Rotational mobility of single molecules affects localization accuracy in super-resolution fluorescence microscopy.

Lew, Matthew D; Backlund, Mikael P; Moerner, W E · Nano Lett · 2013

basic_science · Level V

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Abstract

The asymmetric nature of single-molecule (SM) dipole emission patterns limits the accuracy of position determination in localization-based super-resolution fluorescence microscopy. The degree of mislocalization depends highly on the rotational mobility of SMs; only for SMs rotating within a cone half angle α > 60° can mislocalization errors be bounded to ≤10 nm. Simulations demonstrate how low or high rotational mobility can cause resolution degradation or distortion in super-resolution reconstructions.

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