Event Title

Acoustic Holography: Experiments with Acoustic Diffraction

Faculty Advisor

Gabriel Spalding

Graduation Year

2019

Location

Room E101, Center for Natural Sciences, Illinois Wesleyan University

Start Date

21-4-2018 10:00 AM

End Date

21-4-2018 11:00 AM

Description

A hologram is a method of using the diffraction patterns created by phase-shifted interacting waves to store data in higher dimensions than the source. This research looks at patterns formed by diffraction patterns of longitudinal sound waves at ultrasonic frequencies. Using various arrays designed through CAD connected to ultrasonic transducers, different holographic patterns were created and tested in terms of shape and pressure. These holograms were designed using an iterative algorithm to rely solely on phase informations in order to preserve amplitude. Using these patterns levitation of small objects became a possibility, and interactions between holographic trapping patterns and various fluid systems were explored in attempts at finding soliton formation. Currently there are theories as to finding solitons that will continue to be tested over coming months.

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Apr 21st, 10:00 AM Apr 21st, 11:00 AM

Acoustic Holography: Experiments with Acoustic Diffraction

Room E101, Center for Natural Sciences, Illinois Wesleyan University

A hologram is a method of using the diffraction patterns created by phase-shifted interacting waves to store data in higher dimensions than the source. This research looks at patterns formed by diffraction patterns of longitudinal sound waves at ultrasonic frequencies. Using various arrays designed through CAD connected to ultrasonic transducers, different holographic patterns were created and tested in terms of shape and pressure. These holograms were designed using an iterative algorithm to rely solely on phase informations in order to preserve amplitude. Using these patterns levitation of small objects became a possibility, and interactions between holographic trapping patterns and various fluid systems were explored in attempts at finding soliton formation. Currently there are theories as to finding solitons that will continue to be tested over coming months.