関連する実験動画

Updated: Jun 7, 2026

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
08:58

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation

Published on: December 21, 2015

サファイアナノワイヤの蒸気-液体-固体成長における振動的質量輸送

Sang Ho Oh1, Matthew F Chisholm, Yaron Kauffmann

  • 1Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea. shoh@postech.ac.kr

Science (New York, N.Y.)
|October 23, 2010
PubMed
まとめ

サファイアナノワイヤの自己触媒的蒸気-液体-固体 (VLS) 成長は,典型的な液相輸送ではなく,界面酸素拡散によって発生します. ナノワイヤリムでの振動反応は,層ごとに層ずつ成長する.

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Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication08:50

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Published on: November 28, 2017

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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...
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Phase Transitions: Vaporization and Condensation

The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
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Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...