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関連する概念動画

Enthalpy of Solution02:39

Enthalpy of Solution

30.1K
There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
30.1K
Solution Formation02:16

Solution Formation

36.9K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
36.9K
General Properties of Solutions02:12

General Properties of Solutions

35.5K
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed. 
35.5K
Ideal Solutions02:24

Ideal Solutions

22.3K
According to Raoult’s law, the partial vapor pressure of a solvent in a solution is equal or identical to the vapor pressure of the pure solvent multiplied by its mole fraction in the solution. However, Raoult's Law is only valid for ideal solutions. For a solution to be ideal, the solvent-solute interaction must be just as strong as a solvent-solvent or solute-solute interaction. This suggests that both the solute and the solvent would use the same amount of energy to escape to the...
22.3K
Solution Equilibrium and Saturation01:59

Solution Equilibrium and Saturation

21.6K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
21.6K
Solution Concentration and Dilution02:59

Solution Concentration and Dilution

126.7K
The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a concentration that is significantly greater than that of all other components. This component is called the solvent and may be viewed as the medium in which the other components are dispersed or dissolved. Solutions in which water is the solvent are, of course, very common on our planet. A solution in which water is the solvent is called an aqueous...
126.7K

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関連する実験動画

Updated: Jan 22, 2026

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
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Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

10.2K

溶液処理可能な超原子薄膜

Jingjing Yang1, Boyuan Zhang1, Alexander D Christodoulides2

  • 1Department of Chemistry , Columbia University , New York , New York 10027 , United States.

Journal of the American Chemical Society
|July 2, 2019
PubMed
まとめ
この要約は機械生成です。

研究者はナノスケールクラスターから新しいイオン超原子物質を開発しました. これらの無形薄膜は 従来の結晶とは異なり 高伝導性や透明性などの 調節可能な性質を備えており 先進的な電子や熱電気装置の道を開いています

さらに関連する動画

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

10.1K
Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition
07:37

Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition

Published on: December 21, 2015

9.7K

関連する実験動画

Last Updated: Jan 22, 2026

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

10.1K
Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition
07:37

Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition

Published on: December 21, 2015

9.7K

科学分野:

  • 材料科学
  • ナノテクノロジー
  • 固体化学

背景:

  • 原子的に精密なナノスケールクラスターは,静電相互作用によって結晶イオン固体を形成することができます.
  • これらのクラスターの結晶化により 秩序ある構造が形成され 潜在的応用が制限されます

研究 の 目的:

  • 柔軟なサイドチェーンを使用して,ナノスケールのクラスターにおける静電相互作用の挫折を調査する.
  • 電子と熱電学的用途のために調整可能な新型無形超原子材料を開発する.

主な方法:

  • 長くて柔軟なサイドチェーンでナノスケールの大群を合成し 静電相互作用を阻害しました
  • これらのクラスターを溶液処理して無形で均質な薄膜にします.
  • 超原子材料の電気的,熱的,光学的性質を特徴づけた.

主要な成果:

  • 結晶化を阻害する無形なイオン超原子物質を 達成した.
  • 非常に高い電気伝導性 (300S/mまで) を有する調節可能な組成物.
  • 観測された超低熱伝導度 (0.05 W/m·K) と高光学透明度 (最大92%).
  • 望ましい,最適化されていないZT値は0.02です.

結論:

  • イオン超原子材料は,クラスター間の相互作用を制御することによって,無形薄膜に処理することができます.
  • これらの無形な材料は,結晶の対称性に見られないユニークな性質を示します.
  • 超原子薄膜は,電子機器や熱電気装置のための有望な新しい材料のクラスです.