UCsim2: two-dimensionally structured illumination microscopy using UC2

in: Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences (2022)
Wang, Haoran; Lachmann, René; Marsikova, Barbora; Heintzmann, Rainer; Diederich, Benedict
State-of-the-art microscopy techniques enable the imaging of sub-diffraction barrier biological structures at the price of high costs or a lack of transparency. We try to reduce some of these barriers by presenting a super-resolution upgrade to our recently presented open-source optical toolbox UC2. Our new injection moulded parts allow larger builds with higher precision. The 4×lower manufacturing tolerance compared to three-dimensional printing makes assemblies more reproducible. By adding consumergrade available open-source hardware such as digital mirror devices and laser projectors, we demonstrate a compact three-dimensional multimodal setup that combines image scanning microscopy and structured illumination microscopy. We demonstrate a gain in resolution and optical sectioning using the two different modes compared to the widefield limit by imaging Alexa Fluor ® 647- and Silicon Rhodaminestained HeLa cells. We compare different objective lenses and by sharing the designs and manuals of our setup, we make super-resolution imaging available to everyone. This article is part of the Theo Murphy meeting issue ’Super-resolution structured illumination microscopy (part 2)’.

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