A conventional route to scalable morphology-controlled regular structures and their superhydrophobic/hydrophilic properties for biochips application

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We use a conventional and straightforward route to fabricate scalable morphology-controlled regular structures. This route is based on the etching of PDMS microlens array in CF(4) and CF(4)/O(2) plasma. PDMS microlens array can be changed to regularly isolated microdot structures array in CF(4) plasma. Microbowl shaped structures array can be reached in CF(4)/O(2) plasma. Moreover, a set of structures after CF(4) plasma treatment display superhydrophobicity, while a set of structures after CF(4)/O(2) plasma treatment present hydrophilicity. DNA molecules can be readily enriched on the hydrophilic surface. We believe that the regular structure array surfaces provide a useful inspiration towards biomolecular detection and transportation in biochips.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2009-06
Language
English
Article Type
Article
Keywords

INDUCED SURFACE MODIFICATION; SUPER-HYDROPHOBIC SURFACES; PROTEIN IMMOBILIZATION; PLASMA TREATMENT; ADHESIVE FORCE; OXYGEN PLASMA; POLY(DIMETHYLSILOXANE); POLYDIMETHYLSILOXANE; WETTABILITY; PDMS

Citation

LAB ON A CHIP, v.9, no.15, pp.2140 - 2144

ISSN
1473-0197
DOI
10.1039/b905804d
URI
http://hdl.handle.net/10203/11717
Appears in Collection
EE-Journal Papers(저널논문)
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