title: Cluster properties of peptides on (100) semiconductor surfaces.
abstract: Peptide adhesion on semiconductor surfaces is quantitatively investigated by atomic force microscopy. The selected peptides are shown to cluster at the surface, with the larger, higher, and softer clusters appearing on the surfaces with lower peptide adhesion. Average cluster diameters vary from 40 nm on GaAs (100) to 300 nm on Si (100). Direct adhesion of the peptides to the surface competes with forming molecular aggregates that offer an overall reduced surface contact.
authors.affiliation: Universität Leipzig, Institut für Experimentelle Physik II, Linnéstrasse 5, 04103 Leipzig, Germany. goede@physik.uni-leipzig.de
authors.forename: Karsten
authors.initials: K
authors.lastname: Goede
authors.forename: Marius
authors.initials: M
authors.lastname: Grundmann
authors.forename: Kai
authors.initials: K
authors.lastname: Holland-Nell
authors.forename: Annette G
authors.initials: AG
authors.lastname: Beck-Sickinger
mesh_terms: D000595:Amino Acid Sequence; D018625:Microscopy, Atomic Force; D008969:Molecular Sequence Data; D010316:Particle Size; D010455:Peptides / Q000737:chemistry*; D012666:Semiconductors; D012825:Silicon / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D010455:Peptides; D012996:Solutions; D014867:Water; D012825:Silicon