Paper selected to feature in virtual journal Virtual Journal of Biological Physics Research -- September 15, 2005, Volume 10, Issue 6 Light-induced cell separation in a tailored optical landscape L. Paterson, E. Papagiakoumou, G. Milne, V. Garcés-Chávez, S. A. Tatarkova, W. Sibbett, F. J. Gunn-Moore, P. E. Bryant, A. C. Riches, and K. Dholakia Applied Physics Letters 87,123901 (2005)