skip to main content

Title: Independent trapping and manipulation of microparticles using dexterous acoustic tweezers

An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap particles in larger regions than is possible with first-order traps. The acoustic tweezers consist of a circular 64-element ultrasonic array operating at 2.35 MHz which generates ultrasonic pressure fields in a millimeter-scale fluid-filled chamber. The manipulation capabilities were demonstrated experimentally with 45 and 90-μm-diameter polystyrene spheres. These capabilities bring the dexterity of acoustic tweezers substantially closer to that of optical tweezers.
Authors:
 [1] ; ; ;  [2] ; ; ;  [3]
  1. Department of Mechanical Engineering, University of Bath, Bath (United Kingdom)
  2. Institute of Medical Science and Technology, University of Dundee, Dundee (United Kingdom)
  3. Department of Mechanical Engineering, University of Bristol, Bristol (United Kingdom)
Publication Date:
OSTI Identifier:
22262529
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BESSEL FUNCTIONS; FLUIDS; PARTICLES; POLYSTYRENE; SOUND WAVES; SPHERES; TRAPPING