Acoustofluidic black holes for multifunctional in-droplet particle manipulation

文献类型： 外文期刊

第一作者： Liu, Pengzhan

作者： Liu, Pengzhan;Yang, Kaichun;Naquin, Ty Downing;Hao, Nanjing;Bachman, Hunter;Zhang, Peiran;Huang, Tony Jun;Liu, Pengzhan;Huang, Huiyu;Chen, Jinyan;Ma, Qiuxia;Hu, Junhui;Tian, Zhenhua;Xu, Xiahong

作者机构：

期刊名称：SCIENCE ADVANCES （ 影响因子：14.957； 五年影响因子：16.895 ）

ISSN： 2375-2548

年卷期： 2022 年 8 卷 13 期

页码：

收录情况： SCI

摘要： Acoustic black holes offer superior capabilities for slowing down and trapping acoustic waves for various applications such as metastructures, energy harvesting, and vibration and noise control. However, no studies have considered the linear and nonlinear effects of acoustic black holes on micro/nanoparticles in fluids. This study presents acoustofluidic black holes (AFBHs) that leverage controlled interactions between AFBH-trapped acoustic wave energy and particles in droplets to enable versatile particle manipulation functionalities, such as translation, concentration, and patterning of particles. We investigated the AFBH-enabled wave energy trapping and wavelength shrinking effects, as well as the trapped wave energy-induced acoustic radiation forces on particles and acoustic streaming in droplets. This study not only fills the gap between the emerging fields of acoustofluidics and acoustic black holes but also leads to a class of AFBH-based in-droplet particle manipulation toolsets with great potential for many applications, such as biosensing, point-of-care testing, and drug screening.

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