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1 March 2016 Multi-pulse pumping for far-field super-resolution imaging
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Recently, far-field optical imaging with a resolution significantly beyond diffraction limit has attracted tremendous attention allowing for high resolution imaging in living objects. Various methods have been proposed that are divided in to two basic approaches; deterministic super-resolution like STED or RESOLFT and stochastic super-resolution like PALM or STORM. We propose to achieve super-resolution in far-field fluorescence imaging by the use of controllable (on-demand) bursts of pulses that can change the fluorescence signal of long-lived component over one order of magnitude. We demonstrate that two beads, one labeled with a long-lived dye and another with a short-lived dye, separated by a distance lower than 100 nm can be easily resolved in a single experiment. The proposed method can be used to separate two biological structures in a cell by targeting them with two antibodies labeled with long-lived and short-lived fluorophores.
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Sebastian Requena, Sangram Raut, Hung Doan, Joe Kimball, Rafal Fudala, Julian Borejdo, Ignacy Gryczynski, Yuri Strzhemechny, and Zygmunt Gryczynski "Multi-pulse pumping for far-field super-resolution imaging", Proc. SPIE 9714, Single Molecule Spectroscopy and Superresolution Imaging IX, 97140F (1 March 2016);

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