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相关概念视频

Types of Semiconductors01:20

Types of Semiconductors

1.1K
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
1.1K
Network Covalent Solids02:18

Network Covalent Solids

15.6K
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...
15.6K

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相关实验视频

Updated: Nov 26, 2025

Epitaxial Nanostructured &#945;-Quartz Films on Silicon: From the Material to New Devices
11:34

Epitaxial Nanostructured α-Quartz Films on Silicon: From the Material to New Devices

Published on: October 6, 2020

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一个纳米结构. 在上呈现的经轴钻石多种类型.

Y Lifshitz1, X F Duan, N G Shang

  • 1Center of Super-Diamond and Advanced Films, City University of Hong Kong, China. apannale@cityu.edu.hk

Nature
|July 27, 2001
PubMed
概括

离子束使钻石多种类型的纳米结构成为可能,将它们与基板对齐. 这种可控制的方法为新型碳和非碳纳米材料在各种应用中开辟了道路.

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 固态物理 固态物理

背景情况:

  • 碳的独特能力是形成多样化的结构.
  • 材料纳米结构的现有方法.
  • 离子束在微型设备制造中的作用.

研究的目的:

  • 为了证明离子束诱导的钻石多种类型的纳米结构.
  • 在上实现纳米结构钻石的表轴对齐.
  • 探索这种新技术的潜在应用.

主要方法:

  • 使用精确控制的离子束.
  • 将该技术应用于各种多种类型的钻石.
  • 在基板上对齐的表轴.

主要成果:

  • 钻石多种类型的成功纳米结构.
  • 达到与基板的表轴对齐.
  • 证明了离子束过程的可控性.

结论:

  • 离子束纳米结构是钻石多种类型的可行方法.

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High Pressure Single Crystal Diffraction at PX^2
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  • 该技术促进了在上表轴线对齐.
  • 这种方法可以开发新的碳和非碳纳米材料.