Complex dynamic substrate control: dual-tone hydrogel photoresists allow double-dissociation of topography and modulus.
Complex dynamic substrate control: dual-tone hydrogel photoresists allow double-dissociation of topography and modulus.
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DOI:
10.1002/adma.201304591
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发表时间:
2014-03-12
影响因子:
29.4
通讯作者:
Kasko, Andrea M.
中科院分区:
文献类型:
--
作者:
Xue, Changying;Wong, Darice Y.;Kasko, Andrea M.
关键词:
Hydrogels are widely utilized as artificial extracellular matrices, but current materials are unable to completely recapitulate the geometric, mechanical and dynamic characteristics of natural tissues. Here, we report an approach to dynamically tune both topography and elasticity in a single photoresponsive hydrogel substrate. Upon exposure to spatially controlled doses of light, a topographically and mechanically micropatterned surface forms. Atomic force microscopy was used to investigate changes in topographical feature size and elastic moduli of the hydrogel surface as a function of irradiation time and wavelength. These photodegradable hydrogels can act as both positive and pseudo-negative photoresists, depending on exposure time and wavelength. By carefully controlling the aspect ratio (surface area to depth) of micropatterned features, unique swelling-induced ordered microstructures can be formed on the surface. These dual-tone hydrogel photoresists therefore allow dynamic tunability in both topography and elasticity, enabling the fabrication of complex and anisotropic biomaterials.
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DOI:
10.1083/jcb.201108062
发表时间:
2012-04-30
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kim DH;Provenzano PP;Smith CL;Levchenko A
通讯作者:
Levchenko A
影响因子:
14
作者:
Bryant, Stephanie J.;Cuy, Janet L.;Ratner, Buddy D.
通讯作者:
Ratner, Buddy D.
影响因子:
14
作者:
Kloxin, April M.;Benton, Julie A.;Anseth, Kristi S.
通讯作者:
Anseth, Kristi S.
DOI:
10.1126/science.1191035
发表时间:
2010-08-27
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gilbert PM;Havenstrite KL;Magnusson KE;Sacco A;Leonardi NA;Kraft P;Nguyen NK;Thrun S;Lutolf MP;Blau HM
通讯作者:
Blau HM
影响因子:
29.4
作者:
Kim, Deok-Ho;Lee, Hyojin;Levchenko, Andre
通讯作者:
Levchenko, Andre