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Crumpled sheets of reduced graphene oxide as a highly sensitive, robust and versatile strain/pressure sensor

Kundu, Subhajit and Sriramdas, Rammohan and Amin, Kazi Rafsanjani and Bid, Aveek and Pratap, Rudra and Ravishankar, Narayanan (2017) Crumpled sheets of reduced graphene oxide as a highly sensitive, robust and versatile strain/pressure sensor. In: NANOSCALE, 9 (27). pp. 9581-9588.

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Official URL: http://dx.doi.org/10.1039/c7nr02415k

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 the 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 under household conditions. The ability of this sensor to detect a wide variety of pressures and strains in conventional day-to-day applications has been demonstrated. An extremely high gauge factor (similar to 10(3)) at ultralow strains (similar to 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 in a variety of environments could be exploited in the detection of water and air pressures both below and above atmospheric, with a single device.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 05 Aug 2017 09:42
Last Modified: 05 Aug 2017 09:42
URI: http://eprints.iisc.ac.in/id/eprint/57570

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