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関連する概念動画

Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Solid–Solid Solutions01:24

Solid–Solid Solutions

The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...

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Updated: Jun 29, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 21, 2014

液晶連続相における相分離からコロイドの順序付け

Loudet1, Barois, Poulin

  • 1Centre de Recherche Paul Pascal/CNRS, Pessac, France.

Nature
|October 18, 2000
PubMed
まとめ
この要約は機械生成です。

液体結晶のバイナリ混合物は,完全な分離ではなく,オーダーされたドロップレットチェーンに自己組織化します. この制御された自己組み立ては,独特の光学およびレオロギー特性を持つ新しい材料の可能性を秘めています.

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Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
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Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

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Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
08:54

Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals

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関連する実験動画

Last Updated: Jun 29, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 21, 2014

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
12:37

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
08:54

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Published on: May 25, 2016

科学分野:

  • マテリアルサイエンス 材料科学
  • ソフトマター物理学 ソフトマター物理学
  • 物理化学 物理化学

背景:

  • バイナリ混合物の相分離は温度に依存し,粒子の形成と粗化につながる.
  • 液晶 (LC) システムは,同otropic マトリックスに分散すると,電気光学特性に興味があります.
  • LC混合物における自己組織化の理解は,高度な材料設計に不可欠です.

研究 の 目的:

  • 同位流体と液晶から成るバイナリ混合物の自己組織化行動を調査する.
  • 単純な相分離を超えて秩序付けられた構造の形成を探求する.
  • これらのシステムにおけるドロップレットサイズと空間的配置を制御する要因を特定する.

主な方法:

  • イソトロプ的流体と液晶の二次混合物の急速冷却.
  • ドロップレット形成,サイズ,空間分布の観察と分析.
  • 液晶相における方向性弾力性と欠陥形成の役割に関する研究.

主要な成果:

  • バイナリ混合物は,単分散のコロイド状滴鎖の高度に秩序付けられた配列に自己組織化します.
  • 完全な相分離が阻害され,分断された散発相の代わりに秩序ある構造が生じます.
  • ドロップレットサイズと組織は,液晶の方向性弾力性と重大な欠陥サイズによって支配されます.

結論:

  • 同型流体と液晶のバイナリ混合物は,オーダーされたコロイドのドロップレットチェーンに自己組織化することができます.
  • この制御された自己組み立ては,調節可能な性質を持つオーダーされた複合材料を設計するための経路を提供します.
  • この発見は,カスタマイズされたレオロギーおよび光学特性を有する高度な材料における潜在的な応用を示唆しています.