Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

5.1K
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.
5.1K
Energy Stored in a Capacitor: Problem Solving01:26

Energy Stored in a Capacitor: Problem Solving

2.0K
In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
2.0K
Energy Stored in Capacitors01:10

Energy Stored in Capacitors

1.3K
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.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
1.3K
Capacitor With A Dielectric01:18

Capacitor With A Dielectric

5.2K
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...
5.2K
Capacitors01:15

Capacitors

1.1K
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...
1.1K
Capacitor in an AC Circuit01:23

Capacitor in an AC Circuit

4.2K
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...
4.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A biodegradable low-voltage soft actuator with exceptional energy density and ultrafast response.

Science advances·2026
Same author

Sex-Specific and Time-Dependent Outcomes After TAVR Versus SAVR: A Meta-Analysis of Randomized Trials.

JACC. Advances·2026
Same author

Synergistic Plasma Surface Engineering and Dielectric Tailoring of PDMS Toward High-Output Triboelectric Energy Harvesting.

Small methods·2026
Same author

Combating small extracellular vesicle-mediated immunological barriers in the tumor microenvironment via strategically activatable PEGylated peptides.

Signal transduction and targeted therapy·2026
Same author

Protective Effect of <i>Liriope platyphylla</i> Root Extract on Dextran Sulfate Sodium-Induced Ulcerative Colitis in Mice.

Journal of microbiology and biotechnology·2026
Same author

Risk of Intrahepatic and Extrahepatic Cancers in Hepatitis C Virus Infection: A Nationwide Cohort Study in Korea, 2005-2023.

Liver international : official journal of the International Association for the Study of the Liver·2026
Same journal

Lasing characteristics and stress-tuning effects in GaN beam microcavities.

Nanoscale·2026
Same journal

Unraveling the synergy of core doping and the motif shell in atomically precise PtAg nanoclusters for CF<sub>3</sub>-ketone alkynylation.

Nanoscale·2026
Same journal

A dual-functional heavy-metal-free quantum dot/TiO<sub>2</sub> hybrid system for simultaneous pollutant degradation and green hydrogen production.

Nanoscale·2026
Same journal

Rational design of spherical NiCoB@rGO nanocomposites for efficient electrochemical energy storage.

Nanoscale·2026
Same journal

Ligand-controlled engineering of Cu-H active sites on Cu<sub>25</sub> hydride nanoclusters for efficient CO<sub>2</sub> electroreduction.

Nanoscale·2026
Same journal

Isostructural Co/Ni-containing banana-shaped polyoxometalates for visible-light-driven hydrogen production.

Nanoscale·2026
See all related articles

Related Experiment Video

Updated: Mar 27, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
12:00

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

15.4K

Shape-engineerable composite fibers and their supercapacitor application.

Kang Min Kim1, Jae Ah Lee2, Hyeon Jun Sim1

  • 1Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul 04763, South Korea. sjk@hanyang.ac.kr.

Nanoscale
|January 13, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed a simple method to create flexible, conductive carbon-based fibers in hollow, twisted, and ribbon shapes. These shape-engineered fibers offer distinct mechanical and electrical properties for advanced applications.

More Related Videos

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
08:59

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Published on: November 30, 2022

5.3K
Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.9K

Related Experiment Videos

Last Updated: Mar 27, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
12:00

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

15.4K
Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
08:59

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Published on: November 30, 2022

5.3K
Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.9K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Science

Background:

  • Carbon nanomaterials offer excellent electrical and mechanical properties.
  • Flexible, conductive, and shape-engineered carbon fibers are of significant interest.
  • Previous research explored various fiber shapes like hollow, twist, and ribbon.

Purpose of the Study:

  • To propose a simple and effective method for controlling carbon-based fiber shapes.
  • To fabricate hollow, twisted, and ribbon-shaped fibers from specific gel composites.
  • To investigate the mechanical and electrical properties of the fabricated fibers.

Main Methods:

  • Wet spinning of giant graphene oxide (GGO)/single-walled carbon nanotubes (SWNTs)/poly(vinyl alcohol) (PVA) gels.
  • Fabrication of three distinct fiber shapes: hollow, twisted, and ribbon.
  • Characterization of mechanical properties (specific strength, strain) and electrical conductivity.

Main Results:

  • Successfully fabricated hollow, twisted, and ribbon-shaped fibers.
  • Demonstrated varying mechanical properties: average specific strengths of 126.5, 106.9, and 38.0 MPa, respectively.
  • Ribbon fibers exhibited high electrical conductivity (524 ± 64 S cm⁻¹) and areal capacitance (2.38 mF cm⁻²).

Conclusions:

  • The developed method allows for effective control over carbon-based fiber shape.
  • Different fiber shapes possess unique mechanical and electrical characteristics.
  • Shape-engineered GGO/SWNT/PVA fibers show potential for applications requiring tailored properties.