Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

5.8K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
5.8K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

23.3K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.3K
Nuclear Stability03:18

Nuclear Stability

20.4K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively...
20.4K
Colloidal precipitates01:09

Colloidal precipitates

5.7K
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...
5.7K
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

3.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
3.5K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

1.7K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
1.7K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Selective Narrowing of the Bonding Modes of Plasmonic Nanoantennas.

ACS applied materials & interfaces·2026
Same author

Printable and Antiferromagnetic Mn(OH)<sub>2</sub>@Te-O Core-Shell Nanosheets.

Chemistry of materials : a publication of the American Chemical Society·2026
Same author

Shadow Montage and Cone-Beam Reconstruction in 4D-STEM Tomography.

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·2026
Same author

The Molecular Basis of Growth Control in Guanine Crystals.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Elucidating Structural Disorder in a Polymeric Layered Material: The Case of Sodium Poly(heptazine imide) Photocatalyst.

Nano letters·2025
Same author

Temperature-Induced Polymorphism of LiSc(SO<sub>4</sub>)<sub>2</sub>·2H<sub>2</sub>O Allows the Control of the Yield of Scandium during Precipitation from Diluted Aqueous Solutions.

Inorganic chemistry·2025

関連する実験動画

Updated: Apr 25, 2026

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
11:54

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Published on: June 25, 2018

9.9K

成長する核殻ナノ粒子の原子規模の進化.

Shai Mangel1, Eran Aronovitch, Andrey N Enyashin

  • 1Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel.

Journal of the American Chemical Society
|August 27, 2014
PubMed
まとめ
この要約は機械生成です。

この研究では,高度な伝送電子顕微鏡 (TEM) を使用して,溶液中のナノ粒子表面の原子規模の成長を視覚化しています. 研究者は直接成長と殻形成を観察し,ナノ粒子の構造的進化の洞察を明らかにしました.

さらに関連する動画

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

17.7K
Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
08:39

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles

Published on: October 16, 2017

10.9K

関連する実験動画

Last Updated: Apr 25, 2026

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
11:54

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Published on: June 25, 2018

9.9K
Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

17.7K
Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
08:39

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles

Published on: October 16, 2017

10.9K

科学分野:

  • 材料化学 材料化学について
  • ナノテクノロジー ナノテクノロジー
  • 表面科学とは,地表科学である.

背景:

  • 固体/溶液界面での原子規模の成長を理解することは,分子および材料化学にとって極めて重要です.
  • 溶液中のナノ粒子表面の化学を研究することは,大きな課題を提示します.
  • ナノスケールでの成長プロセスの直接的な視覚化は限られています.

研究 の 目的:

  • 非有機ナノ粒子表面での成長過程の原子スケールの解像度を提供する.
  • ナノ粒子殻の形成を直接観察し,分析する.
  • 合成方法と観察された原子構造と欠陥を相関させる.

主な方法:

  • 最先端の偏差修正伝送電子顕微鏡 (TEM) を利用しました.
  • 原子スケールの解像度のための焦点列の再構築を使用しました.
  • カドミウムセレニド (CdSe) のナノ粒子を研究し,硫化カドミウム (CdS) の殻に変換した.

主要な成果:

  • CdSeナノ粒子表面での成長の直接的,原子規模の観察を達成しました.
  • CdSeコア上のCdS殻の形成過程を明らかにした.
  • CdSeコア内の堆積欠陥などの格子障害を特定し,マッピングし,解熱中にそれらの除去を観察しました.

結論:

  • 開発された戦略は,ナノ粒子の成長と溶液中の構造的進化の直接的,原子規模の監視を可能にします.
  • 欠陥のダイナミクスと,アニリング中の欠陥の軽減に関する洞察が得られました.
  • このアプローチは,無機ナノ構造物の合成を理解し制御するための強力なツールを提供します.