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相关概念视频

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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.
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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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相关实验视频

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Optimized Fabrication Procedure for High-Quality Graphene-based Moir&#233; Superlattice Devices
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扭曲的双层石墨烯是由间隙诱导的.

Bixuan Li1,2, Juntian Wei1, Chunqiao Jin3

  • 1School of Materials Science and Engineering, Beihang University, Beijing 100191, China.

Nano letters
|June 7, 2023
PubMed
概括

使用1,2-二chloroethane的新间隔方法有效地制造具有不同扭曲角度的双层扭曲石墨烯 (tBLG). 这种方法显著提高了tBLG的收益率,用于研究取决于角度的物理和应用.

关键词:
莫伊尔的模式是莫伊尔的模式.化学蒸气沉积 化学蒸气沉积石墨烯场效应晶体管层间相互作用是层间相互作用.扭曲的双层石墨烯

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科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学

背景情况:

  • 扭曲双层石墨烯 (tBLG) 具有独特的电子特性.
  • 有控制扭转角度的tBLG的高效制造对研究至关重要.

研究的目的:

  • 开发一种简单的方法来制造高质量的tBLG,具有多种扭转角度.
  • 为了研究用于tBLG合成的有机分子介质的使用.

主要方法:

  • 利用与1,2-二乙烯的间化策略来削弱双层石墨烯的间层相互作用.
  • 诱导最顶层石墨烯层的滑动或旋转.

主要成果:

  • 通过使用插入法,使用0°至30°的扭转角度达到高达84.4%的tBLG产量.
  • 扭转角的分布集中在0-10°和20-30°的范围内.
  • 性能优于以前的化学蒸汽沉积 (CVD) 方法.

结论:

  • 基于介质的方法是tBLG制造的快速和实用的解决方案.
  • 方便在扭曲的二维材料中研究取决于角度的物理.
  • 推进了扭曲的二维材料的利用.