Rishabh B. Mishra working under the supervision of Prof. Aftab M. Hussain presented a part of his MS thesis work on Structural engineering methods to combine the diaphragm and cantilevers for flexible capacitive pressure sensor at the American Physical Society (APS) March Meeting 2023 held in person and virtually in Las Vegas, Nevada, USA. In person meeting was held from 5 – 10 March and the virtual meeting was held from 20 -23 March.
Research work as explained by the authors Nazek El-Atab, King Abdullah Univ of Sci & Tech (KAUST); Rishabh B Mishra; Fhad Al-Modaf; King Abdullah University of Science and Technology; Wedyan Babatain; MIT Media Lab and Aftab M Hussain:
Structural engineering provides enormous support to the design and analysis of sensitivity enhancement and optimisation of flexible sensors. Including that, the household materials are playing a vital role in democratising electronics/robotics. We have utilised these materials to perform a structural engineering approach to design the flexible capacitive pressure sensor for 1-20 kPa operational range. Different modal analysis with different numbers of cantilevers at the edges of the circular and square shaped diaphragms are presented. Initially, we performed a finite element of analysis of all possible designs. For further sensitivity enhancement, we changed the shape of cantilevers from rectangular to isosceles trapezium and connected the small side of trapezium to the diaphragms. The sensors are fabricated using aluminium coated polyimide foil, double sided tape and posted paper. We have utilized the Versa 2000 carbon dioxide laser to cut these foils and further utilised the DIY-fabrication techniques. We performed the experimental investigation of all the possible designs using air pressure and acoustic pressure monitoring set-up.
APS March Meeting 2023 – https://march.aps.org/
Link to abstract: https://meetings.aps.org/Meeting/MAR23/Session/PP10.6
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March 2023