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 Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

1.9K
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
1.9K
The Energies of Atomic Orbitals03:21

The Energies of Atomic Orbitals

30.3K
In an atom, the negatively charged electrons are attracted to the positively charged nucleus. In a multielectron atom, electron-electron repulsions are also observed. The attractive and repulsive forces are dependent on the distance between the particles, as well as the sign and magnitude of the charges on the individual particles. When the charges on the particles are opposite, they attract each other. If both particles have the same charge, they repel each other.
30.3K
Ionization Energy03:12

Ionization Energy

43.5K
The amount of energy required to remove the most loosely bound electron from a gaseous atom in its ground state is called its first ionization energy (IE1). The first ionization energy for an element, X, is the energy required to form a cation with 1+ charge:
43.5K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

65.2K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
65.2K
Electron Carriers01:24

Electron Carriers

92.0K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
92.0K
Electron Affinity03:07

Electron Affinity

43.5K
The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
43.5K

You might also read

Related Articles

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

Sort by
Same author

Cross-population meta-analysis and colocalisation analysis reveal novel and pleiotropic genes associated with rib and teat number in pigs.

Animal : an international journal of animal bioscience·2026
Same author

Comparison of cone-beam CT guided prostatic artery embolization combined with transurethral resection of the prostate versus TURP alone for large-volume (>80 mL) benign prostatic hyperplasia: a propensity score matched study.

Clinical radiology·2026
Same author

[Comparison between laparotomy and laparoscopic operation for patients with gastric gastrointestinal stromal tumors: a multi-center observational study].

Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery·2026
Same author

[Anti-inflammatory effects of cell membrane vesicle-mediated delivery of small interfering RNA targeting tumor necrosis factor-α on dental pulp stem cells].

Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences·2026
Same author

[A case of pseudohyponatremia in a patient with severe liver disease].

Zhonghua nei ke za zhi·2026
Same author

[Mechanisms and research progress in the role of the retrotrapezoid nucleus in respiratory regulation].

Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery·2026
Same journal

Topological properties of curved spacetime extended Su-Schrieffer-Heeger model.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Influence of lattice expansion on Cr ferromagnetism in Ce<sub>(1-x)</sub>La<sub>(x)</sub>CrGe<sub>3</sub>compounds revealed by atomic-scale measurements.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Bond-length-driven magnetic transition in quasi-one-dimensional CrSb<i>X</i><sub>3</sub>(<i>X</i>=S, Se).

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Anelasticity in MgAl2O4 spinel due to cation order-disorder.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

The influence of water on the dynamics of alternating polymers P(C<sub>8</sub>EG<sub>4</sub>) and P(C<sub>4</sub>EG<sub>4</sub>) by broadband dielectric spectroscopy.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

How surface curvature shapes water nanodroplets in air.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
See all related articles

Related Experiment Video

Updated: Feb 10, 2026

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography
08:15

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography

Published on: June 9, 2018

6.8K

On-demand electron source with tunable energy distribution.

Y Yin1

  • 1Laboratory of Mesoscopic and Low Dimensional Physics, Department of Physics, Sichuan University, Chengdu, Sichuan 610064, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 30, 2018
PubMed
Summary
This summary is machine-generated.

Researchers demonstrate a new method to control electron-hole excitations using voltage pulses. This technique allows emitted electrons to follow a Fermi distribution, aiding studies in thermal transport and quantum systems.

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
Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

6.6K

Related Experiment Videos

Last Updated: Feb 10, 2026

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography
08:15

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography

Published on: June 9, 2018

6.8K
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
Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

6.6K

Area of Science:

  • Quantum electronics
  • Mesoscopic physics
  • Condensed matter physics

Background:

  • Electron-hole excitation in voltage pulse electron sources can be suppressed using Lorentzian pulses, leading to noiseless electron current.
  • Controlling quantum excitations is crucial for developing advanced electronic devices and understanding fundamental quantum phenomena.

Purpose of the Study:

  • To propose and analyze a scheme for manipulating electron-hole excitation in a voltage pulse electron source.
  • To demonstrate that specific voltage pulses can tune electron energy distribution to a Fermi distribution without additional relaxation mechanisms.
  • To highlight the potential applications in studying thermal transport and decoherence in mesoscopic systems.

Main Methods:

  • Utilizing a voltage-driven Ohmic contact connected to a quantum Hall edge channel.
  • Applying voltage pulses with a specific duration (t₀) to manipulate electron-hole excitations.
  • Analyzing the energy distribution of emitted electrons and shot noise characteristics.

Main Results:

  • The proposed scheme allows tuning of electron-hole excitation via voltage pulses, unlike Lorentzian pulses.
  • The energy distribution of emitted electrons can be made to follow a Fermi distribution with temperature T_S (electron temperature in the Ohmic contact).
  • This Fermi distribution is achieved without requiring additional energy relaxation mechanisms.

Conclusions:

  • The developed method offers a novel way to control electron-hole excitations and achieve Fermi-Dirac statistics for emitted electrons.
  • The technique is detectable via shot noise thermometry, providing a valuable tool for mesoscopic physics research.
  • This work contributes to the understanding of thermal transport and decoherence in quantum systems.