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Wiley, Journal of Microscopy, 1(291), p. 16-29, 2022

DOI: 10.1111/jmi.13157

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Multi‐foci parallelised RESOLFT nanoscopy in an extended field‐of‐view

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractLive‐cell imaging of biological structures at high resolution poses challenges in the microscope throughput regarding area and speed. For this reason, different parallelisation strategies have been implemented in coordinate‐ and stochastic‐targeted switching super‐resolution microscopy techniques. In this line, the molecular nanoscale live imaging with sectioning ability (MoNaLISA), based on reversible saturable optical fluorescence transitions (RESOLFT), offers resolution of large fields of view in a few seconds. In MoNaLISA, engineered light patterns strategically confine the fluorescence to sub‐diffracted volumes in a large area and provide optical sectioning, thus enabling volumetric imaging at high speeds. The optical setup presented in this paper extends the degree of parallelisation of the MoNaLISA microscope by more than four times, reaching a field‐of‐view of . We set up the periodicity and the optical scheme of the illumination patterns to be power‐efficient and homogeneous. In a single recording, this new configuration enables super‐resolution imaging of an extended population of the post‐synaptic density protein Homer1c in living hippocampal neurons.