title: Comparison of sonochemiluminescence images using image analysis techniques and identification of acoustic pressure fields via simulation.
abstract: One common method to determine the existence of cavitational activity in power ultrasonics systems is by capturing images of sonoluminescence (SL) or sonochemiluminescence (SCL) in a dark environment. Conventionally, the light emitted from SL or SCL was detected based on the number of photons. Though this method is effective, it could not identify the sonochemical zones of an ultrasonic systems. SL/SCL images, on the other hand, enable identification of 'active' sonochemical zones. However, these images often provide just qualitative data as the harvesting of light intensity data from the images is tedious and require high resolution images. In this work, we propose a new image analysis technique using pseudo-colouring images to quantify the SCL zones based on the intensities of the SCL images and followed by comparison of the active SCL zones with COMSOL simulated acoustic pressure zones.
authors.affiliation: Department of Chemical and Environmental Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia. Electronic address: joyce.tiong@nottingham.edu.my.
authors.forename: T Joyce
authors.initials: TJ
authors.lastname: Tiong
authors.affiliation: Graduate School, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia.
authors.forename: Tissa
authors.initials: T
authors.lastname: Chandesa
authors.affiliation: Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43000 Kajang, Selangor, Malaysia.
authors.forename: Yeow Hong
authors.initials: YH
authors.lastname: Yap
keywords: Acoustic pressure; COMSOL; Image analysis; Sonochemiluminescence