Domain-dependent surface adhesion in twisted few-layer graphene: Platform for moir\'e-assisted chemistry
Nano Lett. 2023, 23, 8, 3137-3143 Twisted van der Waals multilayers are widely regarded as a rich platform to access novel electronic phases, thanks to the multiple degrees of freedom such as layer thickness and twist angle that allow control of their electronic and chemical properties. Here, we pro...
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Main Authors | , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
19.10.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Nano Lett. 2023, 23, 8, 3137-3143 Twisted van der Waals multilayers are widely regarded as a rich platform to
access novel electronic phases, thanks to the multiple degrees of freedom such
as layer thickness and twist angle that allow control of their electronic and
chemical properties. Here, we propose that the stacking domains that form
naturally due to the relative twist between successive layers act as an
additional "knob" for controlling the behavior of these systems, and report the
emergence and engineering of stacking domain-dependent surface chemistry in
twisted few-layer graphene. Using mid-infrared near-field optical microscopy
and atomic force microscopy, we observe a selective adhesion of metallic
nanoparticles and liquid water at the domains with rhombohedral stacking
configurations of minimally twisted double bi- and tri-layer graphene.
Furthermore, we demonstrate that the manipulation of nanoparticles located at
certain stacking domains can locally reconfigure the moir\'e superlattice in
their vicinity at the {\mu}m-scale. In addition, we report first-principles
simulations of the energetics of adhesion of metal atoms and water molecules on
the stacking domains in an attempt to elucidate the origin of the observed
selective adhesion. Our findings establish a new approach to controlling
moir\'e-assisted chemistry and nanoengineering. |
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DOI: | 10.48550/arxiv.2210.10843 |