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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Nat Nanotechnol. 2014 Jul 20;9(8):624–630. doi: 10.1038/nnano.2014.140

Figure 1.

Figure 1

Optical trapping of HIV virions in culture fluid. (a) HIV-1 virions were delivered into a microfluidic chamber and trapped by the IR laser focused at the center of the chamber. The xyz dimensions are shown as indicated, with y perpendicular to the figure plane. (b) TPF image of a trapped HIV virion. The scale bar is 10 µm. (c) Representative TPF time courses from individually-trapped HIV virions. All traces were fit with single exponential decay (red), with time constants for each trace as follows: 60.7 (square), 49.5 (cross), 51.5 (circle) and 54.1 s (triangle). Time zero started with the onset of TPF collection.