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関連する概念動画

Energy Bands in Solids01:01

Energy Bands in Solids

2.3K
Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
 Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
2.3K
The de Broglie Wavelength02:32

The de Broglie Wavelength

34.3K
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...
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IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration01:16

IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

3.5K
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to...
3.5K
Standing Waves01:17

Standing Waves

5.7K
Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...
5.7K
The Bohr Model02:18

The Bohr Model

82.7K
Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the...
82.7K
Modes of Standing Waves - I01:03

Modes of Standing Waves - I

4.3K
A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
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Updated: Mar 19, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

8.0K

原子限界を超えた固体ハーモニック

Georges Ndabashimiye1,2, Shambhu Ghimire2, Mengxi Wu3

  • 1Department of Applied Physics, Stanford University, Stanford, California 94305, USA.

Nature
|June 10, 2016
PubMed
まとめ
この要約は機械生成です。

固体における高和音生成は,複数の高台を示し,類似の電子穴再衝突機構を示唆し,ガスとは異なる. これは,固体状態アット秒パルス生成と軌道トモグラフィーの可能性を開きます.

さらに関連する動画

Atomically Traceable Nanostructure Fabrication
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Atomically Traceable Nanostructure Fabrication

Published on: July 17, 2015

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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

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関連する実験動画

Last Updated: Mar 19, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

8.0K
Atomically Traceable Nanostructure Fabrication
12:35

Atomically Traceable Nanostructure Fabrication

Published on: July 17, 2015

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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

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科学分野:

  • 固体物理学
  • 量子光学
  • 非線形光学

背景:

  • 強いフィールドのレーザー刺激は,固体における非線形電子と光学的振る舞いを誘導する.
  • 固体における高調和生成 (HHG) は真空紫外線と極紫外線領域に広がる.
  • 固体と原子ガスの間のHHGメカニズムにおける根本的な違いが議論されている.

研究 の 目的:

  • アルゴンとクリプトンの固体とガス相を直接比較する.
  • 固体 HHG の高密度と周期性の役割を調査する.
  • 固体 HHG の基礎にある顕微鏡のメカニズムを明確にします.

主な方法:

  • 高貴ガス (アルゴン,クリプトン) の固体とガス相におけるHHGの実験的比較
  • ハーモニック生成スペクトルの測定
  • レーザーの円性によるハーモニック・イェンジメントの分析

主要な成果:

  • 固体HHGスペクトルは,原子限界を超えて広がる複数の高原を示しています.
  • 複数のプラトウは,複数の単粒子のバンドを含む強いインターバンドカップリングを示します.
  • 固体とガスのHHG出力は,レーザー円性に類似しており,電子穴再衝突を示唆しています.

結論:

  • 高貴ガス固体は,HHGにおける密度と周期性の効果を研究するためのユニークな媒介を提供します.
  • 電子穴再衝突は固体 HHG で有意である.
  • ポラライゼーションゲーティングや軌道トモグラフィーのようなガス相技術は固体に適用できる.