Microfabricated Wedge-Shaped Adhesive Array Using Biodegradable and Biocompatible Polymers
- 최초 등록일
- 2014.03.25
- 최종 저작일
- 2012.03
- 4페이지/
MS 워드
- 가격 2,000원
소개글
"A Reversible Wet/Dry Adhesive and Microfabricated Wedge-Shaped Adhesive Array Inspired by Geckos Using Biodegradable and Biocompatible Polymers" 주제의 term paper
목차
1. Introduction
2. Experimental Scheme
3. Results and Discussion
4. Summary
5. References
본문내용
Gecko adhesion has become a paradigmatic example of bio-inspired engineering, yet among the many gecko-like synthetic adhesives (GSAs), truly gecko-like performance remains elusive. Many GSAs have previously demonstrated one or two features of the gecko adhesive. A new wedge-shaped GSA that exhibits several gecko-like properties simultaneously : directional features; zero force at detachment; high ratio of detachment force to preload force; non-adhesive default state; and the ability to maintain performance while sliding, even after thousands of cycles. To widen application area like medical field, we can make wedge-shaped GSA using polymer poly(glycerol-co-sebacate acrylate) which has biodegradable and biocompatible property. However, gecko adhesion is greatly diminished upon full immersion in water. Therefore, wedge-shaped GSA was coated with a thin layer of oxidized dextran (DXT), which has aldehyde functionalities [DXT aldehyde (DXTA)], or catecholic amino acid 3,4-dihydroxy-L-phenylalanine (DOPA). Then, the system maintains its adhesive performance for over thousand contact cycles in both dry and wet environments.
참고 자료
Haeshin Lee; Bruce P.Lee & Phillip B. Messersmith Nature 2007, 448, 338.
Alborz Mahdavi; Lino Ferreira PNAS 2008, 105, 2307.
Aaron Parness; Daniel Soto J. R. Soc. Interface 2009, 6, 1223.
