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関連する概念動画

Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

470
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
470
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.0K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.0K
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

18.0K
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
18.0K
Group Polarization01:01

Group Polarization

35.4K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
35.4K
Induced Electric Dipoles01:28

Induced Electric Dipoles

4.4K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.4K
Chirality02:25

Chirality

25.2K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
25.2K

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関連する実験動画

Updated: Sep 10, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

17.1K

ポラライゼーションファティコン:自己脱焦カーレゾナーにおけるキラル局所構造

Erwan Lucas1, Gang Xu2, Pengxiang Wang2

  • 1Université Bourgogne Europe, Laboratoire Interdisciplinaire Carnot de Bourgogne ICB UMR 6303, CNRS, F-21000 Dijon, France.

Physical review letters
|August 27, 2025
PubMed
まとめ

研究者らは非線形光学共振器に 独特の時間的局所構造である 新種の"極化ファティコン"を発見した. これらのキラル分散ソリトンは対称性を破り 複雑な光と物質の相互作用について 新たな洞察を与えてくれます

さらに関連する動画

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
07:42

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

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関連する実験動画

Last Updated: Sep 10, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

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科学分野:

  • 非線形光学
  • 光学について
  • 複雑なシステム

背景:

  • 誘導された非線形光学共振器は,複雑なダイナミクスを示すことができる.
  • 分散型ソリトンは,均衡状態から遠く離れた開かれたシステムにおける局所構造である.
  • マルチコンポーネントシステムは 豊かな新興現象をしばしば表します

研究 の 目的:

  • 非線形光学共振器における新しい一時的局所分散構造を調査する.
  • これらの新しい構造の性質と形成メカニズムを特徴づける.
  • 周波数コンブ発電などの潜在的応用を探求する.

主な方法:

  • 構造形成の数値的な予測
  • 駆動された非線形光学共振器での実験観測.
  • シンメトリブレイクと興奮ダイナミクスの分析

主要な成果:

  • ポラライゼーション・ファティコンの観察,キラル・ディシパティブ・ソリトンの新型.
  • ファティコンが 時間の対称性や偏振を 破る証拠だ
  • 崩壊ダイナミクスを介して刺激されたファティコンとベクトル変調不安定の間のリンクの識別.

結論:

  • ポラライゼーションファティコンはベクトル型局所分散構造の新種を表しています.
  • これらの構造は,特定の共鳴器のタイプで周波数を生成する可能性を秘めています.
  • 複数のコンポーネントの消散システムに関する 根本的な洞察が得られた.