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

Network Covalent Solids02:18

Network Covalent Solids

13.5K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
13.5K
  1. Home
  3. Research Domains
  5. Physical Sciences
  7. Condensed Matter Physics
  9. Surface Properties Of Condensed Matter
  11. Why Is Superlubricity Of Diamond-like Carbon Rare At Nanoscale?

Why is Superlubricity of Diamond-Like Carbon Rare at Nanoscale?

Seokhoon Jang1, Ana G Colliton2, Hind S Flaih2

  • 1Department of Chemical Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA, 16802, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|March 28, 2024

Related Experiment Videos

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
08:58

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

3.0K
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
09:13

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

Published on: April 1, 2017

13.6K
Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
08:59

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

Published on: April 15, 2013

15.0K

View abstract on PubMed

Summary
This summary is machine-generated.

Hydrogenated diamond-like carbon (HDLC) achieves superlubricity by forming graphitic transfer films. However, nanoscale contacts push these films out, hindering ultralow friction at this scale.

Area of Science:

  • Materials Science
  • Tribology
  • Nanotechnology

Background:

  • Hydrogenated diamond-like carbon (HDLC) is a solid lubricant known for superlubricity.
  • HDLC shows friction reduction in macroscale tests but not consistently at the nanoscale.

Purpose of the Study:

  • Investigate the scale-dependent superlubricity of HDLC.
  • Understand why ultralow friction is rare at the nanoscale.

Main Methods:

  • Analysis of HDLC friction at different scales.
  • Raman spectroscopy of transfer films.
  • Ex-situ analysis of nanoscale contact areas.

Main Results:

  • Nanoscale wear depth exceeds the oxidized layer thickness, suggesting its removal.
Keywords:
contact scalegraphitizationhydrogenated diamond‐like carbonsuperlubricity

Related Experiment Videos

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
08:58

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

3.0K
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
09:13

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

Published on: April 1, 2017

13.6K
Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
08:59

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

Published on: April 15, 2013

15.0K
  • Shear-induced graphitization occurs at nanoscale shear stresses.
  • Graphitic transfer films are not detected after nanoscale tests, likely expelled from the contact.

    • Conclusions:

    • Retention of graphitic transfer films is essential for HDLC superlubricity.
    • Instability of transfer films in small contact areas prevents nanoscale superlubricity.
    transfer film