Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-12-20
Appl. Phys. Lett. 97, 243111 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
10 pages, 2 figures
Scientific paper
10.1063/1.3528341
We report radio frequency (rf) electrical readout of graphene mechanical resonators. The mechanical motion is actuated and detected directly by using a vector network analyzer, employing a local gate to minimize parasitic capacitance. A resist-free doubly clamped sample with resonant frequency ~ 34 MHz, quality factor ~ 10 000 at 77 K, and signal-to-background ratio of over 20 dB is demonstrated. In addition to being over two orders of magnitude faster than the electrical rf mixing method, this technique paves the way for use of graphene in rf devices such as filters and oscillators.
Chen Changyao
Deshpande Vikram V.
DiRenno Frank A.
Gondarenko Alexander
Heinz David B.
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