These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


PUBMED FOR HANDHELDS

Search MEDLINE/PubMed


  • Title: Ultrasonic deposition of cells on a surface.
    Author: Hawkes JJ, Long MJ, Coakley WT, McDonnell MB.
    Journal: Biosens Bioelectron; 2004 Apr 15; 19(9):1021-8. PubMed ID: 15018957.
    Abstract:
    Bacteria in water have been driven to a glass surface by an ultrasonic standing wave. On an antibody coated surface capture of Bacillus subtilis var niger (BG) spores (6.6 x 10(6) ml(-1)) was increased more than 200-fold over above the efficiency in the absence of ultrasound. In microfluidic (non-turbulent) systems detection of particles by sensors operating at a surface is diffusion limited. This results in very low detection abilities particularly for particles with diameters greater than 1 microm. Ultrasound is used here to drive bacterial spores to a wall and overcome this limitation. The results confirm: (1) pressure nodes can be formed close to the water-glass interface when the glass thickness is near half the ultrasonic wavelength; (2) the antibody used was able to capture spores in the presence of an ultrasonic standing wave.
    [Abstract] [Full Text] [Related] [New Search]