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 der Waals Interactions01:24

Van der Waals Interactions

69.7K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
69.7K
Semiconductors01:22

Semiconductors

1.3K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
1.3K
Intermolecular Forces03:13

Intermolecular Forces

68.2K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
68.2K
Valence Bond Theory02:42

Valence Bond Theory

10.8K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
10.8K
Valence Bond Theory02:45

Valence Bond Theory

48.9K
Overview of Valence Bond Theory
48.9K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

795
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
795

You might also read

Related Articles

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

Sort by
Same author

An ultra low-platinum-loaded sulfate-intercalated nickel hydroxide for efficient alkaline hydrogen evolution and urea-assisted water electrolysis.

Chemical communications (Cambridge, England)·2026
Same author

Precision chemical synthesis of PEGylated IGF2 for potent and selective lysosomal degradation of transmembrane proteins.

Organic & biomolecular chemistry·2026
Same author

Complement Component C4B Prioritization Through Drug‒Target Mendelian Randomization and Proteomic Analysis Reveals a Novel Therapeutic Target for Calcific Aortic Valve Stenosis.

Cardiovascular drugs and therapy·2026
Same author

Proton lattice radiotherapy for large lung tumors: effects of robust optimization and tumor motion.

Physics in medicine and biology·2026
Same author

Angelica dahurica alleviates peripheral nerve injury-induced muscle atrophy via the Phlpp2-Akt-FoxO3α axis independently of analgesia.

Phytomedicine : international journal of phytotherapy and phytopharmacology·2026
Same author

Interfacial Engineering of pH-Responsive Nanocarriers for Enhanced Foliar Deposition and Alkaline-Triggered Release.

Langmuir : the ACS journal of surfaces and colloids·2026

Related Experiment Video

Updated: Dec 24, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.9K

Dipolar interactions between localized interlayer excitons in van der Waals heterostructures.

Weijie Li1, Xin Lu1, Sudipta Dubey1

  • 1Department of Physics, Emory University, Atlanta, GA, USA.

Nature Materials
|April 15, 2020
PubMed
Summary

Researchers observed repulsive interactions between localized excitons in a van der Waals heterostructure. This finding is key for developing quantum information processing and strongly interacting light states.

More Related Videos

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

8.9K
Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.9K

Related Experiment Videos

Last Updated: Dec 24, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.9K
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

8.9K
Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.9K

Area of Science:

  • Condensed Matter Physics
  • Quantum Optics
  • Materials Science

Background:

  • Photons minimally interact in free space, but matter mediates interactions, leading to optical nonlinearities.
  • Single-quantum interactions are vital for photon-based quantum information and creating strongly interacting many-body states of light.

Purpose of the Study:

  • To investigate repulsive dipole-dipole interactions between localized interlayer excitons.
  • To explore the potential for creating novel quantum states in van der Waals heterostructures.

Main Methods:

  • Utilized electric field-tuneable, localized interlayer excitons in MoSe2/WSe2 heterobilayers.
  • Analyzed energy shifts and magnetic field-dependent emission polarization of exciton complexes.

Main Results:

  • Observed repulsive dipole-dipole interactions between localized excitons, with a ~2 meV energy increase for a second excitation.
  • Interaction strength corresponds to an inter-dipole distance of ~7 nm, significantly larger than the emission linewidth.
  • Identified multi-exciton complexes appearing at higher energies with increased excitation power.
  • Emission polarization dependence on magnetic fields confirmed a spin-valley singlet nature of the dipolar molecular state.

Conclusions:

  • Demonstrated repulsive dipole-dipole interactions between localized excitons in a MoSe2/WSe2 heterobilayer.
  • This work is a significant step towards realizing excitonic few- and many-body states, such as dipolar crystals, in van der Waals heterostructures.