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Title: Inhibition of barnacle cyprid settlement using low frequency and intensity ultrasound
Authors: Guo, S.
Lee, H.P. 
Teo, S.L.M. 
Khoo, B.C. 
Keywords: barnacle exploration behaviour
barnacle settlement
intermittent operation
low intensity ultrasound
substratum vibration
Issue Date: Feb-2012
Source: Guo, S., Lee, H.P., Teo, S.L.M., Khoo, B.C. (2012-02). Inhibition of barnacle cyprid settlement using low frequency and intensity ultrasound. Biofouling 28 (2) : 131-141. ScholarBank@NUS Repository.
Abstract: Low frequency, low intensity ultrasound was demonstrated as an effective inhibitor of barnacle cyprid settlement. When the same substratum vibration amplitude (10.05 nm) and acoustic pressure (5 kPa) were applied, ultrasound at a frequency of 23 kHz significantly reduced cyprid settlement. The mechanism appeared to differ from the ultrasonic cavitation induced inhibition previously reported as no increased mortality was observed, and no change in the exploratory behaviour of cyprids was observed when they were exposed to this continuous ultrasonic irradiation regime. The application of ultrasound treatment in an intermittent mode of '5 min on and 20 min off' at 20-25 kHz and at the low intensity of 5 kPa produced the same effect as the continuous application of 23 kHz. This energy efficient approach to the use of low frequency, low intensity ultrasound may present a promising and efficient strategy regarding irradiation treatment for antifouling applications. © 2012 Copyright Taylor and Francis Group, LLC.
Source Title: Biofouling
ISSN: 08927014
DOI: 10.1080/08927014.2012.658511
Appears in Collections:Staff Publications

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