--- _id: '90' abstract: - lang: eng text: A popular method for generating micron-sized aerosols is to submerge ultrasonic (ω ∼ MHz) piezoelectric oscillators in a water bath. The submerged oscillator atomizes the fluid, creating droplets with radii proportional to the wavelength of the standing wave at the fluid surface. Classical theory for the Faraday instability predicts a parametric instability driving a capillary wave at the subharmonic (ω / 2) frequency. For many applications it is desirable to reduce the size of the droplets; however, using higher frequency oscillators becomes impractical beyond a few MHz. Observations are presented that demonstrate that smaller droplets may also be created by increasing the driving amplitude of the oscillator, and that this effect becomes more pronounced for large driving frequencies. It is shown that these observations are consistent with a transition from droplets associated with subharmonic (ω/2) capillary waves to harmonic (ω) capillary waves induced by larger driving frequencies and amplitudes, as predicted by a stability analysis of the capillary waves. author: - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 - first_name: A full_name: Guillen, A last_name: Guillen - first_name: Nick full_name: Jones, Nick last_name: Jones - first_name: Tom full_name: Donnelly, Tom last_name: Donnelly - first_name: Andrew full_name: Bernoff, Andrew last_name: Bernoff citation: ama: Higginbotham AP, Guillen A, Jones N, Donnelly T, Bernoff A. Evidence of the harmonic Faraday instability in ultrasonic atomization experiments with a deep, inviscid fluid. Journal of the Acoustical Society of America. 2011;130(5):2694-2699. doi:10.1121/1.3643816 apa: Higginbotham, A. P., Guillen, A., Jones, N., Donnelly, T., & Bernoff, A. (2011). Evidence of the harmonic Faraday instability in ultrasonic atomization experiments with a deep, inviscid fluid. Journal of the Acoustical Society of America. Acoustical Society of America. https://doi.org/10.1121/1.3643816 chicago: Higginbotham, Andrew P, A Guillen, Nick Jones, Tom Donnelly, and Andrew Bernoff. “Evidence of the Harmonic Faraday Instability in Ultrasonic Atomization Experiments with a Deep, Inviscid Fluid.” Journal of the Acoustical Society of America. Acoustical Society of America, 2011. https://doi.org/10.1121/1.3643816. ieee: A. P. Higginbotham, A. Guillen, N. Jones, T. Donnelly, and A. Bernoff, “Evidence of the harmonic Faraday instability in ultrasonic atomization experiments with a deep, inviscid fluid,” Journal of the Acoustical Society of America, vol. 130, no. 5. Acoustical Society of America, pp. 2694–2699, 2011. ista: Higginbotham AP, Guillen A, Jones N, Donnelly T, Bernoff A. 2011. Evidence of the harmonic Faraday instability in ultrasonic atomization experiments with a deep, inviscid fluid. Journal of the Acoustical Society of America. 130(5), 2694–2699. mla: Higginbotham, Andrew P., et al. “Evidence of the Harmonic Faraday Instability in Ultrasonic Atomization Experiments with a Deep, Inviscid Fluid.” Journal of the Acoustical Society of America, vol. 130, no. 5, Acoustical Society of America, 2011, pp. 2694–99, doi:10.1121/1.3643816. short: A.P. Higginbotham, A. Guillen, N. Jones, T. Donnelly, A. Bernoff, Journal of the Acoustical Society of America 130 (2011) 2694–2699. date_created: 2018-12-11T11:44:34Z date_published: 2011-11-16T00:00:00Z date_updated: 2021-01-12T08:21:44Z day: '16' doi: 10.1121/1.3643816 extern: '1' external_id: pmid: - ' 22087897' intvolume: ' 130' issue: '5' language: - iso: eng month: '11' oa_version: None page: 2694 - 2699 pmid: 1 publication: Journal of the Acoustical Society of America publication_status: published publisher: Acoustical Society of America publist_id: '7964' quality_controlled: '1' status: public title: Evidence of the harmonic Faraday instability in ultrasonic atomization experiments with a deep, inviscid fluid type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 130 year: '2011' ...