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

Electrical Conductivity01:13

Electrical Conductivity

1.1K
In perfect conductors, the electric field inside is always zero due to the abundance of free electrons, which nullify any field by flowing. As a result, any residual charge resides on the surface.
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
1.1K
Carrier Transport01:21

Carrier Transport

412
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:
412
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.3K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.3K

You might also read

Related Articles

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

Sort by
Same author

A Liver-Targeted Copper Supplement Reduces Metabolic Dysfunction-Associated Liver Steatosis by Increasing Lipolysis and Fatty Acid Oxidation.

bioRxiv : the preprint server for biology·2026
Same author

Conversions of Tungsten(IV) Cycloalkene Complexes to Metathesis-Active Cycloalkylidene Complexes Are Catalyzed by Cycloalkene and Can be Inhibited by Cycloalkene.

Angewandte Chemie (International ed. in English)·2026
Same author

Highly Stable Mn(V)-Nitrido and Nitrogen-Atom Transfer Reactivity within a <i>de Novo</i> Protein.

Journal of the American Chemical Society·2026
Same author

Cationic imidazolium macrocycles enable array-based, site-selective optical detection of peptide phosphorylation.

Organic & biomolecular chemistry·2026
Same author

Flexible dimethylsilylene bridges in silicon quantum dot-anthracene adducts promote triplet energy transfer.

Chemical science·2026
Same author

Highly Stable Mn(V)-Nitrido and Nitrogen-Atom Transfer Reactivity within a <i>De Novo</i> Protein.

bioRxiv : the preprint server for biology·2026

Related Experiment Video

Updated: Jun 11, 2025

Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.4K

Single-Molecule Conductance of Staffanes.

Ashley E Pimentel1, Lan D Pham1, Veronica Carta1

  • 1Department of Chemistry, University of California, 92521, Riverside, California, USA.

Angewandte Chemie (International Ed. in English)
|September 30, 2024
PubMed
Summary

Staffane oligomers exhibit unique quantum transport properties due to their strained bicyclic structure, showing enhanced conductivity compared to alkane analogs. These findings highlight bicyclic ring strain

Keywords:
molecular electronicsquantum transportsingle molecule electronicsstaffanestrain

More Related Videos

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

9.5K
Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
11:25

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications

Published on: April 21, 2016

11.1K

Related Experiment Videos

Last Updated: Jun 11, 2025

Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.4K
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

9.5K
Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
11:25

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications

Published on: April 21, 2016

11.1K

Area of Science:

  • Molecular electronics
  • Quantum transport phenomena
  • Organic chemistry

Background:

  • Single-molecule junctions are crucial for understanding charge transport in molecular systems.
  • Alkanes and other sigma-bonded molecules serve as benchmarks for molecular wires.
  • The influence of molecular structure, particularly strain, on electronic properties is an active area of research.

Purpose of the Study:

  • To investigate the quantum transport characteristics of [n]staffane (bicyclopentane) oligomers in single-molecule junctions.
  • To elucidate the role of bicyclic ring strain in modulating charge transport properties.
  • To compare the conductivity of staffane oligomers with alkane chain analogs.

Main Methods:

  • Conductance measurements using the scanning tunneling microscopy break junction (STM-BJ) technique.
  • Density functional theory (DFT) calculations to analyze electronic structure and charge transport mechanisms.
  • Systematic variation of staffane oligomer length to study length-dependent effects.

Main Results:

  • Staffanes exhibit a shallower conductance decay (β=0.84±0.02 n⁻¹) than alkane analogs (β=0.96±0.03 n⁻¹), indicating higher conductivity on a per-atom basis.
  • DFT calculations reveal that bicyclic ring strain in staffanes lowers the HOMO-2 energy, improving alignment with gold electrode Fermi energy.
  • Short monostaffanes show reduced conductivity due to steric effects enforcing insulating orientations, which are mitigated in longer oligomers.
  • Staffane wires accommodate axial mechanical strain through "rod-bending".

Conclusions:

  • Bicyclic ring strain in staffanes enhances charge transmission in saturated molecular wires.
  • Staffanes represent a promising class of molecules for molecular electronics applications.
  • The STM-BJ technique is effective for probing the stereoelectronic properties of molecules in junctions.