Document Detail

Controlled morphology of thin film silicon integrated with environmentally responsive hydrogels.
MedLine Citation:
PMID:  23617458     Owner:  NLM     Status:  MEDLINE    
Environmentally responsive hydrogels hold multiple important applications. However, the functionality of these materials alone is often limited in comparison to other materials like silicon; thus, there is a need to integrate soft and hard materials for the advancement of environmentally sensitive materials. Here we demonstrate the capability of integrating a thermoresponsive hydrogel, poly(N-isopropylacrylamide), with thin film silicon ribbons, enabling the stiff silicon ribbons to become adaptive and drivable by the soft environmentally sensitive substrate. This integration provides a means of mechanical buckling of the thin silicon film due to changes in environmental stimuli (e.g., temperature, pH). We also investigate how advanced lithographic techniques can be used to generate patterned deformation on the aforementioned integrated structures. Furthermore, we explore multilayer hybrid hydrogel structures formed by the integration of different types of hydrogels that have tunable curvatures under the influence of different stimuli. Silicon thin film integration on such tunable curvature substrates reveal characteristic reversible buckling of the thin film in the presence of multiple stimuli. These results open new opportunities for developing stretchable and intelligent devices for multiple applications.
Prithwish Chatterjee; Yuping Pan; Eric C Stevens; Teng Ma; Hanqing Jiang; Lenore L Dai
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2013-05-15
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  29     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-05-28     Completed Date:  2014-01-14     Revised Date:  2014-01-22    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6495-501     Citation Subset:  IM    
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MeSH Terms
Acrylamides / chemical synthesis,  chemistry*
Hydrogels / chemical synthesis,  chemistry*
Particle Size
Polymers / chemical synthesis,  chemistry*
Silicon / chemistry*
Surface Properties
Reg. No./Substance:
0/Acrylamides; 0/Hydrogels; 0/Polymers; 25189-55-3/poly-N-isopropylacrylamide; Z4152N8IUI/Silicon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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