Journal
MRS BULLETIN
Volume 37, Issue 9, Pages 847-854Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/mrs.2012.184
Keywords
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Funding
- ARO [W911NF-09-2-0065, W911NF-11-1-0171]
- NSF [CBET-1066898]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1200241] Funding Source: National Science Foundation
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [1306179] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1308396] Funding Source: National Science Foundation
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Self-folding of thin films is a more deterministic form of self-assembly wherein structures curve or fold up either spontaneously on release from the substrate or in response to specific stimuli. From an intellectual standpoint, the study of the self-folding of thin films at small size scales is motivated by the observation that a large number of naturally occurring materials such as leaves and tissues show curved, wrinkled, or folded micro-and nanoscale geometries. From a technological standpoint, such a self-assembly methodology is important since it can be used to transform the precision of existing planar patterning methods, such as electron-beam lithography, to the third dimension. Also, the self-folding of graphene promises a means to create a variety of three-dimensional carbon-based micro-and nanostructures. Finally, stimuli responsive self-folding can be used to realize chemomechanical and tether-free actuation at small size scales. Here, we review theoretical and experimental aspects of the self-folding of metallic, semiconducting, and polymeric films.
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