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Title: Magneto-optical properties of biogenic photonic crystals in algae

Abstract

In the present study, the effects of strong static magnetic fields on the structural colors of the cell covering crystals on a microalgae, coccolithophore, were investigated. The coccolithophore, Emiliania huxleyi, generates a precise assembly of calcite crystals called coccoliths by biomineralization. The coccoliths attached to the cells exhibited structural colors under side light illumination, and the colors underwent dynamic transitions when the magnetic fields were changed between 0 T and 5 T, probably due to diamagnetically induced changes of their inclination under the magnetic fields. The specific light-scattering property of individual coccoliths separated from the cells was also observed. Light scattering from a condensed suspension of coccoliths drastically decreased when magnetic fields of more than 4 T were applied parallel to the direction of observation. The magnetically aligned cell-covering crystals of the coccolithophores exhibited the properties of both a photonic crystal and a minimum micromirror.

Authors:
 [1]
  1. Chiba University, 1-33 Yayoicho, Inage-ku, 263-8522 Chiba (Japan)
Publication Date:
OSTI Identifier:
22273920
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALGAE; CALCITE; COLOR; CRYSTALS; ILLUMINANCE; LIGHT SCATTERING; MAGNETIC FIELDS; MAGNETO-OPTICAL EFFECTS; SUSPENSIONS; VISIBLE RADIATION

Citation Formats

Iwasaka, M., E-mail: iwasaka-m@umin.ac.jp, Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi 332-0012 Saitama, and Mizukawa, Y. Magneto-optical properties of biogenic photonic crystals in algae. United States: N. p., 2014. Web. doi:10.1063/1.4861556.
Iwasaka, M., E-mail: iwasaka-m@umin.ac.jp, Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi 332-0012 Saitama, & Mizukawa, Y. Magneto-optical properties of biogenic photonic crystals in algae. United States. https://doi.org/10.1063/1.4861556
Iwasaka, M., E-mail: iwasaka-m@umin.ac.jp, Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi 332-0012 Saitama, and Mizukawa, Y. 2014. "Magneto-optical properties of biogenic photonic crystals in algae". United States. https://doi.org/10.1063/1.4861556.
@article{osti_22273920,
title = {Magneto-optical properties of biogenic photonic crystals in algae},
author = {Iwasaka, M., E-mail: iwasaka-m@umin.ac.jp and Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi 332-0012 Saitama and Mizukawa, Y.},
abstractNote = {In the present study, the effects of strong static magnetic fields on the structural colors of the cell covering crystals on a microalgae, coccolithophore, were investigated. The coccolithophore, Emiliania huxleyi, generates a precise assembly of calcite crystals called coccoliths by biomineralization. The coccoliths attached to the cells exhibited structural colors under side light illumination, and the colors underwent dynamic transitions when the magnetic fields were changed between 0 T and 5 T, probably due to diamagnetically induced changes of their inclination under the magnetic fields. The specific light-scattering property of individual coccoliths separated from the cells was also observed. Light scattering from a condensed suspension of coccoliths drastically decreased when magnetic fields of more than 4 T were applied parallel to the direction of observation. The magnetically aligned cell-covering crystals of the coccolithophores exhibited the properties of both a photonic crystal and a minimum micromirror.},
doi = {10.1063/1.4861556},
url = {https://www.osti.gov/biblio/22273920}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 115,
place = {United States},
year = {Wed May 07 00:00:00 EDT 2014},
month = {Wed May 07 00:00:00 EDT 2014}
}