Acoustic manipulation of active spherical carriers: Generation of negative radiation force

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• 作者：Majid Rajabi ; ^{majid_rajabi@iust.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Alireza Mojahed
• 关键词：Acoustic manipulation ; Handling strategy ; Active radiation force control ; Piezoelectric material
• 刊名：Annals of Physics
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：372
• 期：Complete
• 页码：182-200
• 全文大小：801 K

文摘

This paper examines theoretically a novel mechanism of generating negative (pulling) radiation force for acoustic manipulation of spherical carriers equipped with piezoelectric actuators in its inner surface. In this mechanism, the spherical particle is handled by common plane progressive monochromatic acoustic waves instead of zero-/higher- order Bessel beams or standing waves field. The handling strategy is based on applying a spatially uniform harmonic electrical voltage at the piezoelectric actuator with the same frequency of handling acoustic waves, in order to change the radiation force effect from repulsive (away from source) to attractive (toward source). This study may be considered as a start point for development of contact-free precise handling and entrapment technology of active carriers which are essential in many engineering and medicine applications.