Journal
LANGMUIR
Volume 22, Issue 19, Pages 8257-8262Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la061602k
Keywords
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Funding
- NIBIB NIH HHS [EB004597, EB004436] Funding Source: Medline
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We report a simple approach to fabricate heterogeneously wetted surfaces which can be used to pattern living cells or biomolecules. An array of pedestals composed of SU-8 was fabricated on a glass surface which was then derivatized with a hydrophobic silane. Upon addition of aqueous solutions to the array, air was trapped within the hydrophobic cavities between the pedestals. The trapped air formed a virtual wall blocking access to these cavities. Cells cultured on the array were forced to grow only on the tops of the pedestals, i.e., the surfaces wetted by aqueous media. The virtual walls were stable during manipulation of the array and over long time periods (months).
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