Resistive Hysteresis of Carbon Nanofiber Doped Elastomeric Nanocomposite Polymer

Wednesday, 4 October 2017
Prince George's Exhibit Hall D/E (Gaylord National Resort and Convention Center)


Micropatternable flexible elastomeric nanocomposites find application in sensing biomechanical strains and biopotential signals [1-5]. While many polymers have been used to fabricate flexible MEMS polydimethylsiloxane (PDMS), a silicone based elastomer, has been widely used because of its biocompatibility, low cost, low toxicity, high oxidative and thermal stability, optical transparent, low permeability to water, low electrical conductivity, and ease of micropatterning [6-15]. Previously, we had demonstrated fabrication of various PDMS based micropatternable nanocomposite polymers which are either electrically conductive and magnetic in nature [16-17].

We have developed improved electrically and thermally conducuctive micropatternable PDMS based nanocomposite polymer containg milled carbon fibers, prepared by ultrasonically assisted processing technology. The prepared nanocomposite microstructures show interesting resistance hysteresis loop. This paper also discusses the underlying mechanisims that are responsible for resistance hysteresis loop.


Authors would like to thank Nippon Graphite Fiber Co., Ltd, Japan; for proving milled carbon fiber and technical support for this project.


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  9. Daniel D. Hilbich ; Ajit Khosla ; Bonnie L. Gray ; Lesley Shannon; Bidirectional magnetic microactuators for uTAS. Proc. SPIE 7929, Microfluidics, BioMEMS, and Medical Microsystems IX, 79290H (February 14, 2011); doi:10.1117/12.875788.
  10. D. Hilbich ; A. Rahbar ; A. Khosla ; B. L. Gray; Manipulation of permanent magnetic polymer micro-robots: a new approach towards guided wireless capsule endoscopy. Proc. SPIE 8548, Nanosystems in Engineering and Medicine, 85482I (October 24, 2012); doi:10.1117/12.979250.
  11. A. Khosla ; B. L. Gray; New technologies for large-scale micropatterning of functional nanocomposite polymers. Proc. SPIE 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012, 83440W (April 26, 2012); doi:10.1117/12.915178.
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  13. Gray, B. L., & Khosla, A. (2010). Microfabrication and applications of nanoparticle doped conductive polymers (pp. 227-262). McGraw Hill.
  14. Rahbar, Mona, Sam Seyfollahi, Ajit Khosla, Bonnie L. Gray, and Lesley Shannon. "Fabrication process for electromagnetic actuators compatible with polymer based microfluidic devices." ECS Transactions 41, no. 20 (2012): 7-17. doi: 10.1149/1.3687433
  15. Khosla, Ajit, and Bonnie Lynne Gray. "Electrically conductive, thermosetting elastomeric material and uses therefor." U.S. Patent No. 8,557,385. 15 Oct. 2013.
  16. Chung, D., et al. "Investigations of flexible Ag/AgCl nanocomposite polymer electrodes for suitability in tissue electrical impedance scanning (EIS)." Journal of The Electrochemical Society 161.2 (2014): B3071-B3076. doi: 10.1149/2.018402jes
  17. Khosla, A. & Patel, C. Microsyst Technol (2016) 22: 371. doi:10.1007/s00542-015-2418-6