University of Sussex
Browse
1.5078948.pdf (2.72 MB)

Experimental investigation of the particle oscillation instability in a single-axis acoustic levitator

Download (2.72 MB)
journal contribution
posted on 2023-06-09, 17:33 authored by Marco A B Andrade, Spyros Polychronopoulos, Gianluca MemoliGianluca Memoli, Asier Marzo
Single-axis acoustic levitators are employed in biomedicine, chemistry and physics experiments due to their ability to trap in mid-air objects of a wide range of materials and sizes. Although this type of levitator has been studied for decades, there are effects that are not well understood. One of these effects is the particle oscillation instability, in which the levitating particle starts to oscillate with increasing amplitude until it is ejected out of the levitator. Most of the operations performed with acoustic levitation require high accuracy regarding the positioning of the particle, thus a lack of stability severely hinders the experiments. In this paper, we present an experimental setup that consists of a single-axis levitator, a mechanized stage to control the separation between the emitter and the reflector, a scale to measure the radiation force and a high-speed camera. We experimentally investigate the effect of the distance between the emitter and the reflector on the apparatus resonant frequency and on levitation stability. In accordance with previous theoretical studies, three types of levitation behavior were experimentally identified: stable levitation, oscillation of constant amplitude and unstable oscillation. We also show that the type of levitation behavior can be controlled by changing the distance between the emitter and the reflector.

Funding

European Union’s Horizon 2020; 737087

FAPESP; 2017/27078-0

AURORA: Controlling sound like we do with light; G2448; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/S001832/1

History

Publication status

  • Published

File Version

  • Published version

Journal

AIP Advances

ISSN

2158-3226

Publisher

AIP Publishing

Issue

3

Volume

9

Page range

035020 1-6

Department affiliated with

  • Informatics Publications

Research groups affiliated with

  • Creative Technology Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-04-10

First Open Access (FOA) Date

2019-04-10

First Compliant Deposit (FCD) Date

2019-04-09

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC