Surface structural comparison of composite film of bacteriorhodopsin and phosphatidylcholine fabricated on amorphous silicon dioxide, crystal silicon dioxide, and hydrogenated amorphous silicon

Yutaka Tsujiuchi, Keigo Furuya, Jun Matsumoto, Yukinobu Makino, Hiroshi Masumoto, Takashi Goto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A surface structural comparison of composite film of bacteriorhodopsin (BR) and phosphafidylcoline (PC) fabricated on a layered fatty acid film on a substrate of amorphous silicon dioxide (a-SiO2), crystal silicon dioxide (C-SiO2), or hydrogenated amorphous silicon (a-Si:H) was conducted to investigate the effect of substrate structure on the Langmuir-Blodgett (LB) film fabrication of membrane protein by direct force microscopy (DFM) measurement. On the B-SiO2 substrate, a hexagonal crystal structure of BR and PC with a size of 0.5 nm was observed. However, on the C-SiO2 or a-Si:H substrate, the surface structural features of the composite LB films differed from each other on the shape of assemblies in themselves. In spite of the presence of fatty acid layers, the assemby of BR and PC depends on the structure of the bottom substrate.

Original languageEnglish
Article number01AE15
JournalJapanese journal of applied physics
Volume49
Issue number1 Part 2
DOIs
Publication statusPublished - 2010 Apr 19

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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