A. Sentenac

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(Received XXXX; final version received XXXXX) Tomographic Diffractive Microscopy (TDM) is an advanced digital imaging technique, which combines the recording of multiple holograms with the use of inversion procedures to retrieve quantitative information on the sample. In this review, we discuss the basic theory of TDM in the framework of electromagnetism(More)
Yeast RNA polymerase B catalyzes an efficient abortive initiation on double-stranded DNA templates using the appropriate combination of primer and substrate. The specificity of initiation was investigated using a recombinant plasmid (pJD14 DNA) containing the structural gene for yeast alcohol dehydrogenase I (ADHI). The combination of the dinucleotide UpA(More)
The microscope image of a thick fluorescent sample taken at a given focal plane is plagued by out-of-focus fluorescence and diffraction limited resolution. In this work, we show that a single slice of Structured Illumination Microscopy (two or three beam SIM) data can be processed to provide an image exhibiting tight sectioning and high transverse(More)
We propose an effective-medium theory for random aggregates of small spherical particles that accounts for the finite size of the embedding volume. The technique is based on the identification of the first two orders of the Born series within a finite volume for the coherent field and the effective field. Although the convergence of the Born series requires(More)
Using a Cramer-Rao analysis, we study the theoretical performances of a time and spatially resolved fDOT imaging system for jointly estimating the position and the concentration of a point-wide fluorescent volume in a diffusive sample. We show that the fluorescence lifetime is a critical parameter for the precision of the technique. A time resolved fDOT(More)
In this communication, a fast reconstruction algorithm is proposed for fluorescence blind structured illumination microscopy (SIM) under the sample positivity constraint. This new algorithm is by far simpler and faster than existing solutions, paving the way to 3D and real-time 2D reconstruction.
The blind structured illumination microscopy (SIM) strategy proposed in [1] is fully re-founded in this paper, unveiling the central role of the sparsity of the illumination patterns in the mechanism that drives super-resolution in the method. A numerical analysis shows that the resolving power of the method can be further enhanced with optimized one-photon(More)
We provide a numerical study of a tomographic microscope in which the sample is deposited on a periodically nanostructured substrate and is illuminated under various incident angles. The map of permittivity of the sample is retrieved numerically from the complex data of the diffracted far-field. A single-scattering analysis shows that, with an optimized(More)
s'intéresser au diverses idées parfois maladroites que nous pouvions leur présenter, Slimane et David pour des conversations qui sortait parfois très loin de la physique, mais aussi le reste de l'´ equipe qui a toujoursété l` a pour me conseiller. Je dois aussi remercier tous les membres dutroisì emé etage, pour leur disponibilité pour toutes questions(More)
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