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相关概念视频

Magnetic Damping01:17

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...

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相关实验视频

Updated: Jun 8, 2026

Planar and Three-Dimensional Printing of Conductive Inks
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对于压电元件的快速和多功能静电磁盘微印刷.

Xuemu Li1,2, Zhuomin Zhang1,2, Zehua Peng1,2

  • 1Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.

Nature communications
|October 14, 2023
PubMed
概括

一种新的静电磁盘微印技术使得能够快速,大面积制造压电纳米粒子,薄膜和图案. 这种方法显著提高了用于先进应用的压电特性和材料多功能性.

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Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
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相关实验视频

Last Updated: Jun 8, 2026

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 增材制造 增材制造 增材制造

背景情况:

  • 压电纳米粒子,薄膜和图案对于传感,执行,催化和能量收集至关重要.
  • 当前的制造方法在实现高生产率,大面积覆盖和精确的结构控制方面面临挑战.

研究的目的:

  • 为了介绍一种新,快速和多功能的静电磁盘微印技术.
  • 为了证明制造氧化基酸 (PZT) 基压电元件的结构和尺寸受到控制.

主要方法:

  • 利用静电磁盘微印,利用液气接口的不稳定性进行墨水滴处理.
  • 开发了一种多重的尖端喷射模式,用于逐层沉积.
  • 制造PZT和其他功能材料的独立的纳米粒子,薄膜和微型.

主要成果:

  • 在PZT膜中实现了高压电应变常数 (560 pm/V),超过了最先进技术的1-2倍.
  • 已证明的超高沉积速度高达10^9μm3/s,比现有技术快出一个数量级.
  • 成功打印各种材料,包括陶和金属纳米粒子,聚合物和生物分子.

结论:

  • 静电磁盘微印刷为制造先进的压电材料提供了一个高生产率和多功能平台.
  • 该技术由于其速度和材料兼容性,显示出在电子,生物技术及其他领域应用的巨大潜力.