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Proceedings Paper

Nanoscale patterning of poly (L-lactic acid) films with nanoimprinting methods
Author(s): Akshit Peer; Rabin Dhakal; Rana Biswas; Jaeyoun Kim
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Paper Abstract

Biological applications can benefit from nanoscale texturing of materials for biomedical functions. Texturing of biomaterials can increase the available surface area so that they can be coated with larger doses of therapeutic agents. We demonstrate nano-texturing of poly (L-lactic acid) (PLLA) – a prototypical material commonly used for drug-eluting coronary stents and as a template for cell growth. A master pattern consisting of a periodic array was transferred to a PDMS mold. Drop-casting PLLA achieves the best transfer of patterns, with nanoarrays of holes with pitch ~700 nm. Nanoimprinting the PLLA films results in shallower and less resolved features.

Paper Details

Date Published: 20 August 2015
PDF: 5 pages
Proc. SPIE 9556, Nanoengineering: Fabrication, Properties, Optics, and Devices XII, 95560X (20 August 2015); doi: 10.1117/12.2188888
Show Author Affiliations
Akshit Peer, Iowa State Univ. (United States)
Ames Lab. (United States)
Rabin Dhakal, Iowa State Univ. (United States)
Rana Biswas, Iowa State Univ. (United States)
Ames Lab. (United States)
Jaeyoun Kim, Iowa State Univ. (United States)

Published in SPIE Proceedings Vol. 9556:
Nanoengineering: Fabrication, Properties, Optics, and Devices XII
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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