Fabrication of Highly Sensitive Piezocapacitive Pressure Sensors using a Simple and Inexpensive Home Milk Frother
- Authors
- Jang, Yunseok; Jo, Jeongdai; Woo, Kyoohee; Lee, Seung-Hyun; Kwon, Sin; Kim, Hyunchang; Lee, Hwa Sung
- Issue Date
- Jan-2019
- Publisher
- American Physical Society
- Citation
- Physical Review Applied, v.11, no.1, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- Physical Review Applied
- Volume
- 11
- Number
- 1
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/3574
- DOI
- 10.1103/PhysRevApplied.11.014037
- Abstract
- To improve the sensitivity of piezocapacitive pressure sensors, the thickness of the dielectric layer must vary with exposure to a weak force, and the mechanical modulus must be low. We propose a simple method for trapping air bubbles in an elastomer to reduce the modulus of the elastomer. The sensitivity of the pressure sensors fabricated from the air bubble-trapped elastomer is approximately 10 times better than that of a pressure sensor without air bubbles. The pressure sensor with air bubbles has a very high linear response to external pressure changes. We also demonstrate that the pressure sensor fabricated from the air bubble-trapped elastomer can detect the dynamic loading and unloading pressure of a small Lego toy and a small M6 bolt. These results show that our pressure sensor based on the air bubble-trapped elastomer can be used to detect applied pressures or contact forces of electronic skin (e-skin).
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
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