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Annonce

8 octobre 2019

Offre de Stage Master2/PFE en microscopie par tomographie diffractive


Catégorie : Stagiaire


IRIMAS (https://www.irimas.uha.fr/) Institute developed a Tomographic Diffraction Microscope (TDM) allow for full 3D-imaging of microscopic transparent samples, with an unequalled resolution (Opt. Lett. 34, p. 79 (2009), Optica 4, p. 460 (2017)).

Data acquisition consists of two steps:

1)The recording step, which consists in the acquisition of holograms of the sample under various illumination angles. This step being performed using an optical set-up designed at IRIMAS.

2)The reconstruction step consists in the extraction of wavefronts from the recorded holograms. These wavefronts are then combined to reconstruct the final 3D image.

These steps make it possible for 3D refraction and absorption characterization of the investigated sample. Nevertheless, it is possible to add new functionalities to the existing technique.

Democratization of polarization sensitive imaging devices (see for instance https://thinklucid.com/product/phoenix-5-mp-imx264/) paths the way to new investigation fields, and might allow for extraction of more information about the studied sample (birefringence, structural and mechanical properties …)

Within this framework, the trainee will have to:

1)Become familiar with TDM data acquisition and reconstruction.

2)Implement polarized image reconstruction scheme (demosaicing, data registration and fusion).

3)Performing first acquisition on samples with known polarization properties.

Expected skills: autonomy, resourcefulness, creativity. Strong analytical skills, as well as computational skills are mandatory.

Duration: 4 to 6 months

References:

Nicolas Verrier (Ass.-Prof)

nicolas.verrier@uha.fr

IRIMAS

IUT de Mulhouse, 61 rue Albert Camus

68093 Mulhouse Cedex

Tél: 03 89 33 76 66

Olivier Haeberlé (Full-Prof.)

olivier.haeberle@uha.fr

IRIMAS

IUT de Mulhouse, 61 rue Albert Camus

68093 Mulhouse Cedex

Tél: 03 89 33 76 11

 

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