関連する実験動画

Updated: Jul 29, 2026

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
12:56

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals

Published on: December 11, 2013

単結晶の星形ナノ結晶とその進化:ナノビルディングブロックの幾何学をプログラミングする

Sang-Min Lee1, Young-wook Jun, Sung-Nam Cho

  • 1Department of Chemistry, Yonsei University, Seoul 120-749, Korea.

Journal of the American Chemical Society
|September 19, 2002
PubMed
まとめ

研究者たちは,鉛硫化物 (PbS) の半導体ナノ結晶の形状を制御する新しい方法を開発しました. この研究は,新しい星状のナノ結晶と,それらの変化を多様なナノ構造に明らかにし,ナノ材料の構築を合わせたものを可能にする.

さらに関連する動画

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles08:39

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

Published on: October 16, 2017

関連する概念動画

Structures of Solids02:22

Structures of Solids

Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent – the...
Unit Cells01:18

Unit Cells

A crystal's internal structure is an orderly array of atoms, ions, or molecules, and the details of this array significantly influence the solid's properties. In a crystal, periodically repeating 'structural motifs' - which could be atoms, molecules, or groups thereof - create a 'space lattice.' This is essentially a three-dimensional, infinite array of points, each surrounded by its neighbors in an identical way, forming the basic structure of the crystal.A 'unit cell' is a theoretical...