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High Piezoresistive Behavior of Vertically Aligned Multi-Wall Carbon Nanotubes Array



Mansouri V1 ; Yadegari A2 ; Rashidi A4 ; Choolaei M4 ; Omidi M2, 3
Authors
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Authors Affiliations
  1. 1. Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical sciences, Tehran, Iran
  2. 2. Research Centre for Medical Nano-Technology and Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical sciences, Tehran, Iran
  3. 3. Department of Tissue Engineering and Regenerative Medicine, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical sciences, Tehran, Iran
  4. 4. Research Institute of Petroleum Industry (RIPI), Tehran, Iran

Source: IIOAB Journal Published:2016

Abstract

Due to their unique electrical, mechanical, and electromechanical properties, vertically aligned carbon nanotube (VACNT) films are promising to be used as piezoresistive based sensors. When VACNT is subjected to mechanical deformations, its resistance changes dramatically. This effect can be utilized for strain sensing, pressure sensing, and also for nanoelectromechanical transducers in micro electromechanical systems (MEMS). In this work, at first a simple method was employed to fabricate VACNT films within the cylindrical pores anodic aluminum oxide (AAO) substrate. Then, electronic and mechanical properties of VACNTs were obtained after removing AAO substrate. Finally, by using VACNT films, which were attached to a paper substrate, a mechanically flexible load sensor was fabricated. Experimental results show that using VACNT film instead of random orientation carbon nanotube film increases gauge factor of the sensor, which is an important designing factor. © 2016, Institute of Integrative Omics and Applied Biotechnology. All rights reserved.