Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Acoustophoretic control of microparticles using a multi-wavelength surface acoustic wave device
Submission Author:
Fadi Dohnal , Vorarlberg , Austria
Co-Authors:
Elisabeth Kostal, Fadi Dohnal
Presenter: Fadi Dohnal
doi://10.26678/ABCM.DINAME2023.DIN2023-0131
Abstract
Standing surface acoustic waves (SSAWs) are widely used in microfluidic devices to manipulate various cells and micro/nano-objects. The physical interplay between electromechanical fields of the piezoelectric substrate and acoustofluidic effects including fluid-solid interactions are exploited for achieving particle focusing and separation. The common implementation of SSAWs in microfluidics is via single-pitch interdigital transducers (IDTs) with a single excitation frequency. Recently, dual-pitch IDTs have been suggested that allow for generating two different SSAWs in the same region of action. This idea has great potential for versatile applications and leads to more complex functionality of more compact versions of existing designs. In this work, we go one step further and investigate numerically the possibility of a multi-frequency SSAW device with multi-pitch IDTs.
Keywords
Numerical simulation, acoustofluidic, microtechnology, SAW
