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Exceptions to the Octet Rule02:55

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Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
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It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
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Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
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Ionization Energy03:12

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The amount of energy required to remove the most loosely bound electron from a gaseous atom in its ground state is called its first ionization energy (IE1). The first ionization energy for an element, X, is the energy required to form a cation with 1+ charge:
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Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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光学とフォトニクスの例外的な点

Mohammad-Ali Miri1,2,3, Andrea Alù4,3,5,1

  • 1Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.

Science (New York, N.Y.)
|January 5, 2019
PubMed
まとめ
この要約は機械生成です。

システム固有値が融合する例外的な点は,非ヘルミシアンフォトニクスにおける鍵です. 増減を制御することで 異様な光学機能が明らかになり 超敏感な測定が可能になります

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関連する実験動画

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High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip
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科学分野:

  • * 物理学
  • * 光学
  • * 量子力学

背景:

  • 環境とのエネルギー交換によって特徴づけられる非ヘルミシア系は,例外点と呼ばれる独特の退化を示します.
  • * 量子力学におけるパリティ・タイム (PT) の対称性により,ハミルトン理論は完全にリアルなスペクトルを持つことができ,この概念はフォトニクスにおいて牽引力を獲得している.
  • * フォトニクスは,ナノスケール構造における制御可能な光学増減により,非ヘルミシアン物理学のプラットフォームを提供します.

研究 の 目的:

  • * フォトニクスの例外的な点物理学によって提示される機会をレビューする.
  • * フォトニックの例外点における最近の理論的および実験的進歩について議論する.
  • * 基礎科学と応用技術の両方の例外的な点の将来の見通しを検討する.

主な方法:

  • * 非ヘルミシア系と例外点の理論的探査
  • * 制御された増減による光子システムの実験調査.
  • * 固有値スペクトルの分析と退化に近いシステムの応答

主要な成果:

  • * 特殊な点はナノフォトニックシステムの反応を劇的に変化させ,エキゾチックな光学機能を可能にします.
  • * これらの変異は,固有値スペクトルの突然の相変化につながります.
  • * 応用には,超感度測定,高度なレーザー制御,およびトポロジカルエネルギー転送が含まれます.

結論:

  • * 特殊な点物理学は光学における大きな可能性を秘め,光学機能のイノベーションを推進する.
  • * 最近の研究では,レーザーと非線形光学の非ヘルミシアン変異の実用的な応用が強調されています.
  • * 将来の機会は,基礎的な科学的発見から新しい応用技術の開発に至ります.