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

Van de Graaff Generator01:15

Van de Graaff Generator

2.6K
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
2.6K
Design Example: Forces in Sluice Gate01:11

Design Example: Forces in Sluice Gate

3.4K
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
3.4K
Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

26.2K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
26.2K

You might also read

Related Articles

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

Sort by
Same author

Host genetic regulation of rumen 6-hydroxymelatonin reduces methane emissions in dairy cattle.

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

Multi-omics revealed the effects of rumen to blood path on early lactation performance in transition dairy cows.

Microbiome·2026
Same author

Fluoroquinolone resistance in Escherichia coli in the broiler production chain: the role of parent stock and hatchery.

Poultry science·2026
Same author

Occurrence of Antimicrobial Resistance in Indicator Bacteria and <i>Campylobacter</i> spp. Isolated from Commercial Raw-Meat-Based Food for Dogs and Cats in Belgium.

Antibiotics (Basel, Switzerland)·2026
Same author

Bletilla striata polysaccharide (BSP) promotes hair growth and suppresses oxidative stress and senescence of dermal papilla cells by inhibiting prostaglandin-endoperoxide synthase 2 (PTGS2).

International journal of biological macromolecules·2026
Same author

Cholesterol surface-modified oncolytic adenovirus enriched with apolipoprotein E penetrates the blood-brain barrier to target glioblastoma immunotherapy.

Materials today. Bio·2025

Related Experiment Video

Updated: Mar 9, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.8K

Research on ultra-fast vacuum mechanical switch driven by repulsive force actuator.

Zhao Yuan1, Junjia He1, Yuan Pan1

  • 1State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.

The Review of Scientific Instruments
|January 3, 2017
PubMed
Summary

Optimized repulsive force actuators significantly enhance vacuum mechanical switch (VMS) performance. Design methods improved energy conversion efficiency (ECE) by over 10%, crucial for fast DC circuit breaker operations.

More Related Videos

Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy
09:38

Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy

Published on: July 1, 2021

1.7K
Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans
10:39

Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans

Published on: February 19, 2018

11.2K

Related Experiment Videos

Last Updated: Mar 9, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.8K
Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy
09:38

Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy

Published on: July 1, 2021

1.7K
Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans
10:39

Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans

Published on: February 19, 2018

11.2K

Area of Science:

  • Electrical Engineering
  • Mechanical Engineering
  • Materials Science

Background:

  • High-speed operation is critical for DC circuit breakers.
  • Repulsive force actuators are key components in vacuum mechanical switches (VMS).
  • Improving actuator drive speed and energy conversion efficiency (ECE) is essential for enhanced performance.

Purpose of the Study:

  • To investigate the dynamic characteristics of double-sided coil repulsive force actuators.
  • To develop generalized optimization design methods for improving actuator speed and ECE.
  • To verify the effectiveness of these optimization methods through simulations and prototype testing.

Main Methods:

  • Finite Element Method (FEM) simulations were used to model actuator dynamics.
  • Two optimization methods were developed: aspect ratio of driving coils (ARF) and electrical parameters (EF).
  • VMS prototypes were tested to validate the simulation results and optimization strategies.

Main Results:

  • The ARF method improved VMS ECE from 1.05% to 7.55%.
  • The EF method improved VMS ECE from 1.05% to 6.61%.
  • Combining ARF and EF methods boosted VMS ECE to 10.50%.

Conclusions:

  • The developed optimization methods (ARF and EF) are valid and accurate for improving VMS performance.
  • Optimized actuators significantly enhance the energy conversion efficiency of high-speed vacuum mechanical switches.
  • These findings contribute to the development of faster and more efficient DC circuit breakers.