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Crumpled Sheets of Reduced Graphene Oxide as a Highly Sensitive, Robust and Versatile Strain Sensor

Abstract

Sensing of mechanical stimuli forms an important communication pathway between humans/environment and machines. The progress in such sensing technology has possible impacts on functioning of automated systems, human machine interfacing, health-care monitoring, prosthetics and safety systems. The challenges in this field range from attaining high sensitivity to extreme robustness. In this article, sensing of complex mechanical stimuli with a patch of taped crumpled reduced graphene oxide (rGO) has been reported which can typically be assembled in household conditions. The ability of this sensor to detect a wide variety of pressure and strain in conventional day-to-day applications has been demonstrated. Extremely high gauge factor (~103) at ultralow strains (~10-4) with fast response times (<20.4 ms) could be achieved with such sensors. Pressure resulting from a gentle touch to over human body weight could be sensed successfully. The capability of the sensor to respond under a variety of environments could be exploited in detection of water and air pressure both below and above atmospheric, with a single device.

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Publication details

The article was received on 05 Apr 2017, accepted on 08 Jun 2017 and first published on 09 Jun 2017


Article type: Paper
DOI: 10.1039/C7NR02415K
Citation: Nanoscale, 2017, Accepted Manuscript
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    Crumpled Sheets of Reduced Graphene Oxide as a Highly Sensitive, Robust and Versatile Strain Sensor

    S. Kundu, S. Rammohan, K. A. Rafsanjani, A. Bid, R. Pratap and R. Narayanan, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR02415K

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