Detecting Subtle Vibrations Using Graphene-Based Cellular Elastomers.
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).
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.
M Bulut
MB
Coskun
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.
Ling
L
Qiu
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.
Md Shamsul
MS
Arefin
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.
Adrian
A
Neild
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.
Mehmet
M
Yuce
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.
Dan
D
Li
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.
Tuncay
http://orcid.org/0000-0002-1636-2132
T
Alan
accelerometers; flexible sensors; graphene elastomer; microphones; vibration sensor