Dissertation/Thesis Abstract

Computation of acoustic radiation and interparticle forces for spheres in microfluidic devices
by Sepehrirahnama, Shahrokh, Ph.D., National University of Singapore (Singapore), 2015, 157; 10006078
Abstract (Summary)

Acoustophoresis is used to manipulate the cells and particles in micro channels using ultrasonic waves. Acoustic radiation force is the nonlinear contact-free driving force generated by the ultrasound field and moves particles to the desired locations. Theoretical studies of the radiation force resulted in several formulae for the limit cases. However, there are inconsistencies between the theoretical and experimental results reported in the literature. Neglecting important factors, such as the number of particles and the acoustic streaming due to viscosity, is one of the main reasons for those inconsistencies. The acoustic streaming phenomenon is a stationary vortical flow induced by acoustic waves in a viscous fluid.

In this thesis, the main focus is to include the viscosity and streaming effects to the calculation of the radiation forces acting on multiple micro spheres in a channel. (Abstract shortened by UMI.)

Indexing (document details)
School: National University of Singapore (Singapore)
Department: Mechanical Engineering
School Location: Republic of Singapore
Source: DAI-B 77/06(E), Dissertation Abstracts International
Subjects: Mechanical engineering
Publication Number: 10006078
ISBN: 978-1-339-43940-2
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