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

Feedback Inhibition00:46

Feedback Inhibition

44.1K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
44.1K
P-N junction01:11

P-N junction

1.7K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.7K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

1.4K
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...
1.4K
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

907
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
907
Field Effect Transistor01:29

Field Effect Transistor

1.8K
Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
1.8K
Biasing of FET01:22

Biasing of FET

1.0K
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
1.0K

You might also read

Related Articles

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

Sort by
Same author

Fluvoxamine combined with lenvatinib enhances anti-hepatocellular carcinoma immunity by promoting M1 macrophage and T-cell infiltration.

Scientific reports·2026
Same author

Pharmacokinetics and anti-tumor efficacy of transarterial chemoembolization using small-particle lenvatinib-loaded beads in a rabbit VX2 liver tumor model.

Quantitative imaging in medicine and surgery·2026
Same author

An integrated molecular classification system identifies distinct prognostic clusters of non-muscle-invasive bladder cancer.

Functional & integrative genomics·2026
Same author

Interactive and joint effects of multiple meteorological and air pollution exposures on hand, foot and mouth disease risk in western China: a time-series analysis.

BMJ public health·2026
Same author

Reversible Broad-Bias Photoswitching of DNA Molecular Junctions via Azobenzene-Induced π‑Stack Disruption.

JACS Au·2026
Same author

Conformational bifurcation drives dual transport regimes in molecular junctions: Unsupervised machine learning insights.

Smart molecules : open access·2026
Same journal

DeepDOX1: A Dual-Drive Framework Integrating Deep Learning and First-Principles Quantum Chemistry for Drug-Protein Affinity Prediction.

JACS Au·2026
Same journal

Catalyst-Controlled Regiodivergent C-H Olefination of Furanyl Carbamates through a Rational Approach.

JACS Au·2026
Same journal

Charting the Biosynthetic Landscape of Hybrid Polyketide-Nonribosomal Peptide-Specialized Lipids.

JACS Au·2026
Same journal

Valence-State-Dependent Surface Lattice Oxygen in CeO<sub>2</sub>‑Modified VPO Catalysts: Elucidating the Mechanism of <i>n</i>‑Butane Selective Oxidation to Maleic Anhydride.

JACS Au·2026
Same journal

Quantitative Insights into Pressure-Dependent Mass Transport and Reaction Kinetics in Electrochemical CO<sub>2</sub> Reduction.

JACS Au·2026
Same journal

3‑Methylthiopropionic Acid Kills Carbapenem-Resistant <i>Klebsiella pneumoniae</i> by Disrupting Membrane Integrity and Bioenergetics.

JACS Au·2026
See all related articles

Related Experiment Video

Updated: May 1, 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

8.3K

Interface Feedback Effect in Molecular Tunnel Junctions.

Yunxia Feng1,2, Jinwei Chen1, Ioan Bâldea3

  • 1Department of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion-Israel Institute of Technology, Shantou, Guangdong 515063, China.

JACS Au
|March 28, 2025
PubMed
Summary
This summary is machine-generated.

The metal-molecule contacts in molecular tunnel junctions are not independent. Tip electrode choice significantly impacts substrate electrode coupling, revealing unexpected complexity in these electronic devices.

More Related Videos

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

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

Published on: May 27, 2018

8.4K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

10.2K

Related Experiment Videos

Last Updated: May 1, 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

8.3K
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

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

Published on: May 27, 2018

8.4K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

10.2K

Area of Science:

  • Molecular Electronics
  • Nanotechnology
  • Surface Science

Background:

  • Understanding metal-molecule contacts is crucial for molecular tunnel junctions.
  • Previous studies have not fully elucidated the interactions at these interfaces.

Purpose of the Study:

  • Investigate electrical contact effects in molecular tunnel junctions.
  • Examine the interdependence of metal-molecule interfaces.

Main Methods:

  • Utilized conducting probe atomic force microscopy (CP-AFM).
  • Studied junctions with oligophenylene and alkyl dithiols on Ag, Au, and Pt electrodes.

Main Results:

  • Observed a "talking" effect between metal-molecule interfaces.
  • Tip electrode metal choice influences substrate electrode coupling, and vice versa.
  • Interdependence did not correlate with work function or electronegativity.

Conclusions:

  • Electrical contacts in molecular tunnel junctions exhibit unexpected complexity.
  • This interdependence must be considered in theoretical models and device design.
  • New insights for designing molecular electronic functions.