AVS 53rd International Symposium
    Biomaterial Interfaces Tuesday Sessions
       Session BI-TuP

Paper BI-TuP12
Gold Nanoparticle Arrays as a Template for Designing Biosurfaces

Tuesday, November 14, 2006, 6:00 pm, Room 3rd Floor Lobby

Session: Biomaterial Interfaces Poster Session
Presenter: J Hyun, Seoul National University, Korea
Authors: J Hyun, Seoul National University, Korea
J. Jung, Seoul National University, Korea
K. Na, Seoul National University, Korea
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We demonstrate a new, reliable and simple method for fabricating micropatterned nanoparticle arrays that can serve as templates for the surface-initiated polymerization of polymeric brushes, which can be used for the control of bilogical adsorption. As a proof of concept we micropatterned Au nanoparticles (Au-NPs, ~10 nm) onto glass, silicon, polystyrene, and gold surfaces by a simple three-step process: 1) µCP of soluble polymer, 2) incubation with a solution of Au-NPs, and 3) lift-off of the template in a mixture of ethanol and deionized water. Forty-micrometer wide features were successfully fabricated without any significant defects or nonspecific adsorption on the background. To demonstrate the utility of these Au-NP templates, we subsequently polymerized N-isopropylacrylamide (NIPAAm) by surface-initiated polymerization, using a surface-bound initiator.