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People
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Rongjing ZhangPostdoctoral Fellow, working on swarming bacteria. Her studies follow the motion of fluid, cell bodies and flagella that characterize cooperative movement of cells over moist surfaces. Rongjing used MgO smoke particles imaged with dark field, by adding a fiber-optic illuminator oriented about 10 degrees from horizontal, to see the upper most surface of the swarm. She found that the particles diffuse locally but are not perturbed by the swarming cells, which shows that the surface of the swarm is stationary. We think it is covered by a surfactant monolayer pinned at its edges. Selected PublicationsTurner, L., Zhang, R., Darnton, N.C., and Berg, H.C. Visualization of flagella during bacterial swarming. J. Bacteriol. (2010), in press. Zhang, R., Turner, L. and Berg, H.C. The upper surface of an Escherichia coli swarm is stationary. Proc. Natl. Acad. Sci. USA 107: 288-290 (2010). Zhang, R., Ravichandran, G., Shilo, D., Bhattacharya, K., Method and apparatus for measuring the mechanical response of micro-electro-mechanical systems. US patent 7444880, (2008). Zhang, R., Shilo, D., Ravichandran, G. and Bhattacharya, K. Mechanical Characterization of Released Thin Films by Contact Loading. Journal of Applied Mechanics. 73(5), 730-736 (2006).
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| Copyright © 2003 The Rowland Institute for Science. |
Last modified, April 21, 2010.
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