COLL 358 |
| Jurgen Ruhe, Kirstin Seidel, and Ryan Toomey. Institute for Microsystem Technology (IMTEK), University of Freiburg, George-Kohler-Allee 103, Freiburg, 79110, Germany |
| Ultrathin layers of surface-attached polymer networks provide a robust and scalable pathway towards engineered material interfaces. We present a simple photochemical technique for fabricating microstructured surface-attached polymer networks, enabling the construction of soft, swellable surfaces that offer unique properties. This technique also allows spatial modulation within the network layer, achieved by interlaying networks of varying properties. We show that these surface-attached networks provide a convenient scaffold to host a number of other functionalities. Secondly, they can undergo substantial swelling and contraction in response to a varying environment, making them excellent candidates for “smart” surfaces that respond to specific stimuli. In order to understand and control such stimuli based swelling, we have studied the swelling behavior of such layers in contact with aqueous solutions with multiple-angle null ellipsometry, the latter being an analytical technique that yields information about the thickness and refractive index profile of the swollen layers. |
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“Smart” Polymers on Surfaces and Colloids
2:00 PM-5:20 PM, Tuesday, March 30, 2004 Marriott -- Grand Ballroom J, Oral
Division of Colloid and Surface Chemistry |