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

Phase Transitions02:31

Phase Transitions

22.1K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
22.1K
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

19.4K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
19.4K
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

14.4K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
14.4K
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

20.3K
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...
20.3K
Phase Diagram01:19

Phase Diagram

6.8K
The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
6.8K
Conservation of Mass in Fixed, Nondeforming Control Volume01:07

Conservation of Mass in Fixed, Nondeforming Control Volume

1.5K
The principle of conservation of mass is fundamental in fluid dynamics and is crucial for analyzing flow within fixed control volumes, such as pipes or ducts. This principle states that the total mass within a control volume remains constant unless altered by the inflow or outflow of mass through the control surfaces. This results in a vital relationship for steady, incompressible flow where the mass entering a system equals the mass leaving it.
In the case of a sewer pipe, which can be modeled...
1.5K

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

Sub-wavelength extreme ultraviolet microscopy reveals domain-wall stability during ultrafast demagnetization.

Nature materials·2026
Same author

Distribution of antiferromagnetic rare-earth domains in multiferroic Dy<sub>0.7</sub>Tb<sub>0.3</sub>FeO<sub>3</sub>.

Communications physics·2025
Same author

Tailored nanophononic wavefield in a patterned bilayer system probed by ultrafast convergent beam electron diffraction.

Structural dynamics (Melville, N.Y.)·2025
Same author

Dynamic control of ferroic domain patterns by thermal quenching.

Nature communications·2025
Same author

Valley-controlled photoswitching of metal-insulator nanotextures.

Nature physics·2025
Same author

Tunable quantum light by modulated free electrons.

Nanophotonics (Berlin, Germany)·2025

関連する実験動画

Updated: Dec 15, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.4K

表面構造のフェーズ移行の一貫した制御

Jan Gerrit Horstmann1, Hannes Böckmann1, Bareld Wit1

  • 14th Physical Institute, Solids and Nanostructures, University of Göttingen, Göttingen, Germany.

Nature
|July 10, 2020
PubMed
まとめ

精密なレーザーパルスを使って 光学的に固体相変化を制御することができました この方法では 振動の相関性を利用して 断熱状態と金属状態を切り替えることで 新しい素材の機能性を 実現できます

さらに関連する動画

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.3K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.7K

関連する実験動画

Last Updated: Dec 15, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.4K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.3K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.7K

科学分野:

  • 凝縮物質物理学
  • 表面科学
  • 物理化学

背景:

  • 活性光学制御は物質の操作に不可欠であり,全光学磁気スイッチングや光誘導相変遷などのアプリケーションを可能にします.
  • 固体における金属から分離器への移行は,電子と格子特性の超高速変化のために,光学操作の重要なターゲットです.
  • これらの移行の効率と値におけるコヘランスの役割は,ほとんど未探究のままである.

研究 の 目的:

  • メタル・インソレーターの構造的相変化に対する一貫した制御を証明する.
  • 準一次元固体表面システムにおけるスイッチング効率に対する振動コヘランスの影響を調査する.

主な方法:

  • 光学スイッチングのためのフェムト秒のダブルパルス刺激スキームを使用した.
  • 構造ダイナミクスを監視するために,超高速低エネルギー電子 difraktion (ULEED) を採用した.
  • 特定の構造的なモードで振動的なコヒーレンスを利用して,相変化を制御する.

主要な成果:

  • ダブルパルス刺激で システムを 安定した金属状態に切り替えた
  • スイッチング効率の遅延依存の振動が観察され,振動コヒーレンスによる制御を示しています.
  • 構造的なフェーズ移行に対する モード選択的な一貫した制御が実証されている.

結論:

  • 一貫した制御は,固体表面システムにおける金属分離器の移行を効果的に制御できます.
  • 振動コヘランスは,光学的に誘導された相変化の効率において重要な役割を果たします.
  • このアプローチは,化学的および物理的な機能をメタステーブルな非均衡状態で切り替えるための新しい可能性を開きます.