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相关概念视频

Formal Charges02:42

Formal Charges

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In some cases, there are seemingly more than one valid Lewis structures for molecules and polyatomic ions. The concept of formal charges can be used to help predict the most appropriate Lewis structure when more than one reasonable structure exists.
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Continuous Charge Distributions01:17

Continuous Charge Distributions

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Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
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相关实验视频

Updated: Jun 18, 2025

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
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Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

Published on: April 15, 2013

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尖端充电的碳纳米管中的水结构.

Yûi Ono1, Eiji Yamamoto2, Kenji Yasuoka1

  • 1Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.

The Journal of chemical physics
|August 1, 2024
PubMed
概括

充电的碳纳米管中的水分子形成由电场影响的复杂结构. 这些发现对于开发先进的分离膜和纳米流体设备至关重要.

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 物理化学 物理化学

背景情况:

  • 碳纳米管 (CNT) 对于分离膜和纳米流体设备至关重要.
  • 在CNT中,水的行为对表面功能组和电场敏感.
  • 现有的研究缺乏对功能组和电场对封闭水域的影响的综合了解.

研究的目的:

  • 为了研究尖端充电CNT中的水分子结构.
  • 了解由尖端电荷产生的电场对水特性的影响.
  • 探索在 (8,8), (10,10) 和 (12,12) CNT中具有不同电荷分布的水的行为.

主要方法:

  • 模拟的水分子在特定的奇拉向量 (8,8, (10,10), (12,12) 的尖端充电CNTs内.
  • 模拟了有离子的函数组作为小费,以简化分析.
  • 在由对称的尖端电荷产生的不均电场下分析了水结构.

主要成果:

  • 尖端充电的CNT表现出复杂的,不均的电场.
  • 在 (8,8) 和 (10,10) CNTs中观察到螺旋形和方形水结构带有干扰.
  • 水的特性在正负电荷附近,以及在CNT中心有显著的变化.

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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

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Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

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  • 在 (12,12) CNTs中出现了接近负电荷的局部环状结构.

    • 结论:

    • 尖端充电CNT中的水结构不同于在均场下的平面CNT中的水结构.
    • 小费会产生独特的电场分布,影响纳米水的分布.
    • 这些发现有助于进一步了解用于分离应用的功能化纳米材料中的水行为.