NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan.
Nano Lett. 2015 Apr 8;15(4):2312-7. doi: 10.1021/nl5044264. Epub 2015 Mar 9.
A micromechanical resonator embedded with a nanomechanical resonator is developed whose dynamics can be captured by the coupled-Van der Pol-Duffing equations. Activating the nanomechanical resonator can dispersively shift the micromechanical resonance by more than 100 times its bandwidth and concurrently increase its energy dissipation rate to the point where it can even be deactivated. The coupled-Van der Pol-Duffing equations also suggest the possibility of self-oscillations. In the limit of strong excitation for the nanomechanical resonator, the dissipation in the micromechanical resonator can not only be reduced, resulting in a quality factor of >3× 10(6), it can even be eliminated entirely resulting in the micromechanical resonator spontaneously vibrating.
研制了一种嵌入纳米机械谐振器的微机械谐振器，其动力学可以用耦合范德波尔-杜芬方程来描述。激活纳米机械谐振器可以使微机械谐振器的带宽分散移动超过 100 倍，同时将其能量耗散率提高到足以使其失活的程度。耦合范德波尔-杜芬方程还暗示了自激振的可能性。在纳米机械谐振器强激励的极限下，微机械谐振器中的耗散不仅可以减少，导致品质因数>3×10(6)，甚至可以完全消除，导致微机械谐振器自发振动。
