| Stamp transferred suspended graphene mechanical resonators for radio-frequency electrical readout. | |
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MedLine Citation:
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PMID: 22141577 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We present a simple micromanipulation technique to transfer suspended graphene flakes onto any substrate and to assemble them with small localized gates into mechanical resonators. The mechanical motion of the graphene is detected using an electrical, radio-frequency (RF) reflection readout scheme where the time-varying graphene capacitor reflects a RF carrier at f=5-6 GHz producing modulation sidebands at f±f<sub>m</sub>. A mechanical resonance frequency up to f<sub>m</sub>=178 MHz is demonstrated. We find both hardening/softening Duffing effects on different samples, and obtain a critical amplitude of ∽40 pm for the onset of nonlinearity in graphene mechanical resonators. Measurements of the quality factor of the mechanical resonance as a function of DC bias voltage V<sub>DC</sub> indicate that dissipation due to motion-induced displacement currents in graphene electrode is important at high frequencies and large V<sub>DC</sub>. |
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Authors:
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Xuefeng Song; Mika Oksanen; Mika Antero Sillanpaa; Harold G Craighead; Jeevak M Parpia; Pertti J Hakonen |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-5 |
Journal Detail:
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Title: Nano letters Volume: - ISSN: 1530-6992 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101088070 Medline TA: Nano Lett Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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