Acoustically Manipulating Internal Structure of Disk-in-Sphere Endoskeletal Droplets
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.
Keywords
Cite
@article{arxiv.2108.04779,
title = {Acoustically Manipulating Internal Structure of Disk-in-Sphere Endoskeletal Droplets},
author = {Gazendra Shakya and Tao Yang and Yu Gao and Apresio K. Fajrial and Baowen Li and Massimo Ruzzene and Mark A. Borden and Xiaoyun Ding},
journal= {arXiv preprint arXiv:2108.04779},
year = {2022}
}