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Related Concept Videos

Capacitors and Capacitance01:18

Capacitors and Capacitance

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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...
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Design Example: Resistive Touchscreen01:14

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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.
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Capacitors01:15

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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.
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MOS Capacitor01:25

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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.
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Energy Stored in a Capacitor01:12

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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.
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Related Experiment Video

Updated: Jul 2, 2025

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
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Ultraconformable Integrated Wireless Charging Micro-Supercapacitor Skin.

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
Summary

Researchers developed a skin-like integrated wireless charging micro-supercapacitor using a liquid precursor method. This conformable device offers robust performance for wearable electronics and health monitoring applications.

Keywords:
Electronic skinMicro-supercapacitorSupercapacitor skinWireless charging energy storage device

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Energy Storage

Background:

  • Wearable electronics require flexible, wireless power solutions.
  • Current devices face limitations in flexibility and component integrity.
  • Applications in health monitoring and robotics are hindered by existing power sources.

Purpose of the Study:

  • To develop an ultracompatible, skin-like integrated wireless charging micro-supercapacitor.
  • To overcome limitations of current flexible power sources for wearables.
  • To enable robust performance in conformable electronic devices.

Main Methods:

  • Utilized a liquid precursor evaporation method for all device components (electrolyte, electrode, substrate).
  • Achieved strong interfacial adhesion through liquid infiltration and permeation.
  • Controlled electrode thickness by regulating precursor solution volume (11.7–112.5 μm).

Main Results:

  • Demonstrated a compact, all-in-one integrated wireless charging micro-supercapacitor (IWC-MSC).
  • Achieved high volumetric capacitance of 11.39 F cm⁻³.
  • The thin, skin-like device conforms well to curved surfaces like the human body.

Conclusions:

  • The developed IWC-MSC offers a promising solution for skin-attachable electronics.
  • This technology can advance the development of wearable sensors and microrobots.
  • The fabrication method provides a pathway for robust, conformable energy storage devices.