Results 201 to 210 of about 10,013 (252)
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THE TUNING-FORK ROOTS OF THE QUARTZ CLOCK
2023Abstract The chapter explores the development of new exact tuning-fork frequency-measuring standards useful for the novel range of radio communication during WWI and its aftermath, and the construction of the first electronic clock required to monitor the accuracy of such a standard.
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Laser & Photonics Reviews
In this paper, an ultrahigh sensitive light‐induced thermoelastic spectroscopy (LITES) sensor based on a trilayer ultrathin perfect absorber coated T‐head quartz tuning fork (QTF) is reported for the first time.
Runqiu Wang +6 more
semanticscholar +1 more source
In this paper, an ultrahigh sensitive light‐induced thermoelastic spectroscopy (LITES) sensor based on a trilayer ultrathin perfect absorber coated T‐head quartz tuning fork (QTF) is reported for the first time.
Runqiu Wang +6 more
semanticscholar +1 more source
ACS Sensors
In this paper, a highly sensitive methane (CH4) and acetylene (C2H2) dual-gas light-induced thermoelastic spectroscopy (LITES) sensor based on a novel dual-path multiring multipass cell (DPMR-MPC) and a circle-head quartz tuning fork (QTF) was ...
Haiyue Sun +4 more
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In this paper, a highly sensitive methane (CH4) and acetylene (C2H2) dual-gas light-induced thermoelastic spectroscopy (LITES) sensor based on a novel dual-path multiring multipass cell (DPMR-MPC) and a circle-head quartz tuning fork (QTF) was ...
Haiyue Sun +4 more
semanticscholar +1 more source
IEEE Sensors Journal, 2023
In this article, a dual-spectroscopy gas sensing system based on a ring cavity laser and quartz tuning fork (QTF) is designed. A 15 m erbium-doped fiber (EDF) with 1500 ppm doping concentration is used as a gain medium, and a piezoelectric transducer ...
Shaoqiang Bi +5 more
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In this article, a dual-spectroscopy gas sensing system based on a ring cavity laser and quartz tuning fork (QTF) is designed. A 15 m erbium-doped fiber (EDF) with 1500 ppm doping concentration is used as a gain medium, and a piezoelectric transducer ...
Shaoqiang Bi +5 more
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Automatic assembly of quartz tuning fork and microcantilever
2012 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2012Conventional atomic force microscopes (AFMs) detect microcantilever deflection using an optical lever system. However, the complex mechanism of the optical lever system and the alignment of the laser spot on the microcantilever prevent such AFM systems from scanning large samples. AFM systems using a quartz tuning fork (QTF) as a force sensor have been
Chiao-Hua Cheng +3 more
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A Low-Cost Full-Range Hydrogen Sensor Based on Quartz Tuning Fork
IEEE Sensors JournalHydrogen (H2) sensors have a wide range of applications in green energy, including fuel cell monitoring, hydrogen storage safety, and leak detection in renewable energy systems. This article reports a quartz tuning fork (QTF)-based low-cost full-range H2
Chuanning Li +3 more
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Calibration of quartz tuning fork temperature sensors
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, 2008This 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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Quartz-Crystal Tuning-Fork Tactile Sensor
Japanese Journal of Applied Physics, 1999Sensing 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 +2 more
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Double-ended Tuning Fork Quartz Accelerometer
40th Annual Symposium on Frequency Control, 1986Quartz 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, 2004Mechanical 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 +4 more
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