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Biomimetic Thermal-sensitive Multi-transform Actuator

Title
Biomimetic Thermal-sensitive Multi-transform Actuator
Author
김성민
Keywords
HYDROGEL; TEMPERATURE
Issue Date
2019-05
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 9, Page. 7905
Abstract
Controllable and miniaturised mechanical actuation is one of the main challenges facing various emerging technologies, such as soft robotics, drug delivery systems, and microfluidics. Here we introduce a simple method for constructing actuating devices with programmable complex motions. Thermally responsive hydrogels based on poly(N-isopropylacrylamide) (PNIPAM) and its functionalized derivatives (f-PNI PAM) were used to control the lower critical solution temperature (LCST) or the temperature at which the gel volume changes. Techniques for ultra-violet crosslinking the monomer solutions were developed to generate gel sheets with controllable crosslink density gradients that allowed bending actuation to specified curvatures by heating through the LCST. Simple molding processes were then used to construct multi-transform devices with complex shape changes, including a bioinspired artificial flower that shows blossoming and reverse blossoming with a change in temperature.
URI
https://www.nature.com/articles/s41598-019-44394-xhttp://repository.hanyang.ac.kr/handle/20.500.11754/111201
ISSN
2045-2322
DOI
10.1038/s41598-019-44394-x
Appears in Collections:
COLLEGE OF ART AND PHYSICAL EDUCATION[S](예술·체육대학) > PHYSICAL EDUCATION(체육학과) > Articles
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