Multifrequency Acoustic Levitation

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dc.contributor Helsingin yliopisto, Matemaattis-luonnontieteellinen tiedekunta fi
dc.contributor University of Helsinki, Faculty of Science en
dc.contributor Helsingfors universitet, Matematisk-naturvetenskapliga fakulteten sv Puranen, Tuomas 2020
dc.identifier.uri URN:NBN:fi:hulib-202006112756
dc.description.abstract Acoustic levitation permits non-contacting particle manipulation. The position and orientation of the levitated particle can be controlled by altering the acoustic field. Existing acoustic levitators have employed a single frequency which limits the types of acoustic traps that can be created. The use of multiple frequencies makes it possible to control the forces acting on a particle independently in all directions. I predict theoretically the forces acting on particles placed in the acoustic fields created with multiple coexisting frequencies. I present two traps which demonstrate the benefits of multifrequency acoustic levitation. To realize the traps, I constructed a 450-channel phased array acoustic levitator with individual frequency, phase, and amplitude control for each channel. en
dc.language.iso eng
dc.publisher Helsingin yliopisto fi
dc.publisher University of Helsinki en
dc.publisher Helsingfors universitet sv
dc.subject Acoustic Levitation
dc.subject Acoustic Radiation Force
dc.subject Ultrasonics
dc.subject Phased Arrays
dc.title Multifrequency Acoustic Levitation en
dc.type.ontasot pro gradu -tutkielmat fi
dc.type.ontasot master's thesis en
dc.type.ontasot pro gradu-avhandlingar sv
dc.subject.discipline none und
dct.identifier.urn URN:NBN:fi:hulib-202006112756
dc.subject.specialization Elektroniikka ja teollisuusfysiikka fi
dc.subject.specialization Electronics and Industrial Physics en
dc.subject.specialization Elektronik och industrifysik sv
dc.subject.degreeprogram Materiaalitutkimuksen maisteriohjelma fi
dc.subject.degreeprogram Master's Programme in Materials Research en
dc.subject.degreeprogram Magisterprogrammet i materialforskning sv

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