Electrochemical `bubble swarm' enhancement of ultrasonic surface cleaning Birkin, P. R. ; Offin, D. G. ; Vian, C. J. B. ; Leighton, T. G. Abstract Publication: Physical Chemistry Chemical Physics (Incorporating Faraday Transactions) Pub Date: 2015 DOI: 10.1039/C5CP02933C Bibcode: 2015PCCP...1721709B