Results 181 to 190 of about 594,359 (210)

Double-ended Tuning Fork Quartz Accelerometer

40th Annual Symposium on Frequency Control, 1986
Quartz accelerometers with frequency output have been designed and built using etched double-ended tuning fork technology. These devices consist of two tuning forks connected in a cantilever beam configuration with beryllium-copper spacers which serves as a proof mass and inboard spacer.
W.J. Kass, G.S. Snow
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Quartz Tuning Fork Viscometers for Helium Liquids

Journal of Low Temperature Physics, 2004
Mechanical resonators, in the form of vibrating wires or torsional oscillators, have long been employed as sensors in liquid 3He and 3He–4He mixtures. The damping of resonators is due to the viscosity of the surrounding liquid which is a strong, well-known function of temperature for bulk Fermi liquids.
D. O. Clubb, O. V. L. Buu, R. M. Bowley, R. Nyman, J. R. Owers-Bradley   +4 more
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Quartz-Crystal Tuning-Fork Tactile Sensor

Japanese Journal of Applied Physics, 1999
Sensing behavior of a quartz-crystal tuning-fork tactile sensor was tested using several types of materials (metals and slide glass) and several sheets of sandpaper of different roughnesses fixed on copper or aluminum plates with acrylic resin paste.
Hideaki Itoh, Masataka Nomura, Naoya Katakura   +2 more
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Calibration of quartz tuning fork temperature sensors

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, 2008
This paper presents the results from investigations of thermal sensitivity, thermal response time and long-term stability of a newly miniaturized design of thermal sensitive quartz tuning fork resonator working at flexural mode with ZY-cut at fundamental frequency of 32 kHz. Special attention is given to the methodology and equipment for calibration of
Jun Xu, Bo You, Hong-jun Wang, Jing Ma
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Development of quartz tuning fork temperature sensors

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, 2008
A temperature sensing technique taking thermal sensitive quartz tuning fork vibration arm as sensitive components and output of digital frequency is presented. In the design of quartz tuning fork temperature sensor, selecting the cut type of quartz tuning fork according to the each anisotropic nature of quartz tuning fork, so that there is a linear ...
Jun Xu, Bo You, Xue-fei Zhao, Xin Li
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Quartz Tuning Forks as Cryogenic Vacuum Gauges

Journal of Low Temperature Physics, 2014
We report measurements of the mechanical $$Q$$ of a 32.7 kHz quartz tuning fork as a function of pressure for helium and argon at T  $
F. M. Huisman, A. E. Velasco, E. Van Cleve, P. Taborek   +3 more
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Development of a fast humidity sensor based on quartz tuning fork

2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings, 2016
This work investigates the response to humidity of Quartz Tuning Forks (QTFs) coated with a sol-gel iron-doped amorphous magnesium silicate sensing film. Thanks to the reduced film thickness, the investigated sensors exploit a short time response thus being suitable for applications where a fast humidity change is expected such as in breath monitoring.
CARULLO, Alessio, VALLAN, Alberto, AFIFY, AHMED SABRY SHEHATA, TULLIANI, Jean Marc Christian   +3 more
openaire   +3 more sources

Miniaturized Angular Rate Sensor with Laminated Quartz Tuning Fork

Japanese Journal of Applied Physics, 2006
We have developed a miniaturized angular rate sensor (5.0×3.2×1.3 mm3) with a laminated quartz tuning fork (3.7×0.97×0.24 mm3). An advanced reliable assembly process technology was applied to the packaging of LSI and the sensor element of the small thin sensor. Therefore, the sensor had high quality and superior mass productivity.
H. Uehara, T. Ohtsuka, T. Inoue, M. Yoshimatu, H. Matsudo, M. Okazaki   +5 more
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Acoustic Resonances in Helium Fluids Excited by Quartz Tuning Forks

Journal of Low Temperature Physics, 2010
Ordinary quartz tuning fork resonators, operated at about 30 or 200 kHz frequency, couple to acoustic first and second sound resonances in helium fluids under certain conditions. We have studied acoustic resonances in supercritical 4He, normal and superfluid 4He, and in isotopic mixtures of helium.
Salmela A., Rysti J., Tuoriniemi J.
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Application of micromachined quartz tuning fork resonator for temperature sensing

The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, 2013
This article describes a micromachined quartz tuning fork resonator, 6 mm in height by 2 mm in diamter, holding a two-terminal electronic component with a nomial frequency of 36 kHz (at zero degree) and 15 pF typical capacitance packed in a 90 Pa He gas sealed metal container, which has been used as a sensor for temperature measurement with good ...
Xin Li, Jing Ma, Hai-bo Xu, Zhi-chao Jia
openaire   +2 more sources