相关实验视频

Updated: Mar 3, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

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在CsxWO3/MWCNT纳米复合材料中的结构-缺陷-接口相关性:对宽带NIR吸收和光热行为的影响

Nguyen Thi Minh Nguyet1,2, Nguyen Huu Huy Phuc3,2, Hoang Phuc Tran3

  • 1VNU-HCM Key Laboratory of Material Technologies, VNUHCM-Ho Chi Minh City University of Technology, 268 Ly Thuong Kiet Street, Dien Hong Ward, Ho Chi Minh City 700000, Vietnam.

ACS omega
|March 2, 2026
PubMed
概括

合成氧化/多壁碳纳米管 (MWCNT) 纳米复合材料随着时间的推移会影响其结构和光热特性. 较长的合成时间提高了这些先进材料的光热转换效率.

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Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope11:14

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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

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Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
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Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
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