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関連する概念動画

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

41.8K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
41.8K
The de Broglie Wavelength02:32

The de Broglie Wavelength

25.2K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.2K
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

34.3K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
34.3K
The Uncertainty Principle04:08

The Uncertainty Principle

22.9K
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
22.9K
First Law: Particles in Two-dimensional Equilibrium01:18

First Law: Particles in Two-dimensional Equilibrium

5.0K
Recall that a particle in equilibrium is one for which the external forces are balanced. Static equilibrium involves objects at rest, and dynamic equilibrium involves objects in motion without acceleration; but it is important to remember that these conditions are relative. For instance, an object may be at rest when viewed from one frame of reference, but that same object would appear to be in motion when viewed by someone moving at a constant velocity.
Newton's first law tells us about...
5.0K
First Law: Particles in One-dimensional Equilibrium01:10

First Law: Particles in One-dimensional Equilibrium

6.7K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
6.7K

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関連する実験動画

Updated: May 24, 2025

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

3.3K

平らな壁に挟まれて

Michael Saliba1,2, Weiwei Zuo1

  • 1Institute for Photovoltaics, University of Stuttgart, Stuttgart, Germany.

Science (New York, N.Y.)
|March 6, 2025
PubMed
まとめ

二次元材料は効率的な電荷移転のためにペロブスキットの安定性を高めます. この突破は 熱と光に曝されるアプリケーションに 利益をもたらします

科学分野:

  • 材料科学
  • 固体物理学
  • 太陽光発電

背景:

  • ペロブスキート材料は優れた光電子特性を持っていますが,熱や光などの環境ストレス下では不安定です.
  • ペロブスキートの分解は,太陽電池やLEDなどの装置での実用的な使用を制限します.
  • 安定化戦略の開発は,ペロブスキート技術の完全な可能性を実現するために不可欠です.

研究 の 目的:

  • ペロブスキート構造の安定化のために二次元 (2D) 材料の使用を調査する.
  • 熱と光のストレス下での電荷伝送効率に対する2次元材料統合の影響を評価する.
  • ペロブスキート基機器の運用寿命を伸ばすための新しい方法を模索する.

主な方法:

  • 様々な二次元材料 (例えば,グラフェン,移行金属二カルコゲン化物) と統合されたペロブスキート薄膜の合成.
  • X線微分 (XRD) や伝送電子顕微鏡 (TEM) などの技術を用いた材料のインターフェースの特徴化.
  • 制御された熱と光の曝露を含む加速老化条件下での性能試験,電荷キャリアのダイナミクスの監視.

主要な成果:

  • 二次元材料は表面の欠陥を効果的に消化し,ペロブスキットのイオン移動を阻害しました.
  • 2D素材を組み込んだペロブスキート装置は,熱と光の分解に対する安定性が著しく向上した.

さらに関連する動画

Fabrication and Operation of a Nano-Optical Conveyor Belt
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Fabrication and Operation of a Nano-Optical Conveyor Belt

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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.6K

関連する実験動画

Last Updated: May 24, 2025

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

3.3K
Fabrication and Operation of a Nano-Optical Conveyor Belt
11:10

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

11.5K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.6K
  • 安定したペロブスキート構造では,電荷の移転が強化され,再結合率が低下することが観察されました.

    • 結論:

    • 2D材料は頑丈な保護層として機能し,ペロブスキットの動作の安定性を大幅に高めます.
    • 2次元材料の統合は,耐久性があり効率的なペロブスキートベースの光電子機器の開発のための有望な戦略です.
    • このアプローチは,ペロブスキート技術の要求の高いアプリケーションの商業化への道を開きます.