Fresnel Institut (MOSAIC Group)
Contact: Sophie Brasselet
The Mosaic group of the Fresnel Institute headed by H. Rigneault has been involved for almost a decade in developing dedicated optical instruments for biological imaging. Among other, the team has developed together with CIML the “FCS diffusion law” approach in Fluorescence Correlation Spectroscopy that has been successfully applied to the cell membrane. More recently single particle tracking using multiple targets have proved to be powerful to distinguish confinement zone at the cell membrane and Holographic Optical Tweezers shows potential application into TCR/MHC control. Phase control for micro-manipulation and imaging is an active field of research at Mosaic. Since 2002, the Mosaic group has been involved in coherent Raman microscopy and nonlinear imaging and was the first in France to build and develop a CARS microscope. One of the group world recognized expertise is in polarization resolved fluorescence and nonlinear microscopy that has proved to be able to retrieve molecular order in cell and tissue imaging. The group is now also involved in the development of nonlinear imaging using endoscopes using innovative microstructured optical fibers. Another active field of research is fluorescence enhancement at the nanoscale using metallic nano-antenna that have the ability to perform dynamic analysis on time and spatial scales unreachable with far field optics.