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Issue 6, 2011

Surface modification of 2D/3D SU-8 patterns with a swelling–deswelling method

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Abstract

The grafting of PEG onto 2D and 3D SU-8 patterns with a swelling–deswelling approach has been demonstrated. The grafting density can be controlled by varying the amount of solvent used in the swelling. The grafting of the PEG-PPG-PEG block copolymers was confirmed directly with fluorescence characterization, and the control of the grafting density was assessed by performing contact-angle measurements. We also achieved the introduction of DNA molecules onto SU-8 patterns with the same approach. The swelling–deswelling approach is an inert and facile surface modification method, and can be extended to various SU-8 patterns for lab-on-a-chip applications and MEMS.

Graphical abstract: Surface modification of 2D/3D SU-8 patterns with a swelling–deswelling method

Supplementary files

Article information


Submitted
16 Sep 2010
Accepted
20 Dec 2010
First published
01 Feb 2011

Soft Matter, 2011,7, 2989-2993
Article type
Paper

Surface modification of 2D/3D SU-8 patterns with a swelling–deswelling method

H. Kim, J. Kang, W. Jin and J. H. Moon, Soft Matter, 2011, 7, 2989 DOI: 10.1039/C0SM01006E

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