A Highly Sensitive Capacitive‐Based Soft Pressure Sensor Based on a Conductive Fabric and a Microporous Dielectric Layer
Abstract
In this paper, the design and manufacturing of a highly sensitive capacitive‐based soft pressure sensor for wearable electronics applications are presented. Toward this aim, two types of soft conductive fabrics (knitted and woven), as well as two types of sacrificial particles (sugar granules and salt crystals) to create micropores within the dielectric layer of the capacitive sensor are evaluated, and the combined effects on the sensor's overall performance are assessed. It is found that a combination of the conductive knit electrode and higher dielectric porosity (generated using the larger sugar granules) yields higher sensitivity (121 × 10−4 kPa−1) due to greater compressibility and the formation of air gaps between silicone elastomer and conductive knit electrode among the other design considerations in this study. As a practical demonstration, the capacitive sensor is embedded into a textile glove for grasp motion monitoring during activities of daily living.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 27, 2017
- Source ID
- 10.1002/admt.201700237
Entities
People
- Asli Atalay
- Conor J. Walsh
- Joshua Gafford
- Ozgur Atalay
Organizations
- Defense Advanced Research Projects Agency
- Harvard University
- Istanbul Technical University
- Marmara University
- National Science Foundation