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

Multiple Voltage Sources01:25

Multiple Voltage Sources

1.8K
Generally, a single battery is not enough to power some devices. In such cases, batteries can be combined in two ways: in series or in parallel.
In series, the positive terminal of one battery is connected to the negative terminal of another battery. Hence, the voltage of each battery is added to give the net voltage, which is increased because each battery boosts the electrons that enter it. The same current flows through each battery because they are connected in series.
Batteries are...
1.8K
Nodal Analysis with Voltage Sources01:11

Nodal Analysis with Voltage Sources

2.0K
Nodal analysis is a remarkably effective method used in electrical engineering to simplify the analysis of complex circuits, including those with dependent or independent voltage sources. Its strength lies in its systematic approach to breaking down circuits into manageable components, making it easier for engineers to understand and solve.
Consider a circuit that contains four resistors and two voltage sources, as shown in Figure 1. One of these voltage sources is connected between a...
2.0K
DC Generator01:19

DC Generator

2.1K
An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
2.1K
Heating and Cooling Curves02:44

Heating and Cooling Curves

28.0K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
28.0K
DC Battery01:21

DC Battery

1.3K
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
1.3K
Voltage01:13

Voltage

4.3K
The movement of electrons in a conductor requires some form of energy or work, usually provided by an external force, like a battery. This force is called the electromotive force or voltage. The voltage between two points, referred to as points "a" and "b," in an electric circuit is the energy (or work) needed to move a unit charge from point "a" to point "b," and this relationship is expressed mathematically as
4.3K

You might also read

Related Articles

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

Sort by
Same author

Dynamic alterations of thrombotic molecular markers in acute ischemic stroke patients after intravenous thrombolysis: a prospective cohort study.

BMC neurology·2026
Same author

Epitope mapping of humoral immunogenicity of orvacabtagene autoleucel shows an IgM response with minimal impact on CAR T cellular kinetics.

Molecular therapy. Advances·2026
Same author

Microstructure and Mechanical Properties of a Ti-Al-Mo-V-Cr-Sn-Zr Titanium Alloy via Double-Annealing Heat Treatment.

Materials (Basel, Switzerland)·2026
Same author

Association of premarital medical check-ups and folic acid knowledge, attitudes, and practices with the occurrence of neural tube defects in Guangxi, China (2009-2023).

Journal of global health·2026
Same author

Modulating energy band structure and energy transfer pathways in CAU-10 series MOFs via ligand engineering to enhance photocatalytic oxidase-like activity for multimodal phytate detection.

Biosensors & bioelectronics·2026
Same author

One-Dimensional Metal Oxide Nanostructures for Room-Temperature Gas Sensing: Synthesis, Optimization, and Future Perspectives.

ACS sensors·2026

Related Experiment Video

Updated: Feb 5, 2026

Optimizing Sample Preparation for Cryogenic Electron Microscopy
06:32

Optimizing Sample Preparation for Cryogenic Electron Microscopy

Published on: April 11, 2025

1.0K

A cryogenically cooled high voltage DC photoemission electron source.

Hyeri Lee1, Xianghong Liu1, Luca Cultrera1

  • 1CLASSE, Cornell University, Ithaca, New York 14853, USA.

The Review of Scientific Instruments
|September 7, 2018
PubMed
Summary
This summary is machine-generated.

We designed a compact, high-voltage DC electron gun with a cryogenic photocathode system. This innovative design achieves high brightness electron beams for applications like ultrafast electron diffraction.

More Related Videos

Preparing a Celadonite Electron Source and Estimating Its Brightness
09:14

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

4.9K
Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
08:53

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

18.2K

Related Experiment Videos

Last Updated: Feb 5, 2026

Optimizing Sample Preparation for Cryogenic Electron Microscopy
06:32

Optimizing Sample Preparation for Cryogenic Electron Microscopy

Published on: April 11, 2025

1.0K
Preparing a Celadonite Electron Source and Estimating Its Brightness
09:14

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

4.9K
Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
08:53

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

18.2K

Area of Science:

  • Physics
  • Materials Science
  • Engineering

Background:

  • Compact high-brightness electron sources are crucial for advanced applications like ultrafast electron diffraction.
  • Achieving high brightness in compact sources is challenging due to conflicting design requirements.

Purpose of the Study:

  • To present a novel design for a compact, high-voltage DC electron gun.
  • To incorporate a cryogenic photocathode system for enhanced performance.
  • To report on the construction and commissioning of this new electron gun.

Main Methods:

  • Development of a compact high-voltage DC electron gun design.
  • Integration of a novel cryogenic photocathode system.
  • Construction and commissioning of the electron gun prototype.

Main Results:

  • The photoemission gun operates at ~200 kV with an electric field of 10 MV/m.
  • The system functions at both room and cryogenic temperatures.
  • A compact photocathode plug ensures compatibility with other research institutions.

Conclusions:

  • The new design offers a pathway to high-quality electron beams without complex systems like RF superconductivity.
  • The compatible photocathode plug facilitates collaborative research and development.
  • This compact electron gun advances capabilities in ultrafast electron diffraction and related fields.