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Atomically thin mica flakes and their application as ultrathin insulating substrates for graphene
Andres Castellanos-Gomez, Magdalena Wojtaszek, Nikolaos Tombros +3
We show that it is possible to deposit, by mechanical exfoliation on SiO2/Si wafers, atomically thin mica flakes down to a single monolayer thickness. The optical contrast of these…
Carbon tips as electrodes for single-molecule junctions
Andres Castellanos-Gomez, Stefan Bilan, Linda A. Zotti +4
We study electron transport through single-molecule junctions formed by an octanethiol molecule bonded with the thiol anchoring group to a gold electrode and the opposing methyl en…
Force-gradient-induced mechanical dissipation of quartz tuning fork force sensors used in atomic force microscopy
Andres Castellanos-Gomez, Nicolas Agraït, Gabino Rubio-Bollinger
We have studied the dynamics of quartz tuning fork resonators used in atomic force microscopy taking into account mechanical energy dissipation through the attachment of the tuning…