High-quality Nanomechanical Resonator Based on a Defect-free Gold Nanowire
High-quality Nanomechanical Resonator Based on a Defect-free Gold Nanowire
- 주제(키워드) MEMS/NEMS , Metal nanowire , Nanomechanical resonator , Quality factor
- 발행기관 한국물리학회
- 발행년도 2013
- 총서유형 Journal
- UCI G704-000411.2013.63.2.013
- KCI ID ART001819871
- 본문언어 영어
초록/요약
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 = 4µm) resonators.
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