Uni Jena - HomePage
MfM  
Atomic-scale sliding friction on graphene in water
12.04.2016 12:00

Authors:

  • J.G. Vilhena, Carlos Pimentel, Patricia Pedraz, Feng Luo, Pedro A. Serena, Carlos M. Pina, Enrico Gnecco, Rubén Pérez

Journal:

  • ACS Nano 10(4) (2016) 4288
    DOI: 10.1021/acsnano.5b07825
    Publication Date (Web): March 16, 2016
    Copyright © 2016 American Chemical Society

Abstract:

  • The sliding of a sharp nanotip on graphene completely immersed in water is investigated by molecular dynamics (MD) and atomic force microscopy. MD simulations predict that the atomic-scale stick-slip is almost identical to that found in ultrahigh vacuum. Furthermore, they show that water plays a purely stochastic role in sliding (solid-to-solid) friction. These observations are substantiated by friction measurements on graphene grown on Cu and Ni, where, oppositely of the operation in air, lattice resolution is readily achieved. Our results promote friction force microscopy in water as a robust alternative to ultra-high-vacuum measurements.

Gleitreibung

The sliding of a sharp nanotip on graphene completely immersed in water is investigated by molecular dynamics and atomic force microscopy.

| 2018 © hmg |
| intranet | contact | legal notice | site map | search |
| deutsch | |
| FSU | OSIM |