Crumpled sheets of reduced graphene oxide as a highly sensitive, robust and versatile strain/pressure sensor. Issue 27 (30th June 2017)

• Record Type: Journal Article
• Authors: Kundu, Subhajit; Sriramdas, Rammohan; Rafsanjani Amin, Kazi; Bid, Aveek; Pratap, Rudra; Ravishankar, Narayanan
• Is Part Of: Nanoscale. Volume 9:Issue 27(2017)
• Page Start: 9581
• Page End: 9588
• Publication Date: 2017-06-30
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c7nr02415k
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Taped crumpled rGO can be used to detect a wide variety of strain and pressure with high sensitivity and extreme robustness. 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 (∼10 3 ) 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 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.