Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4857616
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Funding
- Swiss Nanoscience Institute (SNI)
- Swiss National Science Foundation
- nanotera.ch
- NCCR-QSIT
- ERC project QUEST
- FP7 projects Symone
- Graphene Flagship
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We performed radiofrequency (RF) reflectometry measurements at 2-4 GHz on electrolyte-gated graphene field-effect transistors, utilizing a tunable stub-matching circuit for impedance matching. We demonstrate that the gate voltage dependent RF resistivity of graphene can be deduced, even in the presence of the electrolyte which is in direct contact with the graphene layer. The RF resistivity is found to be consistent with its DC counterpart in the full gate voltage range. Furthermore, in order to access the potential of high-frequency sensing for applications, we demonstrate time-dependent gating in solution with nanosecond time resolution. (C) 2014 AIP Publishing LLC.
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