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

Charge on a Conductor01:26

Charge on a Conductor

4.5K
An interesting property of a conductor in static equilibrium is that extra charges on the conductor end up on its outer surface, regardless of where they originate. Consider a hollow metallic conductor with a uniform surface charge density. Since the conductor itself is in electrostatic equilibrium, there should not be any electric field inside the conductor. Now, assume a Gaussian surface enclosing the hollow portion. Applying Gauss's law, the inner surface of the hollow conductor will not...
4.5K
Energy Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

1.5K
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.
1.5K
Electric Field of Two Equal and Opposite Charges01:30

Electric Field of Two Equal and Opposite Charges

5.9K
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
5.9K
Continuous Charge Distributions01:17

Continuous Charge Distributions

6.9K
Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
6.9K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.2K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...
1.2K
Charging Conductors By Induction01:15

Charging Conductors By Induction

7.7K
The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
7.7K

You might also read

Related Articles

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

Sort by
Same author

Probing Ultrafast Excitonic Coherences and Charge-Generation Pathways in Quantum-Dot Photocells via Photocurrent-Detected Two-Dimensional Electronic Spectroscopy.

ACS nano·2026
Same author

Interfacing a nanostructured nickel oxide layer displaying fractal-like features with graphene: chemiresistive behaviour and GFET implementation.

RSC advances·2026
Same author

Bridging classical and quantum interpretation of chemical state analysis by XPS/HAXPES to resolve short-range order in amorphous alumina films.

Journal of materials chemistry. A·2026
Same author

Highly Ordered T6 Organic Semiconductor Networks on MoS<sub>2</sub> Nanosheets for Optoelectronic Applications.

ACS applied nano materials·2026
Same author

Spectroscopic Exploration of Squaraine Dyes: Molecular Characterization of Fundamental, Combination, and Overtone Bands.

ACS physical chemistry Au·2026
Same author

Ultrafast Excited-State Dynamics of a Porphyrin-OPE Conjugate: Energy Transfer and Aggregation Effects.

The journal of physical chemistry. C, Nanomaterials and interfaces·2025

Related Experiment Video

Updated: Jun 26, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.4K

Coherent Vibrations Promote Charge-Transfer across a Graphene-Based Interface.

Andrea Casotto1,2, Pavel S Rukin3, Elisa Fresch4

  • 1I-LAMP and Department of Mathematics and Physics, Università Cattolica del Sacro Cuore, via della Garzetta 48, 25133 Brescia, Italy.

Journal of the American Chemical Society
|May 20, 2024
PubMed
Summary

Investigating nuclear motion

More Related Videos

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
08:03

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

Published on: May 31, 2022

4.5K
Analysis of Contact Interfaces for Single GaN Nanowire Devices
11:13

Analysis of Contact Interfaces for Single GaN Nanowire Devices

Published on: November 15, 2013

9.4K

Related Experiment Videos

Last Updated: Jun 26, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.4K
Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
08:03

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

Published on: May 31, 2022

4.5K
Analysis of Contact Interfaces for Single GaN Nanowire Devices
11:13

Analysis of Contact Interfaces for Single GaN Nanowire Devices

Published on: November 15, 2013

9.4K

Area of Science:

  • Materials Science
  • Physical Chemistry
  • Spectroscopy

Background:

  • Understanding charge transfer dynamics at interfaces is crucial for optoelectronic device performance.
  • Coherent nuclear motion significantly influences charge transfer timing and efficiency.
  • Donor-acceptor interfaces require precise structural control for signal analysis.

Purpose of the Study:

  • To elucidate the role of nuclear motion in charge transfer at a model donor-acceptor interface.
  • To correlate interfacial electronic processes with molecular vibrations.
  • To provide a microscopic understanding of ultrafast electron transfer.

Main Methods:

  • Utilized photocurrent detection in coherent multidimensional spectroscopy.
  • Prepared a well-ordered cobalt phthalocyanine-graphene (CoPc-Gr) interface.
  • Performed Fourier analysis of oscillatory signals and correlated with Raman spectroscopy.
  • Conducted first-principles characterization of vibrational coupling.

Main Results:

  • Observed ultrafast electron transfer at the CoPc-Gr interface via an interlayer mechanism.
  • Detected oscillating photocurrent signals modulated by coherent vibrations from excited CoPc states.
  • Identified specific molecular orbitals and vibrations promoting interfacial charge transfer.

Conclusions:

  • Coherent nuclear vibrations play a critical role in modulating ultrafast charge transfer at donor-acceptor interfaces.
  • The CoPc-Gr interface serves as a model system for studying fundamental charge transfer mechanisms.
  • This work provides insights for designing high-performance optoelectronic devices through vibrational control.