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Updated: Jun 20, 2026

Near Simultaneous Laser Scanning Confocal and Atomic Force Microscopy (Conpokal) on Live Cells
Published on: August 11, 2020
A versatile dual spot laser scanning confocal microscopy system for advanced fluorescence correlation spectroscopy
Patrick Ferrand1, Martina Pianta, Alla Kress
1Institut Fresnel, Aix-Marseille Université, Campus de St Jérôme, F-13013 Marseille, France. patrick.ferrand@fresnel.fr
Abstract:
A fluorescence correlation spectroscopy system based on two independent measurement volumes is presented. The optical setup and data acquisition hardware are detailed, as well as a complete protocol to control the location, size, and shape of the measurement volumes. A method that allows to monitor independently the excitation and collection efficiency distribution is proposed. Finally, a few examples of measurements that exploit the two spots in static and/or scanning schemes are reported.
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