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Sensitivity enhancement and temperature compatibility of graphene piezoresistive MEMS pressure sensor

  • Meetu Nag
  • Jaideep Singh
  • Ajay Kumar
  • P. A. Alvi
  • Kulwant SinghEmail author
Technical Paper
  • 6 Downloads

Abstract

MEMS pressure sensor has shown a remarkable change in revenue collection during the year 2018. Due to recent growth in smart microsystem technology for automation systems, demand has grown substantially for sensors. High sensitivity, flexibility, miniaturization and bulk production are some of the key factors of a pressure sensor in achieving new heights in the MEMS market. In this paper, Graphene piezo resistive material has been analysed for pressure sensing elements and compared with Polysilicon in terms of sensitivity and sensor performance degradation at different temperature. MEMS pressure sensors using Polysilicon and Graphene piezo resistive materials were simulated on silicon (100) substrate by COMSOL Multiphysics 5.3a version. The simulation result shows that at room temperature polysilicon pressure sensor performs well with pressure sensitivity of 3.81 mV/psi as well as it is found that graphene pressure sensor also shows better results at room temperature showing a pressure sensitivity of 3.98 mV/psi. As on frequently increasing the temperature it is noticed that polysilicon pressure sensitivity degrades with a factor of 0.64 mV/psi. However, graphene pressure sensor shows very less variation in sensitivity at higher temperature. Although it shows a small increment of 0.02 mV/psi in the pressure sensitivity. This analysis opens the path to utilise the graphene pressure sensor at high temperature.

Notes

Acknowledgements

The Dean R & I, Prof. H. Ravishankar Kamath, Director SEEC, Prof. S.N. Sharan and Director SAMM, Prof. G. L. Sharma are thanked for their constant support and encouragement and first author (Meetu Nag) would like to thank MUJ administration for the financial support in the form of TAship. Additionally, sincere gratitude is extended to the School of Automobile, Mechanical, and Mechatronics (SAMM) of Manipal University Jaipur for providing us access to the COMSOL Multiphysics 5.3a version software as well as their labs for our simulation work.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Mechatronics EngineeringManipal University JaipurJaipurIndia
  2. 2.Department of Electronics and Communication EngineeringManipal University JaipurJaipurIndia
  3. 3.Department of PhysicsBanasthali VidyapithBanasthaliIndia

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