Multicurvature viscous streaming: Flow topology and particle manipulation

Yashraj Bhosale, Giridar Vishwanathan, Gaurav Upadhyay, Tejaswin Parthasarathy, Gabriel Juarez, Mattia Gazzola

Research output: Contribution to journalArticlepeer-review

Abstract

Viscous streaming refers to the rectified, steady flows that emerge when a liquid oscillates around an immersed microfeature. Relevant to microfluidics, the resulting local, strong inertial effects allow manipulation of fluid and particles effectively, within short time scales and compact footprints. Nonetheless, practically, viscous streaming has been stymied by a narrow set of achievable flow topologies, limiting scope and application. Here, by moving away from classically employed microfeatures of uniform curvature, we experimentally show how multicurvature designs, computationally obtained, give rise, instead, to rich flow repertoires. The potential utility of these flows is then illustrated in compact, robust, and tunable devices for enhanced manipulation, filtering, and separation of both synthetic and biological particles. Overall, our mixed computational/experimental approach expands the scope of viscous streaming application, with opportunities in manufacturing, environment, health, and medicine, from particle self-assembly to microplastics removal.

Original languageEnglish (US)
Article numbere2120538119
JournalProceedings of the National Academy of Sciences of the United States of America
Volume119
Issue number36
DOIs
StatePublished - Sep 6 2022

Keywords

  • computational inertial microfluidics
  • filtration
  • particle manipulation
  • viscous streaming

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Multicurvature viscous streaming: Flow topology and particle manipulation'. Together they form a unique fingerprint.

Cite this