摘要
介绍了自行研制的一种磁致伸缩式单轴超声悬浮装置，用此装置实现了尺寸１—７ｍｍ的若干种金属、半导体和有机物在空气中的稳定悬浮和定位，可悬浮样品的密度高达１１３ｇ／ｃｍ３．为了优化谐振腔设计。
Abstract A single axis acoustic levitator driven by a magnetostrictive ultrasonic transducer was developed, which can stably levitate metallic, semiconducting and organic materials as dense as 11 3g/cm 3 in ground based laboratory. Two types of resonant chambers were investigated by using boundary element approach in order to well understand the effect of chamber geometry on the sound field and, more importantly, on the capability and stability of acoustic levitation. The calculated results and experimental research indicate that the chamber possessing both a planar and a conical reflecting surface can produce radial positioning forces at the lowest mode. This makes its positioning capability larger than that of the chamber with only a planar reflecting surface.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第2期250-256,共7页
Acta Physica Sinica
基金
国家自然科学基金
国家高技术研究发展计划资助
