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arXiv · 2108.04779

Acoustically Manipulating Internal Structure of Disk-in-Sphere Endoskeletal Droplets

Gazendra Shakya·Tao Yang·Yu Gao·Apresio K. Fajrial·Baowen Li·Massimo Ruzzene·Mark A. Borden·Xiaoyun Ding
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Abstract

Manipulation of micro/nano particles has been well studied and demonstrated by optical, electromagnetic, and acoustic approaches, or their combinations. Manipulation of internal structure of droplet/particle is rarely explored and remains challenging due to its complicated nature. Here we demonstrated the manipulation of internal structure of disk-in-sphere endoskeletal droplets using acoustic wave for the first time. We developed a model to investigate the physical mechanisms behind this novel phenomenon. Theoretical analysis of the acoustic interactions indicated that these assembly dynamics arise from a balance of the primary and secondary radiation forces. Additionally, the disk orientation was found to change with acoustic driving frequency, which allowed on-demand, reversible adjusting disk orientations with respect to the substrate. This novel dynamic behavior leads to unique reversible arrangements of the endoskeletal droplets and their internal architecture, which may provide a new avenue for directed assembly of novel hierarchical colloidal architectures and intracellular organelles or intra-organoid structures.

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Gazendra Shakya, Tao Yang, Yu Gao, Apresio K. Fajrial, Baowen Li, Massimo Ruzzene, Mark A. Borden, Xiaoyun Ding. 2021-08-10. Acoustically Manipulating Internal Structure of Disk-in-Sphere Endoskeletal Droplets. https://doi.org/10.1038/s41467-022-28574-4

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