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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/15089

Title: Optical second-harmonic images of sacran megamolecule aggregates
Authors: Zhao, Yue
Khuat, Thi Thu Hien
Mizutani, Goro
Rutt, Harvey N.
Amornwachirabodee, Kittima
Okajima, Maiko
Kaneko, Tatsuo
Keywords: SHG microscopy
coffee ring effect
liquid crystal
femto second laser
Issue Date: 2017-01-04
Publisher: Optical Society of America
Magazine name: Journal of the Optical Society of America A
Volume: 34
Number: 2
Start page: 146
End page: 152
DOI: 10.1364/JOSAA.34.000146
Abstract: We have detected a second-order nonlinear optical response from aggregates of the ampholytic megamolecular polysaccharide sacran extracted from cyanobacterial biomaterials by using optical second harmonic generation(SHG) microscopy. The SHG images of sacran cotton-like lump, fibers, and cast films showed SHG intensity microspots of several tens of micrometers in size. The dependence of the SHG spot intensity on an excitation lightpolarization angle was observed to illustrate sacran molecular orientation in these microdomains. We also observed SHG signals around a special region of the cast film edges of sacran. These results show that sacran megamolecules aggregate in several different ways.
Rights: Copyright (C) 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Yue Zhao, Khuat Thi Thu Hien, Goro Mizutani, Harvey N. Rutt, Kittima Amornwachirabodee, Maiko Okajima, and Tatsuo Kaneko, Journal of the Optical Society of America A, 34(2), 2017, 146-152. http://dx.doi.org/10.1364/JOSAA.34.000146
URI: http://hdl.handle.net/10119/15089
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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