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 Experiment Video

Updated: Jul 7, 2026

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

Measuring the work function of carbon nanotubes with thermionic method.

Peng Liu1, Qin Sun, Feng Zhu

  • 1Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China. Liup01@mails.thu.edu.cn

Nano Letters
|January 30, 2008
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Evaluation of demographic factors affecting predictability of the sacro-femoral-pubic angle in healthy adolescents.

Journal of anatomy·2014
Same author

Identification of sumoylated proteins in the silkworm Bombyx mori.

International journal of molecular sciences·2014
Same author

Synergistic antitumor activity of withaferin A combined with oxaliplatin triggers reactive oxygen species-mediated inactivation of the PI3K/AKT pathway in human pancreatic cancer cells.

Cancer letters·2014
Same author

[Association between -1296T/C and -915A/G polymorphisms of matrix metalloproteinase inhibitor-3 gene and atherosclerotic cerebral infarction in an ethnic Han Chinese population].

Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics·2014
Same author

A preliminary study on surgery for hepatocellular carcinoma patients with portal hypertension.

American journal of surgery·2014
Same author

[Development of CBCT technique and its application on dental age assessment].

Fa yi xue za zhi·2014

The work function of carbon nanotubes (CNTs) is consistent across sidewalls regardless of diameter or wall number. However, CNT tips exhibit a lower work function than sidewalls, indicating non-uniform work function distribution.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Science

Background:

  • The work function of carbon nanotubes (CNTs) is a critical property influencing their electronic behavior.
  • Previous studies suggested potential dependencies of CNT work function on diameter and wall structure, as well as variations between tips and sidewalls.

Purpose of the Study:

  • To experimentally measure and compare the work function of single-walled, double-walled, and multiwalled carbon nanotubes.
  • To investigate the influence of CNT diameter and wall number on work function.
  • To determine if CNT tips have a different work function compared to their sidewalls.

Main Methods:

  • Thermionic emission measurements were conducted on bundles of single-walled, double-walled, and multiwalled carbon nanotubes.

More Related Videos

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
09:12

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy
08:10

Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy

Published on: February 5, 2017

Related Experiment Videos

Last Updated: Jul 7, 2026

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

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
09:12

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy
08:10

Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy

Published on: February 5, 2017

  • The measurements focused on the middle sections of the CNT bundles to analyze sidewall properties.
  • Comparative analysis was performed on bundles with and without exposed tips in the measurement area.

    • Main Results:

    • The sidewall work function for all investigated CNT types (single-walled, double-walled, multiwalled) was found to be consistently around 4.7-4.9 eV.
    • No significant influence of CNT diameter or the number of walls on the sidewall work function was observed.
    • Bundles with exposed tips in the middle exhibited a lower measured work function compared to those without tips, indicating a smaller work function for tips.

    Conclusions:

    • The work function of carbon nanotube sidewalls is largely independent of diameter and wall number.
    • Carbon nanotube tips possess a lower work function than their sidewalls.
    • The presence of tips leads to a non-uniform work function distribution along the carbon nanotube bundle, affecting thermionic emission characteristics.