Ultrasonic imaging of biofilms utilizing echoes from the biofilm/air interface

Holmes, Andrew K. and Laybourn-Parry, Johanna and Parry, Jacqueline D. and Unwin, Marion E. and Challis, Richard E. (2006) Ultrasonic imaging of biofilms utilizing echoes from the biofilm/air interface. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 53 (1). pp. 185-192. ISSN 0885-3010

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Abstract

Ultrasonic imaging of biofilms in water is difficult due to the very low contrast in acoustic impedance between the biofilm and water. In this paper, biofilms exposed to moist air are scanned through the substrate in order to obtain echoes from the biofilm/air interface. A 50 MHz scanning system was used to scan 1 mm x 1 mm areas of biofilms in a 10 microm grid pattern. Two fast Fourier transform (FFT) based methods for enhancement of the film thickness measurement resolution are compared. Using these techniques, the surface topography of biofilms with thickness less than the acoustic wavelength can be imaged.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qh301
Subjects:
ID Code:
60194
Deposited By:
Deposited On:
22 Nov 2012 14:23
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Mar 2020 03:42