Results 11 to 20 of about 7,101 (242)

Design of a Portable and Low-Cost Mass Sensitive Quartz Tuning Fork Sensor [PDF]

open access: goldProceedings, 2017
The resonance frequency of quartz tuning fork (QTF) depends on the mass adsorbed to its prongs, so it is used to measure minor mass changes and detect target analyte at picogram levels. [...]
Mehmet Altay Ünal   +2 more
doaj   +2 more sources

Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv – Level sensitivity using a T-shaped custom tuning fork

open access: yesPhotoacoustics, 2022
Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N2O and H2O detection, operating at a wavelength of 4.59 µm.
Jakob Hayden   +4 more
doaj   +3 more sources

Improved Tuning Fork for Terahertz Quartz-Enhanced Photoacoustic Spectroscopy [PDF]

open access: yesSensors, 2016
We report on a quartz-enhanced photoacoustic (QEPAS) sensor for methanol (CH3OH) detection employing a novel quartz tuning fork (QTF), specifically designed to enhance the QEPAS sensing performance in the terahertz (THz) spectral range. A discussion of the QTF properties in terms of resonance frequency, quality factor and acousto-electric transduction ...
Angelo Sampaolo   +8 more
openaire   +6 more sources

One-step quartz-MEMS micro-fabrication strategy for a grooved tuning fork [PDF]

open access: diamondNanotechnology and Precision Engineering
Grooved tuning forks with hierarchical structures have become some of the most widely used piezoelectric quartz microelectromechanical system devices; however, fabricating these devices requires multi-step processes due to the complexity of etching of ...
Yide Dong   +3 more
doaj   +2 more sources

Test System for Quartz Tuning Fork Temperature Sensor

open access: yesJournal of Harbin University of Science and Technology, 2017
:Quartz tuning fork temperature Sen SorS (QTFTS) 1S月 kind of high sensor,which has digital signal output and uses quartz tuning fork resonant device as precision digital temperature thermal applications. It can convert the change of Aimed at to study the
LIU Chun-hua, MENG Yue-xia, MA Jing
doaj   +2 more sources

Photo-Induced Force Microscopy by Using Quartz Tuning-Fork Sensor [PDF]

open access: yesSensors, 2019
We present the photo-induced force microscopy (PiFM) studies of various nano-materials by implementing a quartz tuning fork (QTF), a self-sensing sensor that does not require complex optics to detect the motion of a force probe and thus helps to ...
Junghoon Jahng   +2 more
doaj   +2 more sources

Design of a Transformer Oil Viscosity, Density, and Dielectric Constant Simultaneous Measurement System Based on a Quartz Tuning Fork [PDF]

open access: yesSensors
Transformer oil, crucial for transformer and power system safety, demands effective monitoring. Aiming to address the problems of expensive and bulky equipment, poor real-time performance, and single parameter detection of traditional measurement methods,
Hao Yang, Shijie Chen, Jiafeng Ding
doaj   +2 more sources

The Coefficient of the Voltage Induced Frequency Shift Measurement on a Quartz Tuning Fork [PDF]

open access: yesSensors, 2014
We have measured the coefficient of the voltage induced frequency shift (VIFS) of a 32.768 KHz quartz tuning fork. Three vibration modes were studied: one prong oscillating, two prongs oscillating in the same direction, and two prongs oscillating in ...
Yubin Hou, Qingyou Lu
doaj   +2 more sources

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