scholarly journals Dynamic Responses of Electrically Driven Quartz Tuning Fork and qPlus Sensor: A Comprehensive Electromechanical Model for Quartz Tuning Fork

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2686
Author(s):  
Manhee Lee ◽  
Bongsu Kim ◽  
Sangmin An ◽  
Wonho Jhe
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Dynamic Responses ◽  
Peak Amplitude ◽  
Quantitative Prediction ◽  
Dynamic Features ◽  
Electromechanical Model ◽  
Different Characteristics

A quartz tuning fork and its qPlus configuration show different characteristics in their dynamic features, including peak amplitude, resonance frequency, and quality factor. Here, we present an electromechanical model that comprehensively describes the dynamic responses of an electrically driven tuning fork and its qPlus configuration. Based on the model, we theoretically derive and experimentally validate how the peak amplitude, resonance frequency, quality factor, and normalized capacitance are changed when transforming a tuning fork to its qPlus configuration. Furthermore, we introduce two experimentally measurable parameters that are intrinsic for a given tuning fork and not changed by the qPlus configuration. The present model and analysis allow quantitative prediction of the dynamic characteristics in tuning fork and qPlus, and thus could be useful to optimize the sensors’ performance.

scholarly journals Influence of Air Pressure on the Resonance Properties of a T-Shaped Quartz Tuning Fork Coupled with Resonator Tubes

2021 ◽  
Vol 11 (17) ◽  
pp. 7974
Author(s):  
Mariagrazia Olivieri ◽  
Andrea Zifarelli ◽  
Giansergio Menduni ◽  
Michele Di Gioia ◽  
Cristoforo Marzocca ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Theoretical Analysis ◽  
Resonance Frequency ◽  
Quality Factor ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Air Pressure ◽  
Acoustic Coupling ◽  
Air Damping ◽  
Resonance Properties

A theoretical analysis and experimental investigation of the influence of gas pressure on resonance properties, namely, the quality factor and resonance frequency, of a T-shaped quartz tuning fork (QTF) is reported here. Two configurations are considered: a bare QTF, and a QTF coupled with a pair of resonator tubes (spectrophone). In both configurations, the effect of air on resonance frequency due to the additional inertia on prong motion and the influence of air damping on the quality factor, were analysed. By comparing the bare QTF and the spectrophone results, the effect of pressure on the acoustic coupling between the QTF and the tubes was theoretically modelled and then validated. The results show that acoustic coupling is strongly influenced by air pressure, leading to a shift of resonance frequency and a decrease in the quality factor up to 24%.

Research on the influence of transparent vacuum encapsulation quartz tuning fork on the photo-thermoelastic spectroscopy of acetylene

2016 ◽  
Vol 30 (30) ◽  
pp. 1650364 ◽  
Author(s):  
Zhouqiang Zhang ◽  
Shuhai Jia ◽  
Yonglin Wang ◽  
Zhenhua Tang ◽  
Fei Wang
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Tuning Fork ◽  
Detection System ◽  
Quartz Tuning Fork ◽  
Subsequent Research ◽  
First Time

In this paper, a transparent vacuum-encapsulated quartz tuning fork (QTF) is proposed for the first time to improve the quality factor and sensitivity of QTF sensors. Increasing the vacuum considerably improved the quality factor of QTF, and the resonance frequency was also shifted to higher values to 10 Hz. Subsequently, the spectroscopy detection of acetylene gas using an exposed QTF and a transparent vacuum-encapsulated QTF was investigated. The sensitivity of the detection system improved in the presence of the transparent vacuum-sealed QTF. The current findings represent a gateway to subsequent research in photo-thermoelastic spectroscopy.

scholarly journals Influence of Tuning Fork Resonance Properties on Quartz-Enhanced Photoacoustic Spectroscopy Performance

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3825 ◽  
Author(s):  
Huadan Zheng ◽  
Haoyang Lin ◽  
Lei Dong ◽  
Yihua Liu ◽  
Pietro Patimisco ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Photoacoustic Spectroscopy ◽  
Electrical Resistance ◽  
Tuning Fork ◽  
Resonance Frequencies ◽  
Resonance Properties ◽  
Tuning Forks ◽  
Quartz Tuning Forks ◽  
Fundamental Resonance Frequency

A detailed investigation of the influence of quartz tuning forks (QTFs) resonance properties on the performance of quartz-enhanced photoacoustic spectroscopy (QEPAS) exploiting QTFs as acousto-electric transducers is reported. The performance of two commercial QTFs with the same resonance frequency (32.7 KHz) but different geometries and two custom QTFs with lower resonance frequencies (2.9 KHz and 7.2 KHz) were compared and discussed. The results demonstrated that the fundamental resonance frequency as well as the quality factor and the electrical resistance were strongly inter-dependent on the QTF prongs geometry. Even if the resonance frequency was reduced, the quality factor must be kept as high as possible and the electrical resistance as low as possible in order to guarantee high QEPAS performance.

scholarly journals Resonance frequency-retuned quartz tuning fork as a force sensor for noncontact atomic force microscopy

2014 ◽  
Vol 105 (4) ◽  
pp. 043107 ◽  
Author(s):  
Hiroaki Ooe ◽  
Tatsuya Sakuishi ◽  
Makoto Nogami ◽  
Masahiko Tomitori ◽  
Toyoko Arai
Keyword(s):  
Atomic Force Microscopy ◽  
Resonance Frequency ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Force Sensor ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals HCl ppb-level detection based on QEPAS sensor using a low resonance frequency quartz tuning fork

2016 ◽  
Vol 233 ◽  
pp. 388-393 ◽  
Author(s):  
Yufei Ma ◽  
Ying He ◽  
Xin Yu ◽  
Cheng Chen ◽  
Rui Sun ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Qepas Sensor

Optimizing the Quality Factor of Quartz Tuning Fork Force Sensor for Atomic Force Microscopy: Impact of Additional Mass and Mass Rebalance

2017 ◽  
Vol 17 (9) ◽  
pp. 2797-2806 ◽  
Author(s):  
Danish Hussain ◽  
Jianmin Song ◽  
Hao Zhang ◽  
Xianghe Meng ◽  
Wen Yongbing ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Quality Factor ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Force Sensor ◽  
Additional Mass ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Ppb-level detection of ammonia based on QEPAS using a power amplified laser and a low resonance frequency quartz tuning fork

2017 ◽  
Vol 25 (23) ◽  
pp. 29356 ◽  
Author(s):  
Yufei Ma ◽  
Ying He ◽  
Yao Tong ◽  
Xin Yu ◽  
Frank K. Tittel
Keyword(s):  
Resonance Frequency ◽  
Tuning Fork ◽  
Quartz Tuning Fork
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