A Comparative Study of Compressible and Conductive Vertically Aligned Carbon Nanotube Forest in Different Polymer Matrixes for High-Performance Piezoresistive Force Sensors
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
A Comparative Study of Compressible and Conductive Vertically Aligned Carbon Nanotube Forest in Different Polymer Matrixes for High-Performance Piezoresistive Force Sensors
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| Creator |
Paul, Sharon J.
Sharma, Indu Elizabeth, Indu Gahtori, Bhaskar Manikandan, R. M. Titus, S. Seelakumar Chandra, Prakash Gupta, Bipin Kumar |
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| Subject |
Multidisciplinary
Materials Science Nanoscience/ Nanotechnology Nuclear Science Technology |
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| Description |
In the present scenario, conducting and lightweight flexible polymer nanocomposites rival metallic and inorganic semiconducting materials as highly sensitive piezoresistive force sensors. Herein, we explore the feasibility of vertically aligned carbon nanotube (VACNT) nanocomposites impregnated in different polymer matrixes, envisioned as highly efficient piezoresistors in sensor applications. Polymer nanocomposites are selectively designed and fabricated using three different polymer matrixes, i.e., polydimethylsiloxane (PDMS), polyurethane (PU), and epoxy resins with ideal reinforcement of VACNTs to enhance the thermal stability, conductivity, compressibility, piezoresistivity, and sensitivity of these nanocomposites. To predict the best piezoresistive force sensor, we evaluated the structural, optical, thermal, electrical, mechanical, and piezoresistive properties of the nanocomposites using field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Raman spectroscopy, thermogravimetric analysis (TGA), I-V measurements, compressive stress-strain measurements, hysteresis, sensitivity, and force studies. The results demonstrate that the PDMS/VACNT nanocomposite is capable of sustaining large force with almost complete recovery and enhanced sensitivity, thereby fulfilling the desirable need for a highly efficient conductive and flexible force sensor as compared to PU/VACNT and epoxy/VACNT nanocomposites.
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| Publisher |
American Chemical Society
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| Date |
2020-04-08
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/4548/1/2.pdf
Paul, Sharon J. and Sharma, Indu and Elizabeth, Indu and Gahtori, Bhaskar and Manikandan, R. M. and Titus, S. Seelakumar and Chandra, Prakash and Gupta, Bipin Kumar (2020) A Comparative Study of Compressible and Conductive Vertically Aligned Carbon Nanotube Forest in Different Polymer Matrixes for High-Performance Piezoresistive Force Sensors. ACS Applied Materials and Interfaces, 12 (14). pp. 16946-16958. ISSN 1944-8244 |
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| Relation |
http://npl.csircentral.net/4548/
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