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Interconnects on elastomers: optimizing for stretchability, speed and layout area

Prasad, Oppili and Jha, Prateek and Pillai, Sreelal and Prasad, Mandya and Amrutur, Bharadwaj and Sambandan, Sanjiv (2017) Interconnects on elastomers: optimizing for stretchability, speed and layout area. In: Flexible and Printed Electronics, 2 (4). ISSN 2058-8585

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Official URL: https://doi.org/10.1088/2058-8585/aa91ba


The design of interconnects on elastomers is of interest in flexible electronics. The geometric design of interconnects must take into account the electrical and mechanical aspects, along with layout area. This work discusses the impact of the geometry of stretchable interconnects on various user specifications, namely layout area, stretchability given by mechanical stiffness coefficient and speed given by electrical impedance. Analytical models have been derived and an optimization methodology is developed to help pick the best design for the given application. The analytical models are corroborated with simulations and experiments. Interconnect designs have been fabricated on a copper-viscoelastic adhesive-elastomer stack architecture, using laser toner-transfer process where the viscoelastic adhesive prevents delamination and in which the process flow is in line with conventional printed circuit board fabrication techniques.

Item Type: Journal Article
Publication: Flexible and Printed Electronics
Publisher: Institute of Physics Publishing
Additional Information: The copyright of this article belongs to the Institute of Physics Publishing.
Keywords: Flexible electronics; Layout area; Meander; Optimization; Polydimethyl siloxane; Routing; Viscoelastic
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Sciences > Robert Bosch Centre for Cyber Physical Systems
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 02 Jun 2022 06:17
Last Modified: 01 Jul 2022 17:38
URI: https://eprints.iisc.ac.in/id/eprint/73054

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