TY - JOUR
T1 - Dynamically tuning friction at the graphene interface using the field effect
AU - Greenwood, Gus
AU - Kim, Jin Myung
AU - Nahid, Shahriar Muhammad
AU - Lee, Yeageun
AU - Hajarian, Amin
AU - Nam, SungWoo
AU - Espinosa-Marzal, Rosa M.
N1 - We thank J. Yus for help in obtaining SEM images of AFM tips after use and B. Fu for assistance with stick-slip measurements in additional AFM systems. This research was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois. This material is based upon work supported by the National Science Foundation under Grant NSF CMMI-1904216 (R.E.M. and S.N.).
We thank J. Yus for help in obtaining SEM images of AFM tips after use and B. Fu for assistance with stick-slip measurements in additional AFM systems. This research was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois. This material is based upon work supported by the National Science Foundation under Grant NSF CMMI-1904216 (R.E.M. and S.N.).
PY - 2023/12
Y1 - 2023/12
N2 - Dynamically controlling friction in micro- and nanoscale devices is possible using applied electrical bias between contacting surfaces, but this can also induce unwanted reactions which can affect device performance. External electric fields provide a way around this limitation by removing the need to apply bias directly between the contacting surfaces. 2D materials are promising candidates for this approach as their properties can be easily tuned by electric fields and they can be straightforwardly used as surface coatings. This work investigates the friction between single layer graphene and an atomic force microscope tip under the influence of external electric fields. While the primary effect in most systems is electrostatically controllable adhesion, graphene in contact with semiconducting tips exhibits a regime of unexpectedly enhanced and highly tunable friction. The origins of this phenomenon are discussed in the context of fundamental frictional dissipation mechanisms considering stick slip behavior, electron-phonon coupling and viscous electronic flow.
AB - Dynamically controlling friction in micro- and nanoscale devices is possible using applied electrical bias between contacting surfaces, but this can also induce unwanted reactions which can affect device performance. External electric fields provide a way around this limitation by removing the need to apply bias directly between the contacting surfaces. 2D materials are promising candidates for this approach as their properties can be easily tuned by electric fields and they can be straightforwardly used as surface coatings. This work investigates the friction between single layer graphene and an atomic force microscope tip under the influence of external electric fields. While the primary effect in most systems is electrostatically controllable adhesion, graphene in contact with semiconducting tips exhibits a regime of unexpectedly enhanced and highly tunable friction. The origins of this phenomenon are discussed in the context of fundamental frictional dissipation mechanisms considering stick slip behavior, electron-phonon coupling and viscous electronic flow.
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U2 - 10.1038/s41467-023-41375-7
DO - 10.1038/s41467-023-41375-7
M3 - Article
C2 - 37726306
AN - SCOPUS:85171670672
SN - 2041-1723
VL - 14
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 5801
ER -