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Related Concept Videos

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

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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

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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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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.
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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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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.
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Energy Stored in Capacitors01:10

Energy Stored in Capacitors

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A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
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Related Experiment Video

Updated: Nov 5, 2025

Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors
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Fully 3D Printed and Disposable Paper Supercapacitors.

Xavier Aeby1, Alexandre Poulin1, Gilberto Siqueira1

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Advanced Materials (Deerfield Beach, Fla.)
|May 15, 2021
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Summary
This summary is machine-generated.

Researchers developed fully printable, nontoxic supercapacitors using disposable materials. These sustainable electronics offer a high capacitance for smart devices, addressing the growing electronic waste problem.

Keywords:
direct ink writinggreen electrolytesmetal-free devicesnanocellulosesupercapacitors

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Area of Science:

  • Materials Science
  • Sustainable Electronics
  • Energy Storage

Background:

  • The Internet of Things (IoT) drives demand for electronics in wearables and packaging, leading to a surge in electronic waste (e-waste).
  • Current energy storage solutions like lithium-ion batteries rely on nonrenewable, toxic materials, necessitating complex recycling and limiting device design.
  • The need for sustainable alternatives is growing due to environmental concerns and the increasing volume of e-waste.

Purpose of the Study:

  • To develop fully printable, nontoxic supercapacitors using exclusively disposable materials.
  • To demonstrate a sustainable energy storage solution for emerging electronic applications.
  • To explore new avenues in sustainable electronics, including environmental sensing, e-textiles, and healthcare.

Main Methods:

  • Utilized digital material assembly for fully printed supercapacitors.
  • Employed exclusively disposable and nontoxic materials in fabrication.
  • Tested supercapacitor performance, including capacitance and operating voltage.

Main Results:

  • Achieved a high capacitance of 25.6 F g-1 active material.
  • Demonstrated stable operation at an elevated voltage of up to 1.2 V.
  • Successfully created fully printed, nontoxic supercapacitors.

Conclusions:

  • The developed supercapacitors offer a sustainable and high-performance energy storage solution.
  • The combination of digital printing, nontoxicity, and disposable materials opens new possibilities for sustainable electronics.
  • Potential applications include environmental sensors, e-textiles, and healthcare devices.