Abstract
Nanomechanical resonators were fabricated using defect-free single-crystalline Au nanowires (NWs), and their mechanical properties were investigated by using the magneto-motive detection method. The fabricated Au NW resonators exhibited a resonance frequency of 33-119 MHz and a quality factor of 1800 ∼ 11000, depending on the resonator's dimensions. Compared to its amorphous film counterpart, the Au NW resonator showed noticeable increases in both the resonance frequency and the quality factor. Also observed was a significant increase in the dynamic range for the NW resonator. These improvements could be attributed to low and uniform energy dissipation by the defect-free single-crystalline Au NW resonator. In addition, the length dependence of the nonlinear characteristics was observed. Mechanical softening was observed in the case of short (l = 2 μm and 3 μm) resonators while mechanical hardening was observed in the case of long (l = 4 μm) resonators.
Original language | English (US) |
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Pages (from-to) | 263-268 |
Number of pages | 6 |
Journal | Journal of the Korean Physical Society |
Volume | 63 |
Issue number | 2 |
DOIs | |
State | Published - Jul 2013 |
Bibliographical note
Funding Information:This work is supported by the National Research Foundation of Korea under contract number 2008-2002795.
Keywords
- MEMS/NEMS
- Metal nanowire
- Nanomechanical resonator
- Quality factor