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相关概念视频

Capacitors and Capacitance01:18

Capacitors and Capacitance

7.6K
A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
7.6K
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

313
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
313
Capacitors01:15

Capacitors

432
Capacitors play a crucial role in car radios, where they filter and store frequencies to ensure clear signal reception. Essentially serving as energy storage devices, capacitors store energy within their electric field and are composed of two parallel conducting plates separated by a dielectric.
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
432
MOS Capacitor01:25

MOS Capacitor

782
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
782
Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

3.6K
When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
3.6K

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相关实验视频

Updated: Jul 2, 2025

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
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超符合性集成无线充电微型超级电容器皮肤

Chang Gao1, Qing You2, Jiancheng Huang3

  • 1School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China. changgao@bjtu.edu.cn.

Nano-micro letters
|February 19, 2024
PubMed
概括

研究人员使用液体前体方法开发了一种类似皮肤的集成无线充电微型超级电容器. 这种符合标准的设备为可穿戴电子产品和健康监测应用提供了强大的性能.

关键词:
电子皮肤 电子皮肤微型超级电容器 微型超级电容器超级电容器的皮肤无线充电储能器件是一种无线充电储能器件.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程
  • 储能 储能 储能 储能 储能 储能

背景情况:

  • 可穿戴电子产品需要灵活的无线电源解决方案.
  • 目前的设备在灵活性和组件完整性方面面临限制.
  • 现有的电源阻碍了健康监测和机器人技术的应用.

研究的目的:

  • 开发一种超兼容的,类似皮肤的集成无线充电微型超级电容器.
  • 为了克服目前可穿戴设备的灵活电源的局限性.
  • 为了在符合电子设备中实现强大的性能.

主要方法:

  • 对于所有设备组件 (电解质,电极,基板) 使用液体前体蒸发方法.
  • 通过液体透和透实现了强大的界面粘附.
  • 通过调节前体溶液体积 (11.7112.5μm) 来控制电极厚度.

主要成果:

  • 展示了一个紧的,全合一的集成无线充电微型超级电容器 (IWC-MSC).
  • 实现了11.39 F cm-3.3 的高体积容量.
  • 这种薄薄的,类似皮肤的设备很好地适应像人体这样的曲表面.

结论:

  • 开发的IWC-MSC为可贴在皮肤上的电子产品提供了一个有前途的解决方案.
  • 这项技术可以推动可穿戴传感器和微机器人的发展.
  • 这种制造方法为坚固,符合规格的储能设备提供了途径.