Huygens-Fresnel Acoustic Interference and the Development of Robust Time-Averaged Patterns from Traveling Surface Acoustic Waves

Citsabehsan Devendran, David J. Collins, Ye Ai, and Adrian Neild
Phys. Rev. Lett. 118, 154501 – Published 12 April 2017
PDFHTMLExport Citation

Abstract

Periodic pattern generation using time-averaged acoustic forces conventionally requires the intersection of counterpropagating wave fields, where suspended micro-objects in a microfluidic system collect along force potential minimizing nodal or antinodal lines. Whereas this effect typically requires either multiple transducer elements or whole channel resonance, we report the generation of scalable periodic patterning positions without either of these conditions. A single propagating surface acoustic wave interacts with the proximal channel wall to produce a knife-edge effect according to the Huygens-Fresnel principle, where these cylindrically propagating waves interfere with classical wave fronts emanating from the substrate. We simulate these conditions and describe a model that accurately predicts the lateral spacing of these positions in a robust and novel approach to acoustic patterning.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 10 October 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.154501

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Fluid DynamicsGeneral PhysicsInterdisciplinary Physics

Authors & Affiliations

Citsabehsan Devendran1, David J. Collins2, Ye Ai2, and Adrian Neild1,*

  • 1Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Melbourne 3800, Victoria, Australia
  • 2Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore

  • *adrian.neild@monash.edu

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 118, Iss. 15 — 14 April 2017

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×