| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Dynamic Reversible Wrinkles Enabled by Multiple Stimuli on Polymeric Bilayer System |
| 초록 |
Reversible wrinkling is a facile way to manipulate physical properties of a heterogeneous bilayer system of surfaces by applying strain. Here, we used poly(dimethylsiloxane) (PDMS, E= 1.02 MPa) and polyacrylonitrile (PAN, E =250 GPa) bilayer as a soft substrate and a stiff top layer, respectively. Once the stiff thin PAN layer is thermally annealed on soft PDMS substrate, the wrinkles are formed over the entire surface due to different thermal expansion of layers Moderate heating and IR can form reversible wrinkles by regulating the applied strain thermally triggered. The liquid metal (LM) particles dispersed PDMS substrate is used to rapidly actuate reversible wrinkles by enhancing thermal conductivity. We also present a facile strategy to localize rapidly reversible surface wrinkles by utilizing Joule heating through the LM wire patterned in PDMS substrate. This approach to reversible wrinkles may use for smart surfaces with tunable wettability, optical transparency, and adhesion. |
| 저자 |
위유문, 김시연, 김시현, 홍경민, 천진위, 박성준
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| 소속 |
전북대 |
| 키워드 |
Reversible wrinkles; Lquid metal; Smart surfaces; Localized wrinkles
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| E-Mail |
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