Structural Engineering Approach for Designing Foil-Based Flexible Capacitive Pressure Sensors

Rishabh B. Mishra, Fhad Al-Modaf, Wedyan Babatain, Aftab M. Hussain, Nazek El-Atab*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Structural engineering plays an essential role in designing, improving, and optimizing an electromechanical system, instinctively affecting its performance. In this study, design optimization, finite element analysis, and experimental evaluation of capacitive pressure sensors were conducted. The air pressure sensing application was demonstrated to characterize different sensors, which include a combination of multiple rectangular cantilevers and diaphragms (square and circular-shaped). After the design improvement, we found that the square and circular diaphragms each with two trapezoidal cantilevers exhibited highest sensitivity to air pressure monitoring among the different investigated designs which combine the square and circular diaphragms with cantilevers. These designs were then selected for further analysis for acoustic pressure monitoring. The sensors were fabricated using the do-it-yourself technique with household materials such as post-it paper, posted tape, and foil. Our approach offers an alternative to the conventional cleanroom fabrication technique and uses easily available materials to fabricate affordable sensors. Therefore, this is the first step toward the development of democratized and sustainable electronic devices that are affordable and available to everyone on the internet.

Original languageEnglish (US)
Pages (from-to)11543-11551
Number of pages9
JournalIEEE Sensors Journal
Volume22
Issue number12
DOIs
StatePublished - Jun 15 2022

Keywords

  • acoustic pressure sensing
  • affordable electronics
  • air pressure sensing
  • Capacitive sensing
  • democratized electronics
  • paper electronics
  • structural engineering

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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