๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Electro-optic Properties of Colloidal Crystals As Studied by Reflection Spectroscopy

โœ Scribed by Tsuneo Okubo; Akira Tsuchida; Tomofumi Tanahashi; Atsue Iwata

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
104 KB
Volume
207
Category
Article
ISSN
0021-9797

No coin nor oath required. For personal study only.

โœฆ Synopsis

Electro

-optic properties of colloidal crystals of silica spheres in the exhaustively deionized aqueous suspension have been studied by the reflection spectroscopy using a T-type cell. Acoustic shear waves are induced when sine-wave electric fields ranging from 0.01 to 1 Hz are applied. Modulation effects of the crystals on the applied AC fields such as phase delay, change in response intensity, waveform transformation, and harmonics generation are observed. The shear waves propagate outside the electrodes where the electric field is absent. The synchronous fluctuation of the colloidal spheres including expanded electrical double layers in the crystal lattice will be one of the main causes of the electro-optic nature of the crystals.

๐Ÿ“œ SIMILAR VOLUMES

Nonlinear Electro-Optics of Colloidal Cr
Nonlinear Electro-Optics of Colloidal Crystals as Studied by Reflection Spectroscopy
โœ Tsuneo Okubo; Akira Tsuchida; Shinji Okada; Shinnen Kobata ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 183 KB

of visible light (1-4). Since the Bragg condition can be Nonlinear electro-optic behavior of colloidal crystals of colloidal modulated by an external electric field, it is possible to silica spheres is studied by the reflection intensity measurements change the reflection color from the crystals by

Kinetic Analyses of the Colloidal Crysta
Kinetic Analyses of the Colloidal Crystallization of Silica Spheres As Studied by Reflection Spectroscopy
โœ Tsuneo Okubo; Shinji Okada ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 150 KB

ties. When the sample suspensions are carefully deionized Reflection spectroscopy is used in kinetic analyses of the nuclewith resins for more than three weeks, the f c -value becomes ation and growth processes of colloidal crystals of silica spheres quite low, in the range from 0.0001 to 0.0003, as

Kinetic Analyses of Colloidal Crystalliz
Kinetic Analyses of Colloidal Crystallization in a Sinusoidal Electric Field as Studied by Reflection Spectroscopy
โœ Tsuneo Okubo; Hisanori Ishiki ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 118 KB

The effect of a sinusoidal electric field on crystal growth rates in the colloidal crystallization of silica spheres (110 nm in diameter) in exhaustively deionized aqueous suspensions has been studied by reflection spectroscopy. Sphere concentration is 0.0016 in volume fraction. Nucleation time is s

Kinetic Analyses of Colloidal Crystalliz
Kinetic Analyses of Colloidal Crystallization in a Wide Range of Sphere Concentrations as Studied by Reflection Spectroscopy
โœ Tsuneo Okubo; Hisanori Ishiki ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 88 KB

The nucleation and growth rates in the colloidal crystallization of silica spheres (103 nm in diameter) from 0.006 to 0.04 in volume fraction (straight phi) have been measured by reflection spectroscopy. Kinetics of the crystallization has been discussed in a wide sphere concentration range (from st

Kinetic Analyses of Colloidal Crystalliz
Kinetic Analyses of Colloidal Crystallization in Alcoholic Organic Solvents and Their Aqueous Mixtures As Studied by Reflection Spectroscopy
โœ Tsuneo Okubo; Shinji Okada ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 155 KB

Reflection spectroscopy is used for the kinetic analyses of the nucleation and growth process of colloidal crystals of silica spheres (110 nm in diameter) in exhaustively deionized suspensions of purely alcoholic organic solvents (methyl alcohol, ethyl alcohol, and ethylene glycol) and aqueous mixtu