Title: Cavitation clusters in lipid systems – the generation of a bifurcated streamer and the dual collapse of a bubble cluster Silvana Martini - PI Department of Nutrition, Dietetics, and Food Sciences, Utah State University 8700 Old Main Hill, Logan, UT 84322, USA silvana.martini@usu.edu ORCiD ID: 0000-0002-5870-9931 Peter Birkin - Co-PI University of Southampton School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK prb2@soton.ac.uk ORCiD ID: 0000-0002-6656-4074 Tadd Truscott - Co-PI Department of Mechanical and Aerospace Engineering, Utah State University Logan, UT, 84322-4130, USA tadd.truscott@usu.edu ORCiD ID: 0000-0003-1613-6052 Funder: USDA-NIFA (Food Quality Progam) - Award number: 2017-67017-26476 Abstract: Over the past decade several studies have reported the use of high intensity ultrasound (HIU) to induce the crystallization of lipids. The effect that HIU has on lipid crystallization is usually attributed to the generation of cavities but acoustic cavitation has never been fully explored in lipids. The dynamics of a particular cavitation cluster next to a piston like emitter in an oil, was investigated in this study. The lipid systems, which are important in food processing, are studied with high-speed camera imaging, laser scattering and pressure measurements. A sequence of stable clusters were noted. In addition, a bifurcated streamer was detected which exists within a sequence of clusters. This is shown to originate from two clusters on the PLE tip oscillating with an 1800 phase relationship with respect to one another. Finally, the collapse phase of the cluster is shown to involve a rapid (<10 µs) two stage process. These results show that the dynamics of cluster formation and collapse is driven by HIU power levels and might have implications in lipid sonocrystallization. Data Description: Data collected using an oscilloscope or a high-speed camera. Processed using VB2010 software utilizing NI Measurement studio or, where appropriate, manufacturer supplied software (Photron for example) Files Description: There are 5 folders. Each contain the experimental data used for a specific figure reported in the manuscript. Figure 1, 2, 5 have commas delimited data. Figure 3, 4 stills images. Definition of acronyms, codes, and abbreviations: N/A Description or definition any other unique information that would help others use your data: The data was collected as described in the manuscript. Data is comma delimited as appropriate. Descriptions of parameters/variables: a. Temporal (beginning and end dates of data collection): Included in the data files where appropriate b. Instruments used and units of measurements: Voltage for hydrophone and photodiode scattering data c. Column headings of data files (for tabular data): Included in each file set or as a separate txt file. d. Location/GIS Coverage (if applicable to data): N/A e. Symbol used for missing data:N/A Special software required to use data: N/A Publications that cite or use this data: N/A This data was not derived from another data source.