Abstract:
:Microstructures in nature are ultrafine and ordered in biological roles, which have attracted material scientists. Spirulina forms three-dimensional helical microstructure, one of remarkable features in nature beyond our current processing technology such as lithography in terms of mass-productivity and structural multiplicity. Spirulina varies its diameter, helical pitch, and/or length against growing environment. This unique helix is suggestive of a tiny electromagnetic coil, if composed of electro-conductive metal, which brought us main concept of this work. Here, we describe the biotemplating process onto Spirulina surface to fabricate metal microcoils. Structural parameters of the microcoil can be controlled by the cultivation conditions of Spirulina template and also purely one-handed microcoil can be fabricated. A microcoil dispersion sheet exhibited optically active response attributed to structural resonance in terahertz-wave region.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kamata K,Piao Z,Suzuki S,Fujimori T,Tajiri W,Nagai K,Iyoda T,Yamada A,Hayakawa T,Ishiwara M,Horaguchi S,Belay A,Tanaka T,Takano K,Hangyo Mdoi
10.1038/srep04919subject
Has Abstractpub_date
2014-05-12 00:00:00pages
4919issn
2045-2322pii
srep04919journal_volume
4pub_type
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