Results 271 to 280 of about 229,260 (299)

High frequency thickness shear mode devices for organic vapor sensing

Sensors and Actuators B: Chemical, 2007
Abstract Thickness shear mode (TSM) quartz resonators at a fundamental frequency of 96 MHz were evaluated for their performance in organic vapor sensing applications and results were compared with the performance of 10 and 20 MHz resonators. These devices were produced by chemical milling of AT-cut quartz.
Randolph D. Williams, Anant K. Upadhyayula, Venkat R. Bhethanabotla   +2 more
openaire   +1 more source

Transient acoustic field radiated by a thickness—shear mode transducer

Ultrasonics, 1988
Abstract The acoustic field generated by a thickness—shear mode transducer is theoretically analysed by an approximate model to find the origin of the longitudinal pulse in the signal received by the same transducer. It is believed to arise from the edge longitudinal wave.
H.L. Zhang, M.X. Li, C.F. Ying
openaire   +1 more source

Thickness shear mode quartz crystal resonators with optimized elliptical electrodes

Chinese Physics B, 2011
Quartz crystal resonators (QCRs) with circular electrodes have been widely used for various liquid and gas sensing applications. In this work, quartz crystal resonators with elliptical electrodes were studied and tested for liquid property measurement.
Ting-Feng Ma, Chao Zhang, Xiao-Ning Jiang, Guan-Ping Feng   +3 more
openaire   +1 more source

Polymer based thickness shear mode acoustic resonator for sensing of fluid complex shear modulus

2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2017
This paper describes a low-cost high-quality acoustic device for measuring complex shear modulus of contact fluid. The sensor is based on thickness shear mode (TSM) piezoelectric resonator. It consists of stretched and poled polyvinylidene fluoride (PVDF) films utilizing the shear piezoelectric properties of PVDF.
Sharmistha Bhadra, Konrad Walus
openaire   +1 more source

Mass sensitivity of thickness-shear modes in an isotropic elastic circular cylinder

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2006
Theoretical prediction of the mass sensitivity of axial and tangential thickness-shear modes in an isotropic elastic circular cylinder due to a thin surface mass layer is presented. Results suggest the possibility of new mass sensors with certain advantages.
Jiashi, Yang, Shaohua, Guo
openaire   +2 more sources

High-temperature acoustic loss in thickness-shear mode quartz resonators

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052), 2002
Sensor and other applications are causing an increased use of quartz resonators at high-temperatures. The Q of a quartz resonator is limited by a number of different mechanisms including the properties of the quartz itself. The Q of all quartz resonators is limited by interaction between the active mode and the thermal phonon bath.
openaire   +1 more source

Study on a Piezoelectric Gyroscope in Thickness-Shear Mode

2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2022
Xiao-Hu Zhen, De-Jin Huang, Chong Liu
openaire   +1 more source

Single response thickness-shear mode resonators using circular bevelled plates

Journal of Scientific Instruments, 1952
It is important that piezoelectric crystals used in wave-filters should be free from unwanted responses in a sufficiently wide frequency range. This article discusses how this condition can be fulfilled by circular bevelled plates vibrating in high frequency thickness modes.
openaire   +1 more source

Performance improvement of micro-ultrasonic motors using the thickness shear mode piezoelectric elements

Sensors and Actuators A: Physical, 2022
Tomoaki Mashimo
exaly  

Deformation mode and wall thickness variation in conventional spinning of metal sheets

International Journal of Machine Tools and Manufacture, 2022
Pengfei Gao, Fuguo Li, M W Fu
exaly