ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Sensing the heavy water concentration in an H2O—D2O mixture by solid—solid phononic crystals |
Mohammadreza Rahimi and Ali Bahrami† |
Optoelectronic and Nanophotonics Research Laboratory(ONRL), Faculty of Electrical Engineering, Sahand University of Technology, Tabriz, Iran |
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Abstract A new method based on phononic crystals is presented to detect the concentration of heavy water (D2O) in an H2O—D2O mixture. Results have been obtained and analyzed in the concentration range of 0%—10% and 90%—100% D2O. A proposed structure of tungsten scatterers in an aluminum host is studied. In order to detect the target material, a cavity region is considered as a sound wave resonator in which the target material with different concentrations of D2O is embedded. By changing the concentration of D2O in the H2O—D2O mixture, the resonance frequency undergoes a frequency shift. Each 1% change in D2O concentration in the H2O—D2O mixture causes a frequency change of about 120 Hz. The finite element method is used as the numerical method to calculate and analyze the natural frequencies and transmission spectra of the proposed sensor. The performance evaluation index shows a high Q factor up to 1475758 and a high sensitivity up to 13075, which are acceptable values for sensing purposes. The other figures of merit related to the detection performance also indicate high-quality performance of the designed sensor.
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Received: 22 July 2023
Revised: 10 November 2023
Accepted manuscript online: 13 November 2023
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PACS:
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43.20.+g
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(General linear acoustics)
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43.40.+s
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(Structural acoustics and vibration)
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43.58.+z
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(Acoustical measurements and instrumentation)
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Corresponding Authors:
Ali Bahrami
E-mail: bahrami@sut.ac.ir
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Cite this article:
Mohammadreza Rahimi and Ali Bahrami Sensing the heavy water concentration in an H2O—D2O mixture by solid—solid phononic crystals 2024 Chin. Phys. B 33 044301
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