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Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

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High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods
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Published on: December 23, 2013

绝缘体的快速电是绝缘体的快速电.

Vincent Fleury1, Wesley A Watters, Levy Allam

  • 1Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique/CNRS, 91128 Palaiseau cedex, France. vincent.fleury@polytechnique.fr

Nature
|April 19, 2002
PubMed
概括

一种新的电方法使绝缘材料的金属涂层具有可控的厚度和颗粒大小. 这种技术克服了以前的局限性,允许在非导电表面上形成均的薄膜.

科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 表面工程是什么?表面工程是什么?

背景情况:

  • 金属薄膜的电化学沉积方法具有历史意义.
  • 传统的方法包括自发的氧化还原反应 (有限的控制) 和电 (仅限于导电基质).
  • 现有技术在控制沉积条件和基质兼容性方面面临挑战.

研究的目的:

  • 开发一种电技术,用金属涂覆绝缘基板.
  • 为了在沉积过程中实现可控的颗粒大小,厚度和生长速度.
  • 为了克服传统电的基板导电性限制.

主要方法:

  • 使用一种电方法,具有特定的细胞几何结构.
  • 使用金属从与基板接触的电极逐渐向外生长.
  • 优化条件以确保电子电流通过不断增长的沉积物.

主要成果:

  • 通过电成功涂上金属薄膜的绝缘基板.
  • 实现控制的金属薄膜特性,包括粒径,厚度和生长速度.
  • 确定了促进快速,均薄膜形成的特定条件,避免树突或粉状沉积物.

结论:

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  • 开发的电技术扩大了电对绝缘材料的适用性.
  • 在各种基板上精确控制金属薄膜特性.
  • 开辟了微电子,催化和保护性涂料领域的新应用的道路.