Open AccessLight‐induced dynamically tunable micropatterned surface for the regulation of the endothelial cell alignment
Author(s) -
Wang Jiao,
Chu Chengzhen,
He Yang,
Xiang Tao,
Zhou Shaobing
Publication year - 2019
Publication title -
biosurface and biotribology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.497
H-Index - 4
ISSN - 2405-4518
DOI - 10.1049/bsbt.2019.0001
Subject(s) - materials science , photothermal therapy , photothermal effect , power density , optoelectronics , polyethylene glycol , nanotechnology , surface (topology) , power (physics) , chemical engineering , physics , geometry , mathematics , quantum mechanics , engineering
The surface topography has a great effect on the behaviour of adherent cells. We report an efficient method to prepare shape memory surfaces with dynamically changed micropatterns, which can be induced by near‐infrared (NIR) light by varying the power density. After polydopamine (PDA) was coated on the cross‐linked polyethylene glycol‐poly(ɛ‐caprolactone), the surface temperature increases by 40°C at room temperature when 808 nm light with 1.0 W/cm 2 is used because of the photothermal properties of PDA. This temperature increase is enough for the shape recovery of the pressed micropatterns. The depth of the recovered micropatterns is controllable by adjusting the power density of the 808 nm light. The NIR‐induced micropatterns efficiently regulate the morphology and alignment of endothelial cells. Therefore, NIR‐induced shape memory surfaces have the potential to be used in remote‐controlled devices.