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Proceedings Paper

Conjugated polymer thin films for dynamic generation of photothermal patterns (Erratum)
Author(s): Hanwhuy Lim; Jongbeom Na; Minsu Han; Beonggwan Kim; Eunkyoung Kim
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Paper Abstract

Publisher’s Note: This paper, originally published on October 13th, was replaced with a corrected/revised version on October 30th. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer Service for assistance.

Thin films of conjugated polymers (CPs) were explored for photothermal pattering of active materials. Due to the semiconductive nature of the CP films, CP film was heated upon NIR exposure via photothermal conversion. Various photothermal patterns were generated from the light pattern generated from POLs. The distance from the POL to the CP substrate was controlled to obtain the target light patterns with the maximum overlap or separation among the diffracted lights. From the light patterns we were able to generate micro thermal patterns to large area thermal pattern, and multiple thermal patterns. The photothermal patterns were used to pattern active layers such as cell sheets which are sensitive to heat. Using thermally responsive interfacing layer (TRI) made of collagen, cell sheets of various shapes were harvested to provide a non-invasive method of live cell sheet preparation. When photothermal CPs were coated on a thermally expandable TRI, the bilayer was folded within few sec of NIR exposure, to generate a complex 3D structure. The degree of folding and reversibility of folding were dependent on the thickness of both CP layer and TRI layer.

Paper Details

Date Published: 12 October 2017
PDF: 6 pages
Proc. SPIE 10355, Nanobiosystems: Processing, Characterization, and Applications X, 103550I (12 October 2017); doi: 10.1117/12.2276518
Show Author Affiliations
Hanwhuy Lim, Yonsei Univ. (Korea, Republic of)
Jongbeom Na, Yonsei Univ. (Korea, Republic of)
Minsu Han, Yonsei Univ. (Korea, Republic of)
Beonggwan Kim, Yonsei Univ. (Korea, Republic of)
Eunkyoung Kim, Yonsei Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 10355:
Nanobiosystems: Processing, Characterization, and Applications X
Norihisa Kobayashi; Fahima Ouchen; Ileana Rau, Editor(s)

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