Inductance-Based Soft and Flexible Pressure Sensors using Various Compositions of Iron Particles

Conference paper

Oliver Ozioko, Hersh, M. and Dahiya, R. 2020. Inductance-Based Soft and Flexible Pressure Sensors using Various Compositions of Iron Particles. 2019 IEEE SENSORS. IEEE. https://doi.org/10.1109/sensors43011.2019.8956646
AuthorsOliver Ozioko, Hersh, M. and Dahiya, R.
TypeConference paper
Abstract

This paper presents inductance-based soft and flexible pressure sensors comprising of a spiral coil made with LIGA process and ferromagnetic elastomer made with different ratios of ecoflex to iron powder (1:1, 2:1, 3:1, 5:1, 1:2, 1:3, 1:5). Seven different sensors were fabricated, and their detailed performance investigated and compared. The results show that increasing the weight percentage of iron particles in ecoflex improved the linearity, response and recovery time and has significant effect on the sensitivity of the resulting sensor. The ratio 1:5, which has the highest iron particle by weight, showed the best performance with sensitivity of ~0.07kPa -1 over a pressure range of 2 - 13.5kPa and a response time of ~90ms. In contrast, 5:1 (which had the least iron particle by weight) had the least sensitivity (~ -0.016kPa -1 ) with a behavior almost similar to bare ecoflex. The presented soft sensors find application in tactile interface for assistive communication devices and for dual tactile sensing and actuation in robotics.

KeywordsSoft Sensor; Tactile Sensor; Inductive Sensor ; Elastomers
Year2020
Conference2019 IEEE SENSORS
PublisherIEEE
ISSN2168-9229
Digital Object Identifier (DOI)https://doi.org/10.1109/sensors43011.2019.8956646
Web address (URL)https://ieeexplore.ieee.org/document/8956646
ISBN978-1-7281-1634-1
Output statusPublished
Publication dates14 Jan 2020
Publication process dates
Deposited20 Jun 2024
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