Microcantilever-Based MEMS Biosensor for Viral Pathogens

Authors

  • Anika Tun Naziba Department of Electrical and Electronic Engineering, American International University-Bangladesh
  • Mahmudul Hoque Mahmud American International University-Bangladesh image/svg+xml
  • Manika Tun Nafisa American International University-Bangladesh image/svg+xml
  • S M Atiqur Rahman BRAC University image/svg+xml
  • Md Tanvir Hasan Jashore University of Science and Technology image/svg+xml
  • Mohammad Nasir Uddin American International University-Bangladesh image/svg+xml

DOI:

https://doi.org/10.53799/xjzz1h42

Keywords:

Microcantilever beam, COVID-19, Micro-Electromechanical System (MEMS), Pull-in voltage, Radio-Frequency (RF), Titanium Gold (Ti-Au)

Abstract

Microcantilever-based MEMS (Micro-Electro-Mechanical Systems) sensors are rapidly emerging as powerful tools for detecting various viral diseases. This proposed study examines the pull-in voltage of different electromagnetic repulsive controlled microcantilever beams while using SARS-CoV-2 as sample. Electrostatic attraction needs a very high actuation voltage (applied voltage) in order to pull the microcantilever. The pull-in voltage is simulated by using the Finite Difference Time Domain (FDTD) method. This simulation results in the displacement of several non-piezoelectric materials in the microcantilever beam, as well as the capacitance for the applied electrostatic actuation voltage. Numerous microcantilever beam materials are compared in terms of pull-in voltage. The analytical data indicate that the pull-in voltage of a Ti-Au (4.978V) microcantilever beam is lower than nickel (6.55V), molybdenum (6.38V) and gold (5.26V) microcantilever beam. Ti-Au is more efficient in the circumstance of the COVID-19 test due to the lower pull-in voltage, high capacity and high sensitivity. Ti-Au is less costly and easier to maintain material.

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Published

31-10-2025

How to Cite

[1]
“Microcantilever-Based MEMS Biosensor for Viral Pathogens”, AJSE, vol. 24, no. 1, pp. 35–42, Oct. 2025, doi: 10.53799/xjzz1h42.

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