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

Electrical Energy01:10

Electrical Energy

1.4K
Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules.
1.4K
Induced Electric Fields: Applications01:27

Induced Electric Fields: Applications

2.0K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
2.0K
Maximum Power Transfer01:16

Maximum Power Transfer

507
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
507
Energy Stored in Inductors01:16

Energy Stored in Inductors

636
An inductor is ingeniously crafted to accumulate energy within its magnetic field. This field is a direct result of the current that meanders through its coiled structure. When this current maintains a steady state, there is no detectable voltage across the inductor, prompting it to mimic the behavior of a short circuit when faced with direct current.
In terms of gauging the energy stored within an inductor, it is equivalent to the integral of the power delivered at every individual moment, all...
636
Voltage Doubler Circuit01:23

Voltage Doubler Circuit

1.0K
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
1.0K
Energy Stored in Capacitors01:10

Energy Stored in Capacitors

749
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...
749

You might also read

Related Articles

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

Sort by
Same author

Bioinspired adaptive pupil reflex based on liquid-metal shape-shifters for machine vision.

Science robotics·2026
Same author

The Role of Ionic Liquids at the Biological Interfaces in Bioelectronics.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Introduction: Tough Gels.

Chemical reviews·2026
Same author

Soft giant magnetoimpedance electronics enable contact-free human-machine interactions.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Viscoelastic Phase Transition of Polyborodimethylsiloxane (PBDMS) for Mechanical Pass Filters and Noise Fading Sensor.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Laser-programmed stiffness and interfaces for textile hybrid electronics.

Nature communications·2026
Same journal

Ordered Polar Topological Domains Enabling Giant Second-Harmonic Generation in Ferroelectric Nematic Liquid Crystals.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Dual-Functional Alumina Additive Enabling Efficient, Volumetric Mechanoluminescence for Nighttime Safety Footwear.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Phase Transformation Accompanied by Evolution of Internal Stress and the Coupling Mechanism of Chemical-Mechanical Degradation in Single-Crystal NiRich Cathodes.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Zwitterionic Polymer Electrolytes With Dipole-Rotation-Assisted Ion Conduction for Solid Lithium Metal Batteries.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

3D-Printed Ultra-Thin Solid Polymer Electrolytes with Superior Dielectric Properties for Wide Temperature Range All-Solid-State Batteries.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Electrostatic Potential Tuning by Low-Volatility Halogenated Additive: Boosting PTQ10-Based Binary OPV to Near 20% Efficiency with High Scalability.

Advanced materials (Deerfield Beach, Fla.)·2026
See all related articles

Related Experiment Video

Updated: Oct 22, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.6K

A Soft Variable-Area Electrical-Double-Layer Energy Harvester.

Veenasri Vallem1, Erin Roosa1, Tyler Ledinh1

  • 1Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, 27695, USA.

Advanced Materials (Deerfield Beach, Fla.)
|August 31, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a soft, stretchable energy harvester using variable-area electrical-double-layer (EDL) capacitors. This device converts mechanical energy into electrical energy for self-powered soft electronics and sensors.

Keywords:
energy harvestingenergy storageliquid metalssoft roboticsstretchable electronics

More Related Videos

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.3K
Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.3K

Related Experiment Videos

Last Updated: Oct 22, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.6K
Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.3K
Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.3K

Area of Science:

  • Materials Science
  • Energy Harvesting
  • Soft Electronics

Background:

  • Soft devices like wearables and sensors require sustainable, deformable energy sources.
  • Existing energy harvesters often rely on rigid components or external power for charge.
  • Mechanical-to-electrical energy conversion is key for self-powered, tetherless devices.

Purpose of the Study:

  • To develop a completely soft and stretchable energy harvester.
  • To demonstrate a novel approach using variable-area electrical-double-layer (EDL) capacitors.
  • To enable self-powered soft electronic devices through mechanical deformation.

Main Methods:

  • Fabrication of a soft energy harvester using liquid-metal electrodes encased in hydrogel.
  • Utilizing variable-area electrical-double-layer (EDL) capacitors with capacitance up to ≈40 µF cm⁻².
  • Generating electricity by mechanically deforming the device to alter EDL area and capacitance.

Main Results:

  • Achieved a soft and stretchable device capable of >400% strain.
  • Generated a power density of ≈0.5 mW m⁻² at ≈25% strain.
  • Demonstrated operation under various deformation modes (pressing, stretching, bending, twisting) and underwater.

Conclusions:

  • The developed soft EDL capacitor harvester offers a unique, self-charging energy solution.
  • Its deformability and operational versatility are advantageous for diverse applications.
  • Potential applications include sweat-contacting wearables, underwater sensing, and blue energy harvesting.