Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9952769 | Sensors and Actuators A: Physical | 2018 | 10 Pages |
Abstract
This paper concerns the design, fabrication and characterization of graphite/PDMS sensors for low-force sensing applications. Exploiting the design flexibility of 3D printing, moulds of specific dimensions were prepared onto which graphite powder and PDMS were cast, to develop sensor patches. The sensor patches were highly flexible with repeatable responses to iterative bending cycles. The patches were tested in terms of stretchability, strain and bending-cycle responses. The sensor patches had interdigitated electrodes operating on capacitive sensing, where the effective capacitance changes with an applied force because of changes in their dimensions. Forces ranging from 3.5âmN to 17.5âmN were applied to determine the capability of these sensor patches for low-force sensing applications. The sensor patches had a quick recovery having a sensitivity and SNR per unit force of 0.2542âpFâmNâ1 and 10.86 respectively. The patches were capable of differentiating the forces applied on them, when they were attached to different objects in daily use.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
A. Nag, S. Feng, S.C. Mukhopadhyay, J. Kosel, D. Inglis,