“Lambda” DNA molecules, flowing in a grooved microchannel, have to encounter various obstacles: laser beams that excite their energy and eventually tear them apart, air bubbles that disturb their pathlines and velocities, and electric fields that pull them and distort their shapes. Raw images captured at TU Delft in 2008, using Nikon Ti microscope, under fluorescence configuration. NOTE: Ignore the scales, they were wrong (thanks to the automated scaling used in the Image Capturing software). As an indication to the correct scale, the microchannel width (ie the distance between the walls seen at the left and the right side of the image) is 100 micrometers. –Gea OF Parikesit gea.ari.googlepages.com
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