Print Email Facebook Twitter Submicrosecond-timescale readout of carbon nanotube mechanical motion Title Submicrosecond-timescale readout of carbon nanotube mechanical motion Author Meerwaldt, H.B. Johnston, S.R. Van der Zant, H.S.J. Steele, G.A. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2013-08-02 Abstract We report fast readout of the motion of a carbon nanotube mechanical resonator. A close-proximity high electron mobility transistor amplifier is used to increase the bandwidth of the measurement of nanotube displacements from the kHz to the MHz regime. Using an electrical detection scheme with the nanotube acting as a mixer, we detect the amplitude of its mechanical motion at room temperature with an intermediate frequency of 6 MHz and a timeconstant of 780?ns, both up to five orders of magnitude faster than achieved before. The transient response of the mechanical motion indicates a ring-down time faster than our enhanced time resolution, placing an upper bound on the contribution of energy relaxation processes to the room temperature mechanical quality factor. Subject amplifierscarbon nanotubeshigh electron mobility transistorshigh-frequency effectsmicromechanical resonatorsQ-factorreadout electronics To reference this document use: http://resolver.tudelft.nl/uuid:ecab74f3-2383-448d-83cf-ef2271aa487f DOI https://doi.org/10.1063/1.4817755 Publisher American Institute of Physics ISSN 0003-6951 Source https://doi.org/10.1063/1.4817755 Source Applied Physics Letters, 103 (5), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 American Institute of Physics Files PDF vanderZant_2013.pdf 939.17 KB Close viewer /islandora/object/uuid:ecab74f3-2383-448d-83cf-ef2271aa487f/datastream/OBJ/view