Fabrication of hierarchically porous structured PDMS composites and their application as a flexible capacitive pressure sensor
- Title
- Fabrication of hierarchically porous structured PDMS composites and their application as a flexible capacitive pressure sensor
- Author
- 오제훈
- Keywords
- Hierarchically porous polymer composite; Capacitive pressure sensor; Combined template method; Wearable electronics
- Issue Date
- 2021-04
- Publisher
- ELSEVIER SCI LTD
- Citation
- COMPOSITES PART B-ENGINEERING, v. 211, Article no. 108607, 9pp
- Abstract
- Pressure sensors for wearable electronics are mounted on irregular surfaces and exposed to various external stimuli. Therefore, the sensor should have a flexible structure and wide pressure measurement range along with high sensitivity. In this study, we fabricated hierarchically porous structured polydimethylsiloxane (PDMS) composites with a simple and cost-effective method using sugar particles and a water-in-oil emulsion. Hierarchically porous PDMS composites were employed as the dielectric layers of flexible capacitive pressure sensors. The capacitive pressure sensor presents a sensitivity 22.5 times higher (0.18 kPa−1) than the sensors using bulk PDMS with a wide measurement range (0–400 kPa). The finite element analysis was implemented to analyze the non-linearity of sensors by observing the compressive behavior of the PDMS composites. For the practical applications, finger attached-sensor, respiration monitoring system, and sensor array were tested, and the proposed sensors showed sufficient potential for application in wearable electronics.
- URI
- https://www.sciencedirect.com/science/article/pii/S1359836821000044https://repository.hanyang.ac.kr/handle/20.500.11754/166826
- ISSN
- 1359-8368
- DOI
- 10.1016/j.compositesb.2021.108607
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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