Specific Adhesion of Peptides on Semiconductor Surfaces in Experiment and Simulation

Details Specific Adhesion of Peptides on Semiconductor Surfaces in Experiment and Simulation Specific Adhesion of Peptides on Semiconductor Surfaces in Experiment and Simulation

2007-10-24

arxiv.org/abs/0710.4562v1

Proceedings of the 28th Conference on the Physics of Semiconductors, AIP Conference Proceedings vol. 893 (AIP, New York, 2007)

Physics

Condensed Matter

Soft Condensed Matter

2 pages, 2 figures

Scientific paper

10.1063/1.2730040

We report on self-assembly, clustering, and conformational phases of peptides on inorganic semiconductor surfaces. The peptide-covered surface fraction can differ by a factor of 25, depending mainly on surface and peptide polarity. Low adhesion induces large and soft clusters, which also have high contact angles to the surface. Direct surface adhesion of a peptide molecule competes with forming molecular aggregates which offer an overall reduced surface contact. Simulating a simple hybrid model yields a pseudophase diagram with a rich, temperature and solvent-quality dependent variety of subphases which are specific to the hydrophobicity and polarity of the considered substrates.

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