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Shape changing thin films powered by DNA hybridization

Title
Shape changing thin films powered by DNA hybridization
Authors
Shim, Tae SoupEstephan, Zaki G.Qian, ZhaoxiaProsser, Jacob H.Lee, Su YeonChenoweth, David M.Lee, DaeyeonPark, So-JungCrocker, John C.
Ewha Authors
박소정
SCOPUS Author ID
박소정scopus
Issue Date
2017
Journal Title
NATURE NANOTECHNOLOGY
ISSN
1748-3387JCR Link1748-3395JCR Link
Citation
vol. 12, no. 1, pp. 41 - 47
Publisher
NATURE PUBLISHING GROUP
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Active materials that respond to physical(1-3) and chemical(4-6) stimuli can be used to build dynamic micromachines that lie at the interface between biological systems and engineered devices(7,8). In principle, the specific hybridization of DNA can be used to form a library of independent, chemically driven actuators for use in such microrobotic applications and could lead to device capabilities that are not possible with polymer- or metal-layer-based approaches. Here, we report shape changing films(9) that are powered by DNA strand exchange reactions with two different domains that can respond to distinct chemical signals. The films are formed from DNA-grafted gold nanoparticles(10,11) using a layer-by-layer deposition process. Films consisting of an active and a passive layer show rapid, reversible curling in response to stimulus DNA strands added to solution. Films consisting of two independently addressable active layers display a complex suite of repeatable transformations, involving eight mechanochemical states and incorporating self-righting behaviour.
DOI
10.1038/NNANO.2016.192
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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