Fast two-dimensional ferritin crystal formation realized by mutant ferritin and poly(ethylene glycol) modified SiO 2 substrate

Rikako Tsukamoto, Makoto Igarashi, Seiji Samukawa, Ichiro Yamashita

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The adsorption behavior of mutant ferritins, which have 24 carbonaceous material binding peptides, onto a polymer-coated SiO 2 substrate was studied. A SiO 2 surface was modified by poly(L-lysine) (PLL) and poly(ethylene glycol) (PEG) and the spin-coating technique was used. The state of the ferritin array on PLL-coated SiO 2 was random adsorption, however, many adjacent domains of hexagonal close-packed ferritin arrays about 100-200nm in diameter were formed on PEG-coated SiO 2. PEG and the protein portion of ferritin were removed by heat treatment. The fabricated dispersed hexagonal close packed nanodot arrays on SiO 2 substrates can be applied to semiconductor devices.

Original languageEnglish
Article number065201
JournalApplied Physics Express
Volume5
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

ASJC Scopus subject areas

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

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