Dexterous acoustic trapping and patterning of particles assisted by phononic crystal plate

In this letter, we present experimental demonstration of multi-particles trapping and patterning by the artificially engineered acoustic field of phononic crystal plate. Polystyrene particles are precisely trapped and patterned in two dimensional arrays, for example, the square, triangular, or quasi...

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Bibliographic Details
Published in:Applied physics letters 2015-04, Vol.106 (16)
Main Authors: Wang, Tian, Ke, Manzhu, Xu, Shengjun, Feng, Junheng, Qiu, Chunyin, Liu, Zhengyou
Format: Article
Language:English
Subjects:
Acoustics
Apertures
Applied physics
Arrays
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Crystal structure
CRYSTALS
HOLES
Lab-on-a-chip
PARTICLES
PERIODICITY
PHONONS
PLATES
Plates (structural members)
POLYSTYRENE
Polystyrene resins
Self-assembly
Sound waves
TRAPPING
TWO-DIMENSIONAL SYSTEMS
WAVELENGTHS
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Summary:In this letter, we present experimental demonstration of multi-particles trapping and patterning by the artificially engineered acoustic field of phononic crystal plate. Polystyrene particles are precisely trapped and patterned in two dimensional arrays, for example, the square, triangular, or quasi-periodic arrays, depending on the structures of the phononic crystal plates with varying sub-wavelength holes array. Analysis shows that the enhanced acoustic radiation force, induced by the resonant transmission field highly localized near the sub-wavelength apertures, accounts for the particles self-organizing. It can be envisaged that this kind of simple design of phononic crystal plates would pave an alternative route for self-assembly of particles and may be utilized in the lab-on-a-chip devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4918999