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

Calculations of Electric Potential II01:27

Calculations of Electric Potential II

1.6K
An electric dipole is a system of two equal but opposite charges, separated by a fixed distance. This system is used to model many real-world systems, including atomic and molecular interactions. One of these systems is the water molecule, but only under certain circumstances. These circumstances are met inside a microwave oven, where electric fields with alternating directions make the water molecules change orientation. This vibration is equivalent to heat at the molecular level.
Consider a...
1.6K
Carrier Transport01:21

Carrier Transport

418
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
418
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

35.8K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
35.8K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

373
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
373
Two-Dimensional (2D) NMR: Overview01:12

Two-Dimensional (2D) NMR: Overview

633
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
633
Electric Potential Energy of Two Point Charges01:12

Electric Potential Energy of Two Point Charges

4.5K
The electric potential energy of a test charge in a uniform eclectic field can be generalized to any electric field produced by static charge distribution. Consider a positive test charge in an electric field produced by another static positive charge. If the test charge is moved away from the static charge, then the electric field does the positive work on the test charge, and the electric potential energy of the test charge decreases as it moves away from the static charge. Here the electric...
4.5K

You might also read

Related Articles

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

Sort by
Same author

Erchen Decoction Induces Browning Tendency in White Adipose Tissue of Obese Rats via the SP1/ SREBP/UCP1 Signaling Pathway.

Endocrine, metabolic & immune disorders drug targets·2026
Same author

Structure-Guided Discovery of Neuroprotective Kromycin-Type Macrolides from <i>Streptomyces narbonensis</i> sp.

Journal of natural products·2026
Same author

Ultrabroadband Silicon-Based Infrared Detectors by Integrating with Multilayer Graphene.

ACS applied materials & interfaces·2026
Same author

Observation of tunable chiral spin textures with nonlinear optics.

Nature communications·2026
Same author

Highly sensitive microphones based on large freestanding reduced graphene oxide membranes.

Nature communications·2026
Same author

Correlative in situ x-ray photoelectron spectroscopy and transmission electron microscopy characterization under identical reaction conditions.

The Review of scientific instruments·2026
Same journal

Formation of Bimetallic Nanoparticles via Exsolution Using a Reducible Metal Oxide Capping Layer.

ACS nano·2026
Same journal

Cold-Driven Thermoelectric Patch for Postoperative Tumor Control.

ACS nano·2026
Same journal

Chemically Fueled Interfacial Supramolecular Polymerization.

ACS nano·2026
Same journal

Tactile Neuromorphic Ion-Gated Vertical Transistor Displays Enabling Dual-Output Reservoir Computing.

ACS nano·2026
Same journal

In Situ Oxygen Shuttling within a Bilayer Electrified Membrane Enables Aeration-Free Electro-Fenton Water Purification.

ACS nano·2026
Same journal

Single Atoms as Growth Directors: From Graphene Edges to Atomically Precise Interfaces in 2D Materials.

ACS nano·2026
See all related articles

Related Experiment Video

Updated: Jun 17, 2025

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

8.4K

Two-Dimensional Exciton Oriented Diffusion via Periodic Potentials.

Yuchen Dai1, Guangyi Tao1, Yuxiang Chen1

  • 1School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing 100871, China.

ACS Nano
|August 14, 2024
PubMed
Summary
This summary is machine-generated.

This study demonstrates oriented exciton diffusion in WS2 monolayers using periodic nanostructures. This method enhances exciton diffusion and emission, paving the way for advanced excitonic devices.

Keywords:
exciton diffusionexciton funnelingperiodic potentialsstrain fieldtwo-dimensional exciton

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

7.5K
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

7.4K

Related Experiment Videos

Last Updated: Jun 17, 2025

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

8.4K
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.5K
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

7.4K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Excitonic devices leverage excitons for photon-carrier conversion, promising high-speed and integrated systems.
  • Controlling exciton diffusion directionality is challenging due to their neutral charge, limiting device performance.

Purpose of the Study:

  • To achieve efficient and directed exciton diffusion in WS2 monolayers.
  • To enhance excitonic device performance through improved exciton transport and emission.

Main Methods:

  • Utilized a one-dimensional periodic nanostructure (1DPS) to create periodic strain and resonant modes in WS2 monolayers.
  • Employed density functional theory (DFT) and finite-element method (FEM) for theoretical analysis.
  • Investigated exciton behavior under resonant emission conditions.

Main Results:

  • Achieved a 7.6-fold enhancement in exciton diffusion coefficient and a 10-fold increase in emission intensity.
  • Reduced exciton saturation threshold power by two orders of magnitude.
  • Demonstrated exciton funneling induced by periodic potentials, enabling oriented diffusion without large potential barriers.

Conclusions:

  • Periodic nanostructures effectively control exciton diffusion anisotropy and enhance excitonic properties in WS2 monolayers.
  • The findings suggest a viable strategy for developing high-performance excitonic devices.
  • Resonant emission plays a crucial role in achieving nonlinear exciton diffusion and improved anisotropy.