

Sezawa Propagation Mode in GaN on Si Surface Acoustic Wave Type Temperature Sensor Structures Operating at GHz Frequencies

2015 ◽  
Vol 36 (12) ◽  
pp. 1299-1302 ◽  
Author(s):  
Alexandru Muller ◽  
Ioana Giangu ◽  
Antonis Stavrinidis ◽  
Alexandra Stefanescu ◽  
George Stavrinidis ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Temperature Sensor ◽  
Propagation Mode ◽  
Wave Type ◽  
Gan On Si

scholarly journals Design and Optimization of a Novel SAW Gyroscope Structure Based on Amplitude Modulation with 1-D Phononic Crystals

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1485
Author(s):  
Fei Ge ◽  
Liye Zhao ◽  
Yang Zhang
Keyword(s):  
Signal Processing ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Amplitude Modulation ◽  
Phononic Crystal ◽  
Defect Mode ◽  
High Sensitivity ◽  
Phononic Crystals ◽  
Linear Range ◽  
One Dimensional

Surface acoustic wave gyroscopes (SAWGs), as a kind of all-solid-state micro-electro-mechanical system (MEMS) gyroscopes, can work normally under extremely high-impact environmental conditions. Among the current SAWGs, amplitude-modulated gyroscopes (AMGs) are all based on the same gyro effect, which was proved weak, and their sensitivity and intensity of the output are both lower than frequency-modulated gyroscopes (FMGs). However, because FMGs need to process a series of frequency signals, their signal processing and circuits are far less straightforward and simple than AMGs. In order to own both high-sensitivity and simple signal processing, a novel surface acoustic traveling wave gyroscope based on amplitude modulation is proposed, using one-dimensional phononic crystals (PCs) in this paper. In view of its specific structure, the proposed gyroscope consists of a surface acoustic wave oscillator and a surface acoustic wave delay line within a one-dimensional phononic crystal with a high-Q defect mode. In this paper, the working principle is analyzed theoretically through the partial wave method (PWM), and the gyroscopes with different numbers of PCs are also designed and studied by using the finite element method (FEM) and multiphysics simulation. The research results demonstrate that under a 1 V oscillator voltage output, the higher sensitivity of −23.1 mV·(rad/s)−1 in the linear range from −8 rad/s to 8 rad/s is reached when the gyro with three PC walls, and the wider linear range from −15 rad/s to 17.5 rad/s with the sensitivity of −6.7 mV·(rad/s)−1 with only one PC wall. Compared with the existing AMGs using metal dots to enhance the gyro effect, the sensitivity of the proposed gyro is increased by 15 to 112 times, and the linear range is increased by 4.6 to 186 times, even without the enhancement of the metal dots.

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