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

Citsabehsan Devendran, David J. Collins, Ye Ai, Adrian Neild

Research output: Contribution to journalArticleResearchpeer-review

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.

Original languageEnglish
Article number154501
Number of pages6
JournalPhysical Review Letters
Volume118
Issue number15
DOIs
Publication statusPublished - 12 Apr 2017

Cite this

@article{be1cf7e57c4c4cb2955c3bef6b438d63,
title = "Huygens-Fresnel Acoustic Interference and the Development of Robust Time-Averaged Patterns from Traveling Surface Acoustic Waves",
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.",
author = "Citsabehsan Devendran and Collins, {David J.} and Ye Ai and Adrian Neild",
year = "2017",
month = "4",
day = "12",
doi = "10.1103/PhysRevLett.118.154501",
language = "English",
volume = "118",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "APS",
number = "15",

}

Huygens-Fresnel Acoustic Interference and the Development of Robust Time-Averaged Patterns from Traveling Surface Acoustic Waves. / Devendran, Citsabehsan; Collins, David J.; Ai, Ye ; Neild, Adrian.

In: Physical Review Letters, Vol. 118, No. 15, 154501, 12.04.2017.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Huygens-Fresnel Acoustic Interference and the Development of Robust Time-Averaged Patterns from Traveling Surface Acoustic Waves

AU - Devendran, Citsabehsan

AU - Collins, David J.

AU - Ai, Ye

AU - Neild, Adrian

PY - 2017/4/12

Y1 - 2017/4/12

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85017426884&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.154501

DO - 10.1103/PhysRevLett.118.154501

M3 - Article

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

M1 - 154501

ER -