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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...
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...
Coagulation01:06

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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...
Solubility03:00

Solubility

Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...

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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 20, 2014

ロックと鍵のコロイド

S Sacanna1, W T M Irvine, P M Chaikin

  • 1Department of Physics, New York University, 4 Washington Place, New York, New York 10003, USA. s.sacanna@nyu.edu

Nature
|March 26, 2010
PubMed
まとめ
この要約は機械生成です。

研究者らは,プログラム可能な自己組み立てのための形状のコロイド粒子を用いた新しいロック&キーシステムを開発しました. この方法は,複雑なコロイド構造や材料を作成するための柔軟な結合を提供します.

さらに関連する動画

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography
10:50

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography

Published on: March 9, 2010

関連する実験動画

Last Updated: Jun 14, 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 20, 2014

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography
10:50

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography

Published on: March 9, 2010

科学分野:

  • 材料科学 材料科学とは
  • コロイド科学 コロイド科学
  • ナノテクノロジー ナノテクノロジー

背景:

  • コロイドセルフアセンブリは,機能的な材料を作成するための経路を提供します.
  • DNAのハイブリデーションは,粒子の組み立てを直接するために使用されています.
  • 既存の方法は,粒子のDNA鎖の特定のプログラミングを必要とする.

研究 の 目的:

  • コロイドセルフアセンブリの代替認識メカニズムを実証する.
  • 方向性のある組み立てのために補完的な粒子の形を使用する.
  • 調節可能で反転可能な結合相互作用を作成するために.

主な方法:

  • コロイド球を"鍵"として,球状の空洞を持つ粒子を"錠"として使用しています.
  • 自発的および可逆的結合のための枯渇相互作用を利用する.
  • 鍵粒子と鍵穴のサイズマッチングを通じて結合特異性を制御する.

主要な成果:

  • サイズ互換性に基づく特定のロック&キー結合が実証されています.
  • 溶液の組成と温度を調整することによって,調節可能な結合強さを達成します.
  • 柔軟な二重性,三重性,四重性コロイド分子,および複雑なポリマーを成功裏に生産しました.

結論:

  • ロック&キーメカニズムは,コロイドの自己組み立てのためのプログラム可能な経路を提供します.
  • このアプローチにより,柔軟な結合を持つ新しい複合構造を作成できます.
  • この方法は,指向型コロイドアセンブリにおける広範な応用が期待されます.