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Référence : UMR6164-NATBLA-005
Lieu de travail : RENNES
Date de publication : mercredi 7 mars 2018
Nom du responsable scientifique : Maxim ZHADOBOV
Type de contrat : CDD Doctorant/Offre de thèse
Durée du contrat : 36 mois
Date de début de la thèse : 1 octobre 2018
Quotité de travail : Temps complet
Rémunération : 1 768,55 € brut mensuel
Description du sujet de thèse
Millimeter-wave (MMW) technologies are increasingly used for various applications. In particular, they have been used for high data rate communications [> 5 Gb/s], and 60-GHz technologies are expected to be integrated in the near future in the next generation mobile systems. Besides, it was suggested that MMW can be used for a number of biomedical applications, including remote monitoring of wounds and non-invasive detection of glucose level. Recently, our research team has demonstrated the possibility of selective focusing of heating in cutaneous and sub-cutaneous layers by means of MMW for thermal treatments. This opens a door to new potential applications of MMW in the field of biomedical electromagnetics, including selective targeting of skin cancers.
The main purpose of this PhD research project is to analyze EM field and temperature distributions at cellular level in order to gain an insight into local micro- and submm-scale phenomena occurring during exposure of the human body to MMW.
Contexte de travail
The PhD student will work at the Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, Rennes, France.
The guidelines of the PhD project are threefold :
1. Micro-scale numerical EM and transient thermal analysis will be performed on cellular models of progressively increasing complexity. To this end, we will consider simplified geometric models of a single cell with sub-cellular organelles and will increase the complexity to realistic single- and multi-cell models. Various cell morphologies will be considered from nearly spherical to flat. This will result in definition of several representative geometrical cell models.
2. EM (complex permittivity and conductivity) and thermal (heat capacity and conduction) properties will be assigned to these models. This will involve characterization of effective EM and thermal properties of cells and cellular sub-structures (membrane components, cytoplasm, cellular organelles, etc.).
3. The EM field distribution will be computed in the 1–100 GHz range using designed cellular models. Multi-parametric analysis will be performed to assess the variability of the EM field and power distributions as a function of the geometry, complex permittivity, conductivity and micro-cellular environment. The data on micro-scale EM field and power deposition will be used as an input to thermal co-simulations.
The study will be carried out in a close collaboration with experts from the Institute for Research on Environmental and Occupational Health (IRSET), Rennes, France.
Candidate's education : MS or equivalent.
Background : electromagnetics, numerical modeling, microwave / MMW / thermal measurements. Knowledge in biology / biophysics is welcome but not mandatory.
PhD fellowship from French “ Ministère de l'Enseignement Supérieur et de la Recherche (MESR) ”.
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