A novel micro-scaled multi-layered optical stress sensor for force sensing

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)768-782
Journal / PublicationJournal of Computational Electronics
Volume22
Issue number2
Online published31 Mar 2023
Publication statusPublished - Apr 2023

Abstract

Miniaturization and integration of sensors on chip has become essential with advancements of artificial intelligence and the Internet of Thing. The size of existing microbend optical stress sensors is too large for integration on a chip, necessitating fundamental change of structural design to achieve micron-sized lithography. In this regard, we demonstrate the design and analysis of a multi-layer microbend optical stress sensor using an advanced Multiphysics simulation model that could be potentially embedded on chips after the experimental tests of the basic microbend optical stress sensor units. The sensor architecture is optimized not just in size, but also the materials in the layers. A well-optimized structure of Glass/Ag/SU8/PDMS architecture delivers best comprehensive performance resulting in a sensitivity in one pitch of 110.42 µm which is 0.00935 N−1 with a linearity of R2 = 0.99868 at a detectable range of 1200 N–2800 N. This work paves way for embedding microbend optical stress sensors on chips to further accelerate sensors for communication and information technologies. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Research Area(s)

  • Linearity, Micro-scaled, Microbend optical stress sensor, Sensitivity, Simulation

Citation Format(s)

A novel micro-scaled multi-layered optical stress sensor for force sensing. / Wang, Weijia; De Souza, Maria Merlyne; Ghannam, Rami et al.
In: Journal of Computational Electronics, Vol. 22, No. 2, 04.2023, p. 768-782.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review