A hydrogen gas sensor fabricated from polythiophene nanofibers deposited on a 36°YX LiTaO3 layered surface acoustic wave transducer

Laith Al-Mashat; Henry D. Tran; Richard B. Kaner; Rashidah Arsat; Kourosh Kalantar-Zadeh; Wojtek Wlodarski

doi:10.1117/12.810616

30 December 2008 A hydrogen gas sensor fabricated from polythiophene nanofibers deposited on a 36°YX LiTaO₃ layered surface acoustic wave transducer

Laith Al-Mashat, Henry D. Tran, Richard B. Kaner, Rashidah Arsat, Kourosh Kalantar-Zadeh, Wojtek Wlodarski

Author Affiliations +

Proceedings Volume 7268, Smart Structures, Devices, and Systems IV; 72680M (2008) https://doi.org/10.1117/12.810616
Event: SPIE Smart Materials, Nano- and Micro-Smart Systems, 2008, Melbourne, Australia

Abstract

A gas sensor was developed by depositing polythiophene nanofibers on the surface of ZnO/36° YX LiTaO₃ layered surface acoustic wave (SAW) transducer and tested towards different concentrations of hydrogen gas in synthetic air. Polythiophene nanofibers were synthesized by using a template-free method through the introduction of an initiator into the reaction mixture of a rapidly mixed reaction between the monomer (thiophene) and the oxidant. The yield of the reaction was characterized using scanning electron microscopy (SEM) as well as Ultraviolet-visible (UV-vis) and Fourier Transform Infrared (FTIR) spectroscopies. The frequency shift due to the sensor response was ~17 kHz towards 1% of H2. All tests were conducted at room temperature. The sensor performance was assessed over a two day period and a high degree of repeatability was obtained.

Citation Download Citation

Laith Al-Mashat, Henry D. Tran, Richard B. Kaner, Rashidah Arsat, Kourosh Kalantar-Zadeh, and Wojtek Wlodarski "A hydrogen gas sensor fabricated from polythiophene nanofibers deposited on a 36°YX LiTaO₃ layered surface acoustic wave transducer", Proc. SPIE 7268, Smart Structures, Devices, and Systems IV, 72680M (30 December 2008); https://doi.org/10.1117/12.810616

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