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

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.2K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.2K
The de Broglie Wavelength02:32

The de Broglie Wavelength

31.9K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
31.9K

You might also read

Related Articles

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

Sort by
Same author

Stacking of MoS<sub>2</sub> monolayers by sequential electrochemical thinning of bulk crystals.

Chemical communications (Cambridge, England)·2026
Same author

2D excitonics with atomically thin lateral heterostructures.

Reports on progress in physics. Physical Society (Great Britain)·2026
Same author

Ultrafast transition from coherent to incoherent polariton nonlinearities in a hybrid 1L-WS<sub>2</sub>/plasmon structure.

Nature nanotechnology·2026
Same author

Exciton transport driven by spin excitations in an antiferromagnet.

Nature nanotechnology·2025
Same author

Fermi polarons under strain-induced pseudomagnetic fields.

Nature communications·2025
Same author

A foundation model for atomistic materials chemistry.

The Journal of chemical physics·2025
Same journal

Unlocking the capacity of Mn-based Prussian blue cathodes in capacitive deionization.

Nature communications·2026
Same journal

Scaling biodiversity-stability relationships from populations to meta-communities across trophic levels.

Nature communications·2026
Same journal

Thermodynamically programmed one-pot CRISPR platform for point-of-care SNP genotyping.

Nature communications·2026
Same journal

Engineering all-organic electrocatalysts with asymmetric dual-active sites for uncommon oxygen-evolving pathway.

Nature communications·2026
Same journal

Rapid GC content evolution in rice through GC-biased gene conversion and selection for translation efficiency.

Nature communications·2026
Same journal

Declines in organic matter persistence with increased soil carbon.

Nature communications·2026
See all related articles

Related Experiment Video

Updated: Nov 20, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.8K

Efficient phonon cascades in WSe2 monolayers.

Ioannis Paradisanos1,2, Gang Wang3,4, Evgeny M Alexeev3

  • 1Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, Toulouse, 31077, France. paradeis@insa-toulouse.fr.

Nature Communications
|January 23, 2021
PubMed
Summary
This summary is machine-generated.

Researchers studied energy relaxation in tungsten diselenide monolayers, observing periodic hot photoluminescence peaks. These peaks indicate phonon cascades, crucial for understanding carrier-phonon interactions in optoelectronics.

More Related Videos

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.8K
A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics
07:12

A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics

Published on: August 28, 2018

10.0K

Related Experiment Videos

Last Updated: Nov 20, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.8K
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.8K
A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics
07:12

A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics

Published on: August 28, 2018

10.0K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Optoelectronics

Background:

  • Energy relaxation of photo-excited carriers is vital for monolayer transition metal dichalcogenides (TMDs) used in optoelectronics.
  • Understanding carrier relaxation dynamics is key to optimizing device performance.

Purpose of the Study:

  • To investigate the initial stages of energy relaxation in tungsten diselenide (WSe2) monolayers.
  • To elucidate the mechanisms governing carrier-phonon interactions in WSe2.

Main Methods:

  • Measurements of light scattering and emission in WSe2 monolayers.
  • Analysis of hot photoluminescence intensity near the laser excitation energy (down to ~0.6 meV).

Main Results:

  • Observation of periodic maxima in hot photoluminescence intensity, both below (Stokes) and above (anti-Stokes) the laser excitation energy.
  • A consistent energy period of ~15 meV was found for 7 Stokes and 5 anti-Stokes peaks.
  • Strong temperature dependence of the observed photoluminescence peaks.

Conclusions:

  • The observed periodic peaks are attributed to phonon cascades involving carrier transitions between states above the free-carrier gap.
  • Intermediate states in the conduction band at the Λ-valley are inferred to play a role in these cascade processes.
  • This study provides fundamental insights into carrier-phonon interactions in WSe2 monolayers, beneficial for optoelectronic applications.