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US 2019/0314859 A1Published application
System and method for harmonic modulation of standing wavefields for spatial focusing, manipulation, and patterning
AssigneeUtah Valley University
InventorsTimothy Edwin Doyle, Brian Dale Patchett, Natalie Charlotte Sullivan
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Abstract
An system, and method are disclosed for harmonic modulation of standing wavefields for spatial focusing, manipulation, and patterning of particles, cells, powders, aerosols, colloids, and solids using a multifrequency wave source, a chamber a control module and an analysis module to generate standard wavefields useful for tissue engineering, micro fabrication, therapeutic treatment, and diagnostic tests.
Claims23
An apparatus comprising:
- a chamber configured to confine a volume of a fluid comprising particulate matter;
- a plurality of multifrequency acoustic wave transducers disposed at separate portions of the chamber to face the fluid from different directions, wherein individual acoustic wave transducers of the plurality of multifrequency acoustic wave transducers:
- comprise a plurality of stacked piezoelectric elements electrically isolated from each other, the stacked piezoelectric elements comprising a first piezo electric element having different thicknesses than a second stacked piezoelectric element and being configured to tune each element to a selected harmonic frequency;
- and
- are driven in concert by a voltage source to generate standing waves having a selected wavefield pattern determined by modulating amplitudes of individual harmonics of the plurality of acoustic wave transducers, wherein the selected wavefield pattern is configured to confine particulate matter in suspension within the fluid to one or more stable regions.
2 more elements
A system comprising:
- a chamber comprising a well with a bottom and a sidewall having a geometry with a selected shape, the chamber configured to confine a volume of a fluid within the bottom and sidewall of the well;
- a plurality of acoustic wave transducers positioned to face the fluid from different directions;
- and
- an arbitrary waveform generator that drives the plurality of acoustic wave transducers to generate standing waves having a selected wavefield pattern determined by modulating amplitudes of individual harmonics of plurality of acoustic wave transducers, wherein the selected wavefield pattern is configured to confine particulate matter within the fluid to one or more stable regions determined by the selected wavefield pattern,
- wherein any flow of the fluid remains confined within the chamber during the generation of the standing waves.
2 more elements
A method comprising:
- confining a volume of a fluid comprising particulate matter in suspension within a chamber;
- positioning a plurality of acoustic wave transducers to face the fluid from different directions;
- and
- driving the plurality of acoustic wave transducers with one or more voltage sources to generate standing waves having a selected wavefield pattern determined by modulating amplitudes of individual harmonics of the plurality of acoustic wave transducers, wherein:
- the selected wavefield pattern is configured to confine particulate matter within the fluid to one or more stable regions determined by the selected wavefield pattern;
- and
- any flow of the fluid remains confined within the chamber during the generation of the standing waves.
4 more elements
Dependencies are inferred from the claim text.