| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Untethered Light Driven Soft Robots: Molecularly Engineered Photomotility of Liquid Crystal Polymers |
| 초록 |
Liquid crystal material is an alignment controllable substance due to its electromagnetic anisotropy. Azobenzene-functionalized liquid crystal polymers can perform various actuation modes such as bending, twisting and folding upon exposure to actinic light. Recent studies have demonstrated perpetual photomotility toward soft robotics applications. In this work, we varied the spacer length of the azobenzene-derived molecular machine ranging from 2-8 in order to optimize crosslink density with minimized dangling chains for effective stress transfer and photomotility. Photoactive molecular machines were self-assembled along with liquid crystal monomers with twisted nematic boundary conditions followed by photo polymerization in nematic phase. Remarkably, molecularly engineered soft robots demonstrated high mechanical stiffness as well as rapid photomotility with a large helical diameter, resulting in successful climbing of stairs. |
| 저자 |
김재광1, 전지수1, 이종건2, Sivakumar Rajamanickam1, 김윤호3, 조맹효2, 육지호1, 위정재1
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| 소속 |
1인하대, 2서울대, 3한국화학(연) |
| 키워드 |
Soft robots; Liquid crystalline polymer
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| E-Mail |
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