Fluorescence Probes in Polymers and Liquid Crystals: Complex Macromolecular Chain Dynamics (Proposal from the Far East)

Ushiki, Hideharu

doi:10.1007/978-3-642-59903-3_14

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…The programs for graphical analysis and curve fitting were developed using Delphi 3.1 (Borland Co., Ltd.). Various fitting functions can be estimated for all data curves by the nonlinear-least-squares method based on the quasi-Marquardt algorithm using PLASMA software 12 , 13 . Calculations were carried out on a personal computer (SF SV2408/B4; Microsoft Windows 2000).…”

Section: Methodsmentioning

confidence: 99%

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. I: Nucleation and growth model

et al. 2012

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The contraction process of living Vorticella sp. has been investigated by image processing using a high-speed video camera. In order to express the temporal change in the stalk length resulting from the contraction, a damped spring model and a nucleation and growth model are applied. A double exponential is deduced from a conventional damped spring model, while a stretched exponential is newly proposed from a nucleation and growth model. The stretched exponential function is more suitable for the curve fitting and suggests a more particular contraction mechanism in which the contraction of the stalk begins near the cell body and spreads downwards along the stalk. The index value of the stretched exponential is evaluated in the range from 1 to 2 in accordance with the model in which the contraction undergoes through nucleation and growth in a one-dimensional space.

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Section: Methodsmentioning

confidence: 99%

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. I: Nucleation and growth model

et al. 2012

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“…The programs for graphical analysis and curve fitting were developed using Delphi 3.1 (Borland Co., Ltd.). Various fitting functions can be estimated for all data curves by the nonlinear least-squares method based on the quasi-Marquardt algorithm using PLASMA software 23 , 24 . Calculations were carried out on a personal computer (SF SV2408/B4; Microsoft Windows 2000).…”

Section: Methodsmentioning

confidence: 99%

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. II: Viscosity effect of several types of polymer additives

et al. 2012

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The contraction process of living Vorticella sp. in polymer solutions with various viscosities has been investigated by image processing using a high-speed video camera. The viscosity of the external fluid ranges from 1 to 5mPa·s for different polymer additives such as hydroxypropyl cellulose, polyethylene oxide, and Ficoll. The temporal change in the contraction length of Vorticella sp. in various macromolecular solutions is fitted well by a stretched exponential function based on the nucleation and growth model. The maximum speed of the contractile process monotonically decreases with an increase in the external viscosity, in accordance with power law behavior. The index values approximate to 0.5 and this suggests that the viscous energy dissipated by the contraction of Vorticella sp. is constant in a macromolecular environment.

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Rotational behavior of the fluorescent probe molecules near the critical point of phase separation

Morita

Ushiki

2003

Physica B: Condensed Matter

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Fluorescence Probes in Polymers and Liquid Crystals: Complex Macromolecular Chain Dynamics (Proposal from the Far East)

Cited by 4 publications

References 44 publications

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. I: Nucleation and growth model

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. I: Nucleation and growth model

Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. II: Viscosity effect of several types of polymer additives

Rotational behavior of the fluorescent probe molecules near the critical point of phase separation

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