The Hierarchic Microscopic Viscosity of Saccharide Aqueous Solutions : Studies by Femtosecond Pump-probe and Fluorescence Correlation Spectroscopy(Papers presented at the 51^<st> Annual Meeting)
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- NAGASAWA Yutaka
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
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- OGASAWARA Mayu
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
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- KATAYAMA Genki
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
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- NAKAGAWA Yukako
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
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- ITO Syoji
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
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- MIYASAKA Hiroshi
- Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University
Bibliographic Information
- Other Title
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- 糖水溶液のミクロな粘度の階層性 : フェムト秒pump-probe法と蛍光相関顕微分光法による研究(平成17年度 第51回低温低物工学会研究報告)
- 糖水溶液のミクロな粘度の階層性--フェムト秒pump-probe法と蛍光相関顕微分光法による研究
- トウ スイヨウエキ ノ ミクロ ナ ネンド ノ カイソウセイ フェムトビョウ pump probeホウ ト ケイコウ ソウカンケンビブンコウホウ ニ ヨル ケンキュウ
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Abstract
Two types of spectroscopic measurements were carried out to determine the effect of microscopic viscosity on molecular dynamics in saccharide aqueous solutions. Femtosecond pump-probe (PP) spectroscopy was carried out to monitor diffusional phenyl ring rotation of malachite green (MG) molecule which occurred in a time scale of picoseconds. Fluorescence correlation spectroscopy (FCS) was also carried out to monitor the translational diffusion of rhodamine 6G (R6G) molecules in the vicinity of a focusing point of an objective lens, which occurred in a time scale of sub-milliseconds. The PP signal exhibited multi-exponential decay, indicating a microscopic inhomogeneity of the viscosity. On the other hand, time correlation function obtained by FCS measurement exhibited single exponential decay, indicating that the inhomogeneity of the saccharide solution was averaged out and has disappeared in the sub-millisecond time scale.
Journal
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- Cryobiology and Cryotechnology
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Cryobiology and Cryotechnology 51 (2), 155-158, 2005
Japanese Society of Cryobiology and Cryotechnology
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Details 詳細情報について
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- CRID
- 1390282680064258304
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- NII Article ID
- 110004799146
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- NII Book ID
- AN10448734
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- ISSN
- 24241555
- 13407902
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- NDL BIB ID
- 7866467
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed