Light-induced dynamically tunable micropatterned surface for the regulation of the endothelial cell alignment
- Author(s): Jiao Wang 1 ; Chengzhen Chu 1 ; Yang He 1 ; Tao Xiang 1 ; Shaobing Zhou 1
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View affiliations
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Affiliations:
1:
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031 , People's Republic of China
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Affiliations:
1:
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031 , People's Republic of China
- Source:
Volume 5, Issue 2,
June
2019,
p.
46 – 51
DOI: 10.1049/bsbt.2019.0001 , Online ISSN 2405-4518
This is an open access article published by the IET and Southwest Jiaotong University under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received
02/01/2019,
Accepted
02/04/2019,
Revised
05/03/2019,
Published
18/04/2019
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/cm2 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.
Inspec keywords: shape memory effects; cellular biophysics; biomedical materials; polymer films; adhesion; photothermal effects; surface topography
Other keywords: PDA; temperature 293 K to 298 K; dynamically changed micropatterns; light-induced dynamically tunable micropatterned surface; near-infrared light; endothelial cell alignment; wavelength 808.0 nm; endothelial cells; polydopamine; adherent cells; surface topography; recovered micropatterns; cross-linked polyethylene glycol-poly(ε-caprolactone); surface temperature; NIR-induced micropatterns; NIR-induced shape memory surfaces; photothermal properties; pressed micropatterns; shape recovery; power density
Subjects: Thin film growth, structure, and epitaxy; Biomedical materials; Cellular biophysics; Other topics in thermal properties of condensed matter; Solid surface structure; Structure of polymers, elastomers, and plastics
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