| Abstract
| - A technique for micropatterning of proteins on a nonplanar surface to improve the coverage andfunctionality of biomolecules is demonstrated. A nonplanar microstructure is created by the self-assemblyof polystyrene microspheres into an array of microwells on a silicon wafer to allow the integration of anonplanar spot on a planar chip. After the microspheres were deposited into the microwells, they wereconjugated with proteins. The curve surfaces of the microspheres present more surface area for attachingbiomolecules which will increase the density of biomolecules and, hence, the sensitivity for detection.Moreover, proteins immobilized on a curved surface can retain their native structures and function betterthan on a planar surface because of a smaller area of interaction between the protein and the substrate.Patterning of biomolecules was tested with two model fluorescent proteins. The results show that precisepatterning of biomolecules on a nonplanar spot can be achieved with this technique.
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