Presentation Title

Construction of an Acoustic Levitation System

Faculty Mentor

Tim Usher

Start Date

17-11-2018 12:30 PM

End Date

17-11-2018 2:30 PM

Location

CREVELING 109

Session

POSTER 2

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

The main scope of this project was the construction of an acoustic levitation system. Originally, these systems consisted of an emitter and a reflector. A transducer would fill the role of the emitter and a flat surface would be the reflector. The ultrasonic sound wave emitted from the transducer reflects off the reflector and forms a standing wave with the original. This creates a wave which can levitate objects. In this new method of constructing the system, two arrays of piezoelectric transducers facing each other and produce ultrasonic sound waves of the same frequency. A total of 72 transducers were used. The transducers were operated at a frequency of 40kHz. The corresponding wavelength is 8.65 mm at 25 °C. The arrays were separated by a distance of 117 mm. The transducer arrays form a standing wave capable of levitating expanded polystyrene (EPS) particles with a mass of 1.3g. This research was supported by NSF grant number 1345163.

Key words: Acoustic, levitation, piezoelectric, transducer

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Nov 17th, 12:30 PM Nov 17th, 2:30 PM

Construction of an Acoustic Levitation System

CREVELING 109

The main scope of this project was the construction of an acoustic levitation system. Originally, these systems consisted of an emitter and a reflector. A transducer would fill the role of the emitter and a flat surface would be the reflector. The ultrasonic sound wave emitted from the transducer reflects off the reflector and forms a standing wave with the original. This creates a wave which can levitate objects. In this new method of constructing the system, two arrays of piezoelectric transducers facing each other and produce ultrasonic sound waves of the same frequency. A total of 72 transducers were used. The transducers were operated at a frequency of 40kHz. The corresponding wavelength is 8.65 mm at 25 °C. The arrays were separated by a distance of 117 mm. The transducer arrays form a standing wave capable of levitating expanded polystyrene (EPS) particles with a mass of 1.3g. This research was supported by NSF grant number 1345163.

Key words: Acoustic, levitation, piezoelectric, transducer