微細構造定数は,グラフェンの視覚的透明性を定義する
R R Nair1, P Blake, A N Grigorenko
1Manchester Centre for Mesoscience and Nanotechnology, University of Manchester, M13 9PL Manchester, UK.
まとめ
グラフェンはグラフェン.
科学分野:
- 凝縮物質物理学 凝縮物質物理学
- 量子電動力学とは,量子電動力学である.
背景:
- 凝縮物質物理学の現象は,基本定数にのみ依存するものはほとんどありません.
- このような現象を観察するには,通常,特殊な設備と条件が必要です.
研究 の 目的:
- グラフェンの不透明度が微細構造定数によってのみ決定されていることを示すために.
- 物質特異性ではなく,基本的な物理によって定義された物質特性を強調する.
主な方法:
- グラフェンの光との相互作用の理論分析.
- 懸浮グラフェン中の光の吸収を実験的に測定した.
主要な成果:
- グラフェンの不透明性は,微細構造定数 (α) によってのみ定義されます.
- 懸浮グラフェンは,発生する白い光の相当な部分 (2.3%) を吸収する.
- この吸収はグラフェンのユニークな電子構造に起因する.
結論:
- グラフェンは,量子電動力学に関連した基本的な光学特性を示しています.
- 材料の1原子の厚さは,光との顕著な相互作用を排除しません.
関連する概念動画
Network Covalent Solids
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Fermi Level Dynamics
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Debye–Huckel–Onsager Conductance Equation
The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect. According to this equation,...


