Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Z72: Structural and Phononic Properties of 2D Materials
11:30 AM–2:30 PM,
Friday, March 18, 2022
Room: Hyatt Regency Hotel -Jackson Park D
Sponsoring
Unit:
DMP
Chair: Thuc Mai, National Institute of Standards and Technology
Abstract: Z72.00012 : Ultra high pressure sensing using graphene*
2:06 PM–2:18 PM
Presenter:
Abhinaba Sinha
(Indian Inst of Tech-Bombay)
Authors:
Abhinaba Sinha
(Indian Inst of Tech-Bombay)
Pankaj Priyadarshi
(School of Engineering, University of Warwick, Coventry- CV47AL, UK)
Bhaskaran Muralidharan
(Indian Institute of Technology Bombay)
At present, the size of pressure sensors has approached the sub-micron scale, which motivates us, in this work, to explore the pressure-sensing characteristics of graphene in nano-electro-mechanical systems (NEMS). This work uses the thin-film approximation to calculate graphene's critical pressure on various substrates along with the membrane theory to calculate its deflection and pressure sensitivity. This work shows that the graphene’s pressure sensitivity depends only on its radius, while the pressure range depends on its radius and adhesivity. From the results, we infer that graphene can be used to design highly sensitive NEMS pressure sensors with an ultra-high-pressure range (~109 Pa) in the nanoscale regime.
References:
1. Smith, A. D., et al., Nano letters 13.7 (2013): 3237-3242.
2. Koenig, S. P., et al., Nature Nanotechnology 6.9 (2011): 543-546.
*Visvesvaraya Ph.D Scheme of the Ministry of Electronics and Information Technology (MEITY), Government of IndiaScience and Engineering Research Board (SERB), Government of India, Grant No. Grant No. STR/2019/000030Ministry of Human Resource Development (MHRD), Government of India, Grant No. STARS/APR2019/NS/226/FS under the STARS scheme.
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