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

¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Carbon-13 (¹³C) NMR: Overview01:10

Carbon-13 (¹³C) NMR: Overview

Carbon-13 is a naturally occurring NMR-active isotope of carbon with a low natural abundance of 1.1%. In contrast, carbon-12 is the most abundant isotope of carbon with zero nuclear spin. Therefore, it is NMR inactive. The gyromagnetic ratio of carbon-13 is smaller than that of protons. As a result, carbon-13 resonance is about 6000 times weaker than proton resonance. For a given magnetic field strength, the resonance frequency of carbon-13 is about one-fourth of the resonance frequency for...
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0, resulting in...
Electrostatic Boundary Conditions01:16

Electrostatic Boundary Conditions

Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
Induced Electric Fields01:23

Induced Electric Fields

The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...

You might also read

Related Articles

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

Sort by
Same author

Odd-even conductance oscillations in <i>meta</i>-cycloparaphenylenes.

Science advances·2026
Same author

Molecular Kondo Lattice with Pure π-Magnetism on a Superconductor.

The journal of physical chemistry letters·2026
Same author

Single-Channel Saturation at the Quantum Conductance Limit in Single-Molecule Junctions.

Journal of the American Chemical Society·2026
Same author

Atomic-Scale Engineering of <i>d-</i>π-<i>d</i> Spin Interaction in Metal-Organic Architectures.

Journal of the American Chemical Society·2025
Same author

Quantum Transport in Nitrogen-Doped Nanoporous Graphenes.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Regulation of Reaction Pathways in Coordinated Chains by Directional Mechanical Force.

ACS nano·2025
Same journal

Cross-scale design of chemosensor arrays: from molecular self-assembly in water to paper-based devices for metal ion detection.

Beilstein journal of nanotechnology·2026
Same journal

Sustainable fabrication of 2D-based devices through reuse of substrates with microfabricated electrodes.

Beilstein journal of nanotechnology·2026
Same journal

Tuning the electronic properties of defect-rich MoS<sub>2</sub>.

Beilstein journal of nanotechnology·2026
Same journal

Glycerol photoelectrochemical oxidation reaction at carbon nitrides/BiVO<sub>4</sub> materials.

Beilstein journal of nanotechnology·2026
Same journal

Restorative potential of laser-synthesized silver nanoparticles with <i>Salvia officinalis</i> for periodontal disease treatment: an in vitro study.

Beilstein journal of nanotechnology·2026
Same journal

Substrate-dependent pore formation in molybdenum disulfide monolayers under ion irradiation.

Beilstein journal of nanotechnology·2026
See all related articles

Related Experiment Video

Updated: May 25, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Current-induced dynamics in carbon atomic contacts.

Jing-Tao Lü1, Tue Gunst, Per Hedegård

  • 1DTU-Nanotech, Dept. of Micro- and Nanotechnology, Technical University of Denmark (DTU), Ørsteds Plads, Bldg. 345E, DK-2800 Lyngby, Denmark.

Beilstein Journal of Nanotechnology
|January 20, 2012
PubMed
Summary
This summary is machine-generated.

We developed a new method to predict molecular contact stability under electric current, revealing current-induced instabilities in carbon chains at experimental voltages. This advances understanding of atomic-scale electronic device behavior.

Keywords:
carbon-nanoelectronicscurrent-induced forcesmolecular contactsnanoscale Joule heatingsemiclassical Langevin equation

More Related Videos

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
09:20

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

Related Experiment Videos

Last Updated: May 25, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
09:20

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

Area of Science:

  • Atomic and Molecular Physics
  • Condensed Matter Physics
  • Materials Science

Background:

  • The influence of electric current on atomic motion and its impact on molecular contact stability are not fully understood.
  • Nonconservative (NC) and Berry-phase derived (BP) forces are crucial mechanisms affecting molecular-scale contacts.
  • Graphene electrodes offer a promising platform for studying these current-induced effects in molecular junctions.

Purpose of the Study:

  • To investigate current-induced vibrational dynamics in atomic carbon chains bridging graphene electrodes.
  • To develop a predictive model for device stability based on current-induced forces.
  • To explore the role of gate voltage in controlling current and inducing instabilities.

Main Methods:

  • Utilized a semi-classical Langevin approach combined with Density Functional Theory (DFT) calculations.
  • Employed tight-binding and Brenner potential for Langevin-type molecular dynamics.
  • Incorporated Joule heating effects into the molecular dynamics simulations.

Main Results:

  • Device stability can be predicted using modes from the Langevin equation, including current-induced forces.
  • Gate voltage independently controls current, enabling exploration of NC/BP force-induced instabilities.
  • Anharmonic interactions mediate energy redistribution, crucial for describing electrical heating in molecular dynamics.

Conclusions:

  • A semiclassical Langevin equation approach was developed for exploring current-induced dynamics and instabilities.
  • The study identified instabilities in the carbon-chain system at experimentally relevant bias and gate voltages.