Fabrication of an imperceptible liquid metal electrode for triboelectric nanogenerator based on gallium alloys by contact printing
- Authors
- Kim, Jong Hyeok; Seo, Soonmin
- Issue Date
- 15-Apr-2020
- Publisher
- ELSEVIER
- Keywords
- Liquid Metal (LM); Gallium alloys; Contact printing; LM electrode; Triboelectric nanogenerator; Self-powered electronic
- Citation
- APPLIED SURFACE SCIENCE, v.509
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 509
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/26071
- DOI
- 10.1016/j.apsusc.2020.145353
- ISSN
- 0169-4332
- Abstract
- A simple method for fabricating a liquid metal (LM) pattern on a polydimethylsiloxane substrate through the process of contact printing is introduced in this paper. This material is easily oxidized when it is exposed to air; consequently, it is difficult to manipulate. Contact printing is a fabrication process based on an adhesive force between interfaces. Adhesion is enhanced by forming a new oxide layer; thus, the LM film on a flat mold is transferred to another mold by contact printing. Electrical conductivity of the transferred LM is 1.93 x 10(6)S/m, which is sufficiently high for its usage as an electrode in electric circuits. The resolution of the LM pattern can be controlled at similar to 20 mu m and a complex pattern can be fabricated. Furthermore, the LM is semi-transparent and it is visually imperceptible when observed from a distance. Using the semi-transparent LM electrode, a LM tribo-electric nanogenerator is fabricated. The device demonstrates normal performance as an energy harvesting system; consequently, the LM patterned by contact printing can be applied to wearable self-powered electronics.
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Collections - 바이오나노대학 > 바이오나노학과 > 1. Journal Articles
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