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Simulation of a High Sensitive Piezoresistive Force Microsensor

Credit to Download: 1 | Page Numbers 12 | Abstract Views: 132
Year: 2017
COI code: ICEEC01_354
Paper Language: English

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Authors Simulation of a High Sensitive Piezoresistive Force Microsensor

  Mehrzad Modarres - Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
  Mohammad Tahmasebipour - Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran- Micro/Nano-Manufacturing Technologies Development Laboratory, Faculty of New sciences & Technologies, University of Tehran, Tehran, Iran

Abstract:

A new design was proposed for a highly sensitive piezoresistive force microsensor capable of measuring forces in the 20-120 nN range. This microsensor included a microcantilever and a number of piezoresistors as well as connections for measuring the force applied to the microsensor. The longitudinal and transverse stresses, voltage changes along the piezoresistors, microsensor resistance changes, and maximum free-end displacement of the microcantilever under different forces were investigated. To optimize the microsensor sensitivity, the corresponding effects of creating a hole at the microcantilever end, reducing the sensor thickness at the connection of the microcantilever to the base, and decreasing the piezoresistor width on the sensitivity of the sensor were examined, while other parameters were kept constant. To investigate the behavior of the optimized microsensor, maximum displacement of the microcantilever, von-Mises stress distribution in the microcantilever, piezoresistor resistance changes under different forces, and resonant mode shapes were simulated through the finite element method. This optimization increased the microsensor sensitivity by almost 57 times from 0.023 Ω/µm in the reference microsensor to 1.31 Ω/µm.

Keywords:

Micro-electromechanical Systems, Force Microsensor, Piezoresistive, Finite Element, Simulation

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COI code: ICEEC01_354

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Modarres, Mehrzad & Mohammad Tahmasebipour, 2017, Simulation of a High Sensitive Piezoresistive Force Microsensor, International Conference on Basic Research in Electrical Engineering, تهران, دانشگاه ابرار, https://www.civilica.com/Paper-ICEEC01-ICEEC01_354.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
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The University/Research Center Information:
Type: state university
Paper No.: 55516
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