Fabrication of Aligned Magnetic Nanoparticles Using Tobamoviruses

We used genetically modified tube-shaped tobamoviruses to produce 3 nm aligned magnetic nanoparticles. Amino acid residues facing the central channel of the virus were modified to increase the number of nucleation sites. Energy dispersive X-ray spectroscopy and superconducting quantum interference d...

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Veröffentlicht in:	Nano letters 2010-03, Vol.10 (3), p.773-776
Hauptverfasser:	Kobayashi, Mime, Seki, Munetoshi, Tabata, Hitoshi, Watanabe, Yuichiro, Yamashita, Ichiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Alignment Amino acids Applied sciences Channels Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Crystallization - methods Electronics Equations of state, phase equilibria, and phase transitions Exact sciences and technology General studies of phase transitions Magnetic properties and materials Magnetics Materials Testing Metal Nanoparticles - chemistry Metal Nanoparticles - ultrastructure Molecular Conformation Molecular electronics, nanoelectronics Nanoparticles Nanostructure Nanotechnology - methods Nucleation Particle Size Physics Residues Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Small particles and nanoscale materials SQUIDs Studies of specific magnetic materials Tobamovirus Tobamovirus - chemistry
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Zusammenfassung:	We used genetically modified tube-shaped tobamoviruses to produce 3 nm aligned magnetic nanoparticles. Amino acid residues facing the central channel of the virus were modified to increase the number of nucleation sites. Energy dispersive X-ray spectroscopy and superconducting quantum interference device analysis suggest that the particles consisted of Co−Pt alloy. The use of tobamovirus mutants is a promising approach to making a variety of components that can be applied to fabricate nanometer-scaled electronic devices.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl902405s