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相关概念视频

VSEPR Theory02:37

VSEPR Theory

Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure around a central atom from an examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between these electron pairs by maximizing the distance between them. The electrons in the valence shell of a central atom form either bonding...
Structure of Amines01:19

Structure of Amines

The hybridized nitrogen atom in amines possesses a lone pair of electrons and is bound to three substituents with a bond angle of around 108°, which is less than the tetrahedral angle of 109.5°. However, the C–N–H bond angle is slightly larger at 112°, with a carbon–nitrogen bond length of 147 pm. This carbon–nitrogen bond length of of amines is longer than the carbon–oxygen bond of alcohols (143 pm) but shorter than alkanes’ carbon–carbon bond (154 pm). These aspects are illustrated in Figure...

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相关实验视频

Updated: Jun 29, 2026

Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

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Published on: December 11, 2014

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对于可扩展的非线性光学元表面的酸结构的直接光化学图案设计.

Rana Faryad Ali1,2, Guillermo Aguilar1

  • 1J. Mike Walker '66 Department of Mechanical Engineering Texas A&M University College Station TX 77843 USA.

Small science
|March 5, 2026
PubMed
概括
此摘要是机器生成的。

一种新的光化学方法使得纳米光子设备的尼奥酸盐 (LN) 的可扩展,低成本的图案设计成为可能. 这种技术避免了苛刻的蚀刻,为使用LN材料的先进光学应用铺平了道路.

关键词:
酸尼酸是一种酸.metasurfaces 是一个地表.非线性光学是一种非线性光学.光化学金属有机沉积物可扩展的制造制造.

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相关实验视频

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米光子学 纳米光子学
  • 摄影化学的使用.

背景情况:

  • 基酸盐 (LN) 对于纳米光子设备,如频率转换器和调制器至关重要.
  • 制造LN设备是具有挑战性的,因为其耐化学物质和复杂的加工.
  • 需要可扩展,具有成本效益的制造方法来推进LN光子学.

研究的目的:

  • 开发一种可扩展和具有成本效益的酸模式化方法.
  • 为了克服与LN的化学耐药性相关的制造挑战.
  • 为了使LN能够集成到先进的纳米光子设备中.

主要方法:

  • 一种使用光敏有机金属前体的光化学金属有机分解技术.
  • 通过通过光罩暴露于紫外线 (UV) 光的模式.
  • 通过化步骤将无形图案转换为晶体LN.

主要成果:

  • 实现了复杂几何形状的可扩展制造,其特征分辨率低至30微米.
  • 在有图案的LN元表面中证明了可调节的第二波生成活动.
  • 在环境条件下成功地模拟了LN,避免了苛刻的蚀刻和洁净室要求.

结论:

  • 提出的光化学方法提供了一个可扩展的,低成本的途径,用于制造基酸光子.
  • 这种技术简化了LN设备的制造,并保持了材料质量.
  • 该方法有可能制造其他先进的光学材料,如酸和酸.