Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Nov 15;5(11):eaax9301. doi: 10.1126/sciadv.aax9301

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Fig. 5 — (A) Snapshot of DLC-D after 500-ps friction. (B) Upper asperity being uplifted. (C) Two asperities are completely separated. Chemical and mechanical wear indicated in (C) correspond to hydrocarbon emission and carbon transfer, respectively.