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 A Hydrodynamic Model for Measuring Fluid Density and Viscosity by Using Quartz Tuning Forks

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 198 ◽  
Author(s):  
Mi Zhang ◽  
Dehua Chen ◽  
Xiao He ◽  
Xiuming Wang
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Hydrodynamic Model ◽  
Beam Theory ◽  
Cost Effective ◽  
Fluid Density ◽  
Index Method ◽  
Tuning Forks ◽  
Order Of Magnitude ◽  
Quartz Tuning Forks

A hydrodynamic model of using quartz tuning forks (QTFs) for density and viscosity sensing, by measuring the resonance frequency and quality factor, has been established based on the cantilever beam theory applied to the atomic force microscope (AFM). Two examples are presented to verify the usability of this model. Then, the Sobol index method is chosen for explaining quantitatively how the resonance frequency and quality factor of the QTFs are affected by the fluid density and viscosity, respectively. The results show that the relative mean square error in viscosity of the eight solutions evaluated by the hydrodynamic model is reduced by an order of magnitude comparing with Butterworth–Van Dyke equivalent circuit method. When the measured resonance frequency and quality factor of the QTFs vary from 25,800–26,100 Hz and 28–41, the sensitivities of the quality factor affected by the fluid density increase. This model provides an idea for improving the accuracy of fluid component recognition in real time, and lays a foundation for the application of miniaturized and cost-effective downhole fluid density and viscosity sensors.

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%.

scholarly journals Quartz tuning forks resonance frequency matching for laser spectroscopy sensing

2022 ◽  
pp. 100329
Author(s):  
Yufei Ma ◽  
Yinqiu Hu ◽  
Shunda Qiao ◽  
Ziting Lang ◽  
Xiaonan Liu ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Laser Spectroscopy ◽  
Frequency Matching ◽  
Tuning Forks ◽  
Quartz Tuning Forks

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 Quartz Enhanced Photoacoustic Spectroscopy Based Trace Gas Sensors Using Different Quartz Tuning Forks

Sensors ◽  
2015 ◽  
Vol 15 (4) ◽  
pp. 7596-7604 ◽  
Author(s):  
Yufei Ma ◽  
Guang Yu ◽  
Jingbo Zhang ◽  
Xin Yu ◽  
Rui Sun ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Photoacoustic Spectroscopy ◽  
Trace Gas ◽  
Tuning Forks ◽  
Quartz Tuning Forks

scholarly journals Quartz Enhanced Photoacoustic Spectroscopy Based Gas Sensor with a Custom Quartz Tuning Fork

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 735
Author(s):  
Maxime Duquesnoy ◽  
Guillaume Aoust ◽  
Jean-Michel Melkonian ◽  
Raphaël Lévy ◽  
Myriam Raybaut ◽  
...  
Keyword(s):  
Quality Factor ◽  
Penetration Depth ◽  
Gas Sensor ◽  
Photoacoustic Spectroscopy ◽  
Atmospheric Pressure ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Atmospheric Conditions ◽  
Co2 Detection ◽  
Inner Diameter

We have fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency, a larger gap between the prongs and the best quality factor in air at atmospheric conditions ever reported. Acoustic microresonators have been added to the QTF, these were optimized through experiments. We demonstrate a normalized noise equivalent absorption of 3.7 × 10−9 W·cm−1·Hz−1/2 for CO2 detection at atmospheric pressure. Influence of the inner diameter and length of the microresonators has been studied as well as the penetration depth between the QTF prongs.

scholarly journals Quartz Enhanced Photoacoustic Spectroscopy Based on a Custom Quartz Tuning Fork

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1362 ◽  
Author(s):  
Maxime Duquesnoy ◽  
Guillaume Aoust ◽  
Jean-Michel Melkonian ◽  
Raphaël Lévy ◽  
Myriam Raybaut ◽  
...  
Keyword(s):  
Quality Factor ◽  
Penetration Depth ◽  
Photoacoustic Spectroscopy ◽  
Atmospheric Pressure ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Allan Deviation ◽  
Atmospheric Conditions ◽  
Co2 Detection ◽  
Inner Diameter

We have designed and fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency; a larger gap between the prongs; and the best quality factor in air at atmospheric conditions ever reported, to our knowledge. Acoustic microresonators have been added to the QTF in order to enhance the sensor sensitivity. We demonstrate a normalized noise equivalent absorption (NNEA) of 3.7 × 10−9 W.cm−1.Hz−1/2 for CO2 detection at atmospheric pressure. The influence of the inner diameter and length of the microresonators has been studied, as well as the penetration depth between the QTF’s prongs. We investigated the acoustic isolation of our system and measured the Allan deviation of the sensor.

scholarly journals Photoacoustic spectroscopy for gas sensing: A comparison between piezoelectric and interferometric readout in custom quartz tuning forks

2020 ◽  
Vol 17 ◽  
pp. 100155 ◽  
Author(s):  
Stefano Dello Russo ◽  
Sheng Zhou ◽  
Andrea Zifarelli ◽  
Pietro Patimisco ◽  
Angelo Sampaolo ◽  
...  
Keyword(s):  
Photoacoustic Spectroscopy ◽  
Gas Sensing ◽  
Tuning Forks ◽  
Quartz Tuning Forks
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