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関連する概念動画

Constant Pressure Calorimetry03:02

Constant Pressure Calorimetry

101.9K
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
101.9K
Vapor Pressure Lowering03:28

Vapor Pressure Lowering

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The equilibrium vapor pressure of a liquid is the pressure exerted by its gaseous phase when vaporization and condensation are occurring at equal rates:
32.6K
Pascal's Law01:04

Pascal's Law

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In 1653, the French philosopher and scientist Blaise Pascal published "Treatise on the Equilibrium of Liquids," which discussed the principles of static fluids. A static fluid is a fluid that is not in motion. When a fluid is not flowing, we say that the fluid is in static equilibrium. If the fluid is water, we say it is in hydrostatic equilibrium. For a fluid in static equilibrium, the net force on any part of the fluid must be zero; otherwise, the fluid will start to flow. Pascal...
12.4K
Pressure and Volume in an Adiabatic Process01:27

Pressure and Volume in an Adiabatic Process

3.7K
Free expansion of a gas is an adiabatic process. However, there are few differences between free expansion and adiabatic expansion. During free expansion, no work is done, and there is no change in internal energy. But, for an adiabatic expansion, work is done, and there is a change in internal energy. During an adiabatic process, the relation between the pressure and volume is obtained from the condition for the adiabatic process, that is,
3.7K
Concept of Pressure at a Point01:15

Concept of Pressure at a Point

950
The concept of pressure at a point in a fluid establishes that pressure within a fluid is uniform in all directions at a specific location. This uniformity occurs because fluid molecules exert force evenly across any point due to their random motion and continuous collisions within the fluid. Pressure at a point is determined by the surrounding fluid molecules and is influenced by factors like depth and density, rather than by shape or orientation.
In a fluid at rest, pressure acts equally in...
950
Static, Stagnation, Dynamic and Total Pressure01:24

Static, Stagnation, Dynamic and Total Pressure

1.9K
The concept of static, stagnation, dynamic, and total pressure is fundamental in fluid dynamics, often explained using Bernoulli's equation:
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Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Synthesis and Microdiffraction at Extreme Pressures and Temperatures

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テラパスカルの静的圧力での材料合成

Leonid Dubrovinsky1, Saiana Khandarkhaeva2,3, Timofey Fedotenko4

  • 1Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany. Leonid.Dubrovinsky@uni-bayreuth.de.

Nature
|May 13, 2022
PubMed
まとめ
この要約は機械生成です。

科学者は,極端な材料の合成と分析のための新しいテラパスカル方式を開発しました. この技術により,巨大圧力下でのレニウム窒素 (Re7N3) の生成と特徴づけが可能になった.

さらに関連する動画

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

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関連する実験動画

Last Updated: Apr 7, 2026

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Published on: October 7, 2013

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High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

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科学分野:

  • 材料科学
  • 高圧物理学
  • 固体化学

背景:

  • 理論的なモデルは 物質の特性を予測します 物質の特性を予測します
  • 200ギガパスカル (GPa) 以上の材料の合成と分析は,実験の複雑さと現地方法の欠如のために困難です.

研究 の 目的:

  • レーザー加熱と組み合わせたテラパスカル (TPa) 体制での静的圧縮実験のための方法論を開発する.
  • 以前は入手不可能だった 極限条件下での新材料の合成と特徴付け

主な方法:

  • レーザーで加熱された2段階のダイヤモンド・アンビル・セルの開発.
  • 静的な圧縮下での材料のインサイト合成 900GPaまで
  • マイクロクリスタルの化学的および構造的特徴化のためのシンクロトロン単結晶X線 difraktion.

主要な成果:

  • 約600GPaと900GPaの静的圧力を達成した.
  • リニウム窒素合金とリニウム窒素フェーズRe7N3を 合成しました
  • Re7N3は極端な圧縮条件下でのみ安定していることが示されています.

結論:

  • 開発された方法論は,高圧科学の限界を押し広げ,TPa体制での実験を可能にします.
  • この進歩により,インサイト結晶学の能力は前例のない圧力レベルまで拡大しました.
  • 極端な条件下でRe7N3の合成は 宇宙の最も激しい環境下で物質を探求するための新しい道を開きます