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関連する概念動画

Classifying Matter by State02:49

Classifying Matter by State

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Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars. 
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Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
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Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
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Titration Calculations: Strong Acid - Strong Base02:28

Titration Calculations: Strong Acid - Strong Base

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Calculating pH for Titration Solutions: Strong Acid/Strong Base
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
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Strong Acid and Base Solutions03:22

Strong Acid and Base Solutions

36.1K
A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial concentration of acid. For example, 0.20 M hydrobromic acid will dissociate completely in water and produces 0.20 M of hydronium ions and 0.20 M of bromide ions.
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Titration of a Strong Acid with a Strong Base01:23

Titration of a Strong Acid with a Strong Base

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During the titration of a strong acid with a strong base, pH calculations are primarily based on the concentration of residual hydronium or hydroxide ions. Initially, a strong acid like hydrochloric acid fully dissociates, creating hydronium and chloride ions, resulting in a low pH. The addition of a strong base like sodium hydroxide alters the concentration of hydronium ions by neutralizing them. As more base is added, the pH gradually increases. At the equivalence point, all hydronium ions...
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Updated: Feb 13, 2026

An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model
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二次元材料における強光物質相互作用からのデバイス応用

Janani Archana K1, Kumar Shwetabh1, Reyas Ali1

  • 1Low-dimensional Semiconductors Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 11, 2026
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まとめ

二次元(2D)半導体は、励起子およびポラリトンベースのデバイスを通じてコンパクトなオプトエレクトロニクスを可能にします。このレビューでは、強化された太陽電池、光検出器、レーザーのデバイスアーキテクチャと設計戦略に焦点を当て、集積フォトニック回路への道を開きます。

キーワード:
二次元材料励起子マグノンオプトエレクトロニクスデバイスプラズモンポラリトン

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科学分野:

  • オプトエレクトロニクスおよびナノフォトニクス
  • 材料科学
  • 物性物理学

背景:

  • 二次元(2D)半導体は、小型化されたオプトエレクトロニクスデバイスのための多用途なプラットフォームを提供します。
  • 二次元材料中の励起子は、デバイスの性能指標に強く影響します。
  • 強い光物質結合は、ユニークな特性を持つハイブリッド準粒子(ポラリトン)につながります。

研究 の 目的:

  • 光学共振器、メタサーフェス、導波路と二次元材料を統合したデバイスアーキテクチャをレビューすること。
  • 励起子およびポラリトンに基づく太陽電池、光検出器、レーザーの最適化のための設計戦略を強調すること。
  • 発光ダイオード(LED)のオンチップ統合および高度な特性評価技術について議論すること。

主な方法:

  • 二次元材料およびヘテロ構造と、誘電体共振器、メタサーフェス、導波路との統合。
  • オプトエレクトロニクスデバイスの性能指標に焦点を当てた設計戦略。
  • ポラリトン場および励起子分布のマッピングのための高度な電子顕微鏡およびナノイメージング。

主要な成果:

  • フットプリントが限定されたアーキテクチャにおける分散の設計、低しきい値レーザー発振、超高速変調、および非線形機能の強化。
  • 高性能な二次元励起子およびポラリトンベースの太陽電池、光検出器、レーザーのための最適化された設計戦略。
  • フォトニック集積回路のためのオール二次元材料LEDのオンチップ統合の実証。

結論:

  • 二次元半導体ベースの励起子およびポラリトンシステムは、次世代のオプトエレクトロニクスデバイスに大きな可能性を提供します。
  • 高度な特性評価は、ナノスケールの結合現象とマクロなデバイスの挙動を結びつけます。
  • 将来の励起子/ポラリトンデバイス開発およびオンチップ統合のためのロードマップが概説されています。