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[Soft Matter] Photo-induced structural modification of silk gels containing azobenzene side groups


Azobenzene modification of Bombyx mori silkworm silk creates a photo-responsive ‘azosilk’ biomaterial, allowing for 3D laser patterning. Written regions fluoresce, and become fluid-filled raised ‘micro-blisters’ with a 10-fold photo-softening effect of the modulus. Patterning is facile and versatile, with potential applications as soft tunable materials for dynamic cell guidance and microfluidics.

Michael J. Landry,a Matthew B. Applegate,b Oleksandr S. Bushuyev,a Fiorenzo G. Omenetto,b David L. Kaplan,b Mark Cronin-Golomb*ab and Christopher J. Barrett*a Author affiliations * Corresponding authors a Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A 0B8, Canada E-mail: christopher.barrett@mcgill.ca b Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford 02155, USA E-mail: mark.cronin-golomb@tufts.edu

Link: http://pubs.rsc.org/is/content/articlelanding/2017/sm/c7sm00446j#!divAbstract

#04052017 #MaterialScience #laser #laserpatterning #gel

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