The near-field acoustic levitation of high-mass rotors.
The near-field acoustic levitation of high-mass rotors.
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DOI：
10.1063/1.4898120
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发表时间：
2014-10
期刊：
影响因子：
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通讯作者：
Z. Hong;P. Lü;D. Geng;W. Zhai;N. Yan;B. Wei
中科院分区：
文献类型：
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作者：
Z. Hong;P. Lü;D. Geng;W. Zhai;N. Yan;B. Wei
本文证明了直径为40 mm、质量为0-1 kg的球形转子可以在近场声辐射力的作用下悬浮在距离超声振动凹表面数十微米远的地方。它们的转速超过3000转/分。建立了一个声学模型来计算悬浮系统的近场声辐射力和共振频率。该技术在声学陀螺仪的研制中具有潜在的应用前景。
Here we demonstrate that spherical rotors with 40 mm diameter and 0-1 kg mass can be suspended more than tens of micrometers away from an ultrasonically vibrating concave surface by near-field acoustic radiation force. Their rotating speeds exceed 3000 rpm. An acoustic model has been developed to evaluate the near-field acoustic radiation force and the resonant frequencies of levitation system. This technique has potential application in developing acoustic gyroscope.