Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Metal-Semiconductor Junctions

Metal-Semiconductor Junctions

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 semiconductor's...

The de Broglie Wavelength

The de Broglie Wavelength

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...

Molecular Orbital Theory I

Molecular Orbital Theory I

Overview of Molecular Orbital Theory

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...

Atomic Absorption Spectroscopy: Interference

Atomic Absorption Spectroscopy: Interference

Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...

You might also read

Related Articles

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

Sort by

Same author

Defects and defect-mediated engineering of two-dimensional materials: challenges and open questions.

Beilstein journal of nanotechnology·2026

Same author

Large-Scale Integration of Experimental and Computational Data for 2D Materials.

ACS nano·2026

Same author

Defect-Assisted Recombination in Semiconductors and Photovoltaic Device Parameters from First Principles.

Journal of the American Chemical Society·2025

Same author

Computational discovery and experimental validation of high-refractive index HfS<sub>2</sub> nanoresonators.

Science advances·2025

Same author

Roadmap for Photonics with 2D Materials.

ACS photonics·2025

Same author

Taskblaster: a generic framework for automated computational workflows.

Digital discovery·2025

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

The relation between structure and quantum interference in single molecule junctions.

Troels Markussen¹, Robert Stadler, Kristian S Thygesen

¹Center for Atomic-scale Materials Design, Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.

|October 1, 2010

Summary

Quantum interference (QI) in molecular electronics is now predictable. This study links molecular structure topology to QI effects, offering a simple graphical scheme to identify transmission antiresonances in aromatic systems.

More Related Videos

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Related Experiment Videos

Last Updated: Jun 8, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Area of Science:

Quantum chemistry
Molecular electronics
Condensed matter physics

Background:

Quantum interference (QI) is crucial for single-molecule electronic devices.
Existing methods for analyzing QI lack simple structure-property guidelines.
Understanding QI-structure relationships is key for designing molecular electronic components.

Purpose of the Study:

To establish simple guidelines linking molecular structure to QI effects.
To develop a graphical scheme for predicting QI-induced transmission antiresonances.
To validate the scheme against first-principles calculations.

Main Methods:

Analysis of π-system topology in aromatic molecules.
Development of a graphical scheme for QI prediction.
First-principles quantum transport calculations.
Tight-binding model simulations.

Main Results:

QI in aromatic molecules is directly related to π-system topology.
A simple graphical scheme accurately predicts QI-induced transmission antiresonances.
The scheme's validity is confirmed for anthraquinone and cross-conjugated molecular wires.

Conclusions:

A straightforward method to predict QI effects based on molecular topology is established.
This work provides essential guidelines for designing molecular electronic devices with desired quantum interference properties.
The findings facilitate the rational design of novel molecular systems for advanced electronic applications.