| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
대학원생 구두발표(영어발표, 발표15분) |
| 제목 |
Thermoresponsive smart colorimetric patches based on the plasmonic nanoparticles-decorated responsive polymer microgels |
| 초록 |
Colorimetric sensors are researched in industrial and medical fields due to the direct and simple detection of external stimuli. Here, we report flexible and thermoresponsive colorimetric patches incorporating plasmonic microgels by decorating gold nanoparticles(AuNPs) on poly(isopropylacrylamide)(PNIPAM) microgels and embedding them in a flexible hydrogel film. The smart colorimetric patches exhibit large and quick extinction peak shifts(176 nm in 1-5 s) due to the thermoresponsive plasmon resonance from individual to coupled AuNPs on PNIPAM microgels. Also, array patches are demonstrated by tuning the transition temperature(25‒40 °C), so that it is possible to visualize the temperature of curved surface with different color pattern in 0.2 °C resolution. For applications, large-area patch(10×4cm2) is available to provide temperature mapping of specific shape, and hand-shaped actuator can show sequential changes of plasmonic colors of finger tips and bending as temperature changes. |
| 저자 |
염정희, 최아영, Ravi Shanker, 김민수, 고현협
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| 소속 |
UNIST |
| 키워드 |
plasmonic nanoparticle; responsive hydrogel; smart patch
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| E-Mail |
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