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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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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.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
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Capacitor With A Dielectric01:18

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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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Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

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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.
4.8K
Capacitor in an AC Circuit01:23

Capacitor in an AC Circuit

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A capacitor is charged by passing an electric current through it, which causes the plates to start accumulating an electrostatic charge. Since the strength of the charging current is maximum when the capacitor plates are uncharged and gradually decreases exponentially until the capacitor is fully charged, the charging process is neither instantaneous nor linear. The property of a capacitor to store a charge on its plates is called its capacitance.
Consider a purely capacitive circuit consisting...
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Capacitors01:15

Capacitors

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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.
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...
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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Updated: Feb 21, 2026

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers
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Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

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Multicolor, Fluorescent Supercapacitor Fiber.

Meng Liao1, Hao Sun1, Jing Zhang1

  • 1State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China.

Small (Weinheim an Der Bergstrasse, Germany)
|October 6, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed colorful, fluorescent supercapacitor fibers from carbon nanotubes. These fibers offer enhanced convenience and security for nighttime applications, maintaining performance under stress.

Keywords:
fibersfluorescentmulticolorsupercapacitors

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Fiber-shaped supercapacitors are promising next-generation power modules.
  • Developing supercapacitor fibers identifiable in dark environments is crucial for safety and usability.

Purpose of the Study:

  • To create novel colorful fluorescent supercapacitor fibers.
  • To enhance operational convenience and security for nighttime applications.

Main Methods:

  • Aligned multi-walled carbon nanotube sheets were used as the base material.
  • Fluorescent dye particles were introduced and anchored onto the carbon nanotube surfaces.
  • Hybrid fiber electrodes were fabricated, exhibiting a range of colors.

Main Results:

  • The developed fibers exhibit a broad spectrum of colors (red to purple).
  • The fluorescent dye provides indication capability, suitable for dark environments.
  • The colorful fluorescent supercapacitor fibers maintain high electrochemical performance during bending and cycling.

Conclusions:

  • Novel colorful fluorescent supercapacitor fibers have been successfully produced.
  • These fibers offer a unique combination of energy storage and visual indication.
  • The technology is promising for flexible, wearable devices in low-light conditions.