Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关实验视频

Updated: Jul 15, 2026

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

德纳米线的生长低于eutectic温度的温度.

S Kodambaka1, J Tersoff, M C Reuter

  • 1IBM T. J. Watson Research Center, Yorktown Heights, NY 10598, USA.

Science (New York, N.Y.)
|May 5, 2007
PubMed
概括

纳米线的生长低于温室温度可以发生在液体或固体催化剂. 催化剂状态取决于生长压力和热史,挑战传统的蒸汽-液体-固体模型.

相关概念视频

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Control of structure and spin texture in the van der Waals layered magnet CrSBr.

Nature communications·2022
Same author

Atomic Resolution in Situ Imaging of a Double-Bilayer Multistep Growth Mode in Gallium Nitride Nanowires.

Nano letters·2016
Same author

The Role of Surface Passivation in Controlling Ge Nanowire Faceting.

Nano letters·2015
Same author

Stable Self-Catalyzed Growth of III-V Nanowires.

Nano letters·2015
Same author

Synthesis of nanostructures in nanowires using sequential catalyst reactions.

Nature materials·2015
Same author

Wetting transition for carbon nanotube arrays under metal contacts.

Physical review letters·2015

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:

  • 传统的纳米线生长模型通过蒸汽-液体-固体 (VLS) 过程假设液态催化剂.
  • 观察到的纳米线增长低于eutectic温度提出了关于催化剂相 (液体与固体) 的问题.
  • 催化剂在各种条件下的确切状态仍然是科学辩论的主题.

研究的目的:

  • 为了研究在金 (Ge/Au) 纳米线生长时的催化剂状态,低于体温度.
  • 确定压力和热史等外部因素对催化剂行为的影响.
  • 挑战和完善现有的纳米线形成模型.

主要方法:

  • 在现场显微镜被用来实时观察纳米线的生长.
  • 经典的Ge/Au系统被用作研究纳米线形成的模型.
  • 应用了生长压力和热史的受控变化.

主要成果:

  • 通过使用液体和固体催化剂,证明了纳米线的生长发生在低于热的温度下.
  • 发现催化剂的相位 (液体或固体) 取决于生长压力和材料的热史.
  • 这些发现与在某些条件下在VLS过程中使用液态催化剂的严格要求相矛盾.

结论:

  • 该研究表明,纳米线的生长并不仅限于催化剂的液体-固体相.
  • 提议以eutectic合金组成的动力丰富作为解释观察到的现象的潜在机制.
  • 这些发现对理解和控制各种材料系统中纳米线合成具有广泛的影响.

更多相关视频

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
08:58

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation

Published on: December 21, 2015

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
08:15

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups

Published on: February 11, 2012

相关实验视频

Last Updated: Jul 15, 2026

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
08:58

Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation

Published on: December 21, 2015

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
08:15

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups

Published on: February 11, 2012