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Inorganics
Volume 12
Issue 8
10.3390/inorganics12080228
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Article

Infrared Light Annealing Effect on Pressure Sensor Fabrication Using Graphene/Polyvinylidene Fluoride Nanocomposite

by
Victor K. Samoei
1,
Katsuhiko Takeda
2,
Keiichiro Sano
2,
Angshuman Bharadwaz
3,
Ambalangodage C. Jayasuriya
3,4 and
Ahalapitiya H. Jayatissa
1,*
1
Nanotechnology and MEMS Laboratory, Department of Mechanical, Industrial, and Manufacturing Engineering (MIME), The University of Toledo, Toledo, OH 43606, USA
2
Kanto Gakuin University, 1-50-1, Mutsuura-Higashi, Kanazawa, Yokohama 236-8503, Japan
3
Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH 43606, USA
4
Department of Orthopaedic Surgery, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43614, USA
*
Author to whom correspondence should be addressed.
Inorganics 2024, 12(8), 228; https://doi.org/10.3390/inorganics12080228
Submission received: 10 July 2024 / Revised: 18 August 2024 / Accepted: 19 August 2024 / Published: 21 August 2024
(This article belongs to the Special Issue Carbon Nanomaterials for Advanced Technology)
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Abstract

This paper reports the designing and testing, as well as the processing and testing, of a flexible piezoresistive sensor for pressure-sensing applications, utilizing a composite film of graphene/polyvinylidene fluoride (Gr/PVDF). Graphene serves as the conductive matrix, while PVDF acts as both the binder and a flexible polymer matrix. The composite film was fabricated using the solution casting technique on a flexible polyethylene substrate. We investigated the impact of post-infrared annealing on the pressure response of the Gr/PVDF films. The experimental results indicated that the films IR-annealed for 2 min exhibited improved pressure sensitivity compared with the as-deposited films. The stability and durability of the sensors were assessed through the application of pressure over more than 1000 cycles. The mechanical properties of the films were examined using a universal tensile testing machine (UTM) for scenarios both with and without infrared light annealing. Raman spectroscopy was employed to analyze the quality and characteristics of the prepared nanocomposites. This study enhances our understanding of the interplay between the Gr/PVDF composite, the IR annealing effect, and the hysteresis effect in the pressure-sensing mechanism, thereby improving the piezoresistance of the Gr/PVDF nanocomposite through the infrared annealing process.
Keywords: flexible pressure sensor; graphene/PVDF nanocomposite; IR annealing flexible pressure sensor; graphene/PVDF nanocomposite; IR annealing

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MDPI and ACS Style

Samoei, V.K.; Takeda, K.; Sano, K.; Bharadwaz, A.; Jayasuriya, A.C.; Jayatissa, A.H. Infrared Light Annealing Effect on Pressure Sensor Fabrication Using Graphene/Polyvinylidene Fluoride Nanocomposite. Inorganics 2024, 12, 228. https://doi.org/10.3390/inorganics12080228

AMA Style

Samoei VK, Takeda K, Sano K, Bharadwaz A, Jayasuriya AC, Jayatissa AH. Infrared Light Annealing Effect on Pressure Sensor Fabrication Using Graphene/Polyvinylidene Fluoride Nanocomposite. Inorganics. 2024; 12(8):228. https://doi.org/10.3390/inorganics12080228

Chicago/Turabian Style

Samoei, Victor K., Katsuhiko Takeda, Keiichiro Sano, Angshuman Bharadwaz, Ambalangodage C. Jayasuriya, and Ahalapitiya H. Jayatissa. 2024. "Infrared Light Annealing Effect on Pressure Sensor Fabrication Using Graphene/Polyvinylidene Fluoride Nanocomposite" Inorganics 12, no. 8: 228. https://doi.org/10.3390/inorganics12080228

APA Style

Samoei, V. K., Takeda, K., Sano, K., Bharadwaz, A., Jayasuriya, A. C., & Jayatissa, A. H. (2024). Infrared Light Annealing Effect on Pressure Sensor Fabrication Using Graphene/Polyvinylidene Fluoride Nanocomposite. Inorganics, 12(8), 228. https://doi.org/10.3390/inorganics12080228

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