Holographic acoustic elements for manipulation of levitated objects

Marzo, Asier, Seah, Sue Ann, Drinkwater, Bruce W, Sahoo, Deepak Ranjan, Long, Benjamin and Subramanian, Sriram (2015) Holographic acoustic elements for manipulation of levitated objects. Nature Communications, 6 (8661). pp. 1-7. ISSN 2041-1723

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Abstract

Sound can levitate objects of different sizes and materials through air, water and tissue. This allows us to manipulate cells, liquids, compounds or living things without touching or contaminating them. However, acoustic levitation has required the targets to be enclosed with acoustic elements or had limited manoeuvrability. Here we optimize the phases used to drive an ultrasonic phased array and show that acoustic levitation can be employed to translate, rotate and manipulate particles using even a single-sided emitter. Furthermore, we introduce the holographic acoustic elements framework that permits the rapid generation of traps and provides a bridge between optical and acoustical trapping. Acoustic structures shaped as tweezers, twisters or bottles emerge as the optimum mechanisms for tractor beams or containerless transportation. Single-beam levitation could manipulate particles inside our body for applications in targeted drug delivery or acoustically controlled micro-machines that do not interfere with magnetic resonance imaging.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Subjects: Q Science > Q Science (General)
Q Science > QC Physics > QC0221 Acoustics. Sound
T Technology > T Technology (General)
Depositing User: Deepak Sahoo
Date Deposited: 30 Oct 2015 08:31
Last Modified: 15 Mar 2017 04:18
URI: http://sro.sussex.ac.uk/id/eprint/57418

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Project NameSussex Project NumberFunderFunder Ref
Interact-Interactive Systems Involving Multi-Point Surfaces, Haptics and true-3D displaysG1686EUROPEAN UNION278576
UnsetUnsetEC FP7 FET Open Scheme309191