Cell detachment method using shock-wave–induced cavitation

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Junge, L. and Ohl, C.D. and Wolfrum, B. and Arora, M. and Ikink, R. (2003) Cell detachment method using shock-wave–induced cavitation. Ultrasound in Medicine and Biology, 29 (12). pp. 1769-1776. ISSN 0301-5629

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Abstract:The detachment of adherent HeLa cells from a substrate after the interaction with a shock wave is analyzed. Cavitation bubbles are formed in the trailing, negative pressure cycle following the shock front. We find that the regions of cell detachment are strongly correlated with spatial presence of cavitation bubbles. It is shown that the cavitation bubble collapse generates a transient high-speed flow along the substrate surface leading to rapid detachment of the cells. Flow trajectories are reconstructed from the video recordings using robust image-processing methods. From these trajectories, an estimate of the shear stress acting on the cells is obtained and the area of detachment is estimated with a kinetic model. Furthermore, it is suggested that the application of shock waves extends the known methods of cell detachment with the ability to control the process in space and time.
Item Type:Article
Copyright:© 2003 World Federation for Ultrasound in Medicine & Biology
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/74958
Official URL:http://dx.doi.org/10.1016/j.ultrasmedbio.2003.08.010
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Metis ID: 216924