Detecting Subtle Vibrations Using Graphene-Based Cellular Elastomers

M Bulut Coskun; Ling Qiu; Md Shamsul Arefin; Adrian Neild; Mehmet Yuce; Dan Li; Tuncay Alan

doi:10.1021/acsami.7b01207

Detecting Subtle Vibrations Using Graphene-Based Cellular Elastomers

ACS Appl Mater Interfaces. 2017 Apr 5;9(13):11345-11349. doi: 10.1021/acsami.7b01207. Epub 2017 Mar 27.

Authors

M Bulut Coskun¹, Ling Qiu¹, Md Shamsul Arefin¹, Adrian Neild¹, Mehmet Yuce¹, Dan Li¹, Tuncay Alan¹

Affiliation

¹ Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, §Department of Materials Science and Engineering, and ⊥Biomedical Integrated Circuits and Sensors Department of Electrical and Computer Engineering, Monash University , Melbourne, Victoria 3800, Australia.

PMID: 28332815
DOI: 10.1021/acsami.7b01207

Abstract

Ultralight graphene elastomer-based flexible sensors are developed to detect subtle vibrations within a broad frequency range. The same device can be employed as an accelerometer, tested within the experimental bandwidth of 20-300 Hz as well as a microphone, monitoring sound pressures from 300 to 20 000 Hz. The sensing element does not contain any metal parts, making them undetectable by external sources and can provide an acceleration sensitivity of 2.6 mV/g, which is higher than or comparable to those of rigid Si-based piezoresistive microelectromechanical systems (MEMS).

Keywords: accelerometers; flexible sensors; graphene elastomer; microphones; vibration sensor.