Resolving Rotational Motions of Nano-objects in Engineered Environments and Live Cells with Gold Nanorods and Differential Interference Contrast Microscopy
Journal of the American Chemical Society2010Vol. 132(46), pp. 16417–16422
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Abstract
Gold nanorods are excellent orientation probes due to their anisotropic optical properties. Their dynamic rotational motion in the 3D space can be disclosed with Nomarski-type differential interference contrast (DIC) microscopy. We demonstrate that by using the combination of gold nanorod probes and DIC microscopy, we are able to resolve rotational motions of nano-cargos transported by motor proteins at video rate not only on engineered surfaces but also on cytoskeleton tracks in live cells.
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