Mémoires vivantes à la BDIC : création d’un fonds de sources orales en milieu universitaire

International audienc

Model-based Control of the Magnetic Flux Profile in a Tokamak Plasma

International audienceA new model-based controller for the magnetic flux profile in a Tokamak plasma was developed using a simplified model of the magnetic flux dynamics. This simplified model is based on physically relevant dynamics that take into account the distributed nature of the system. Shape constraints on the controlled inputs are introduced, representing the limitations on the shape of the current profiles deposed by non-inductive current sources on the plasma. Some simulation results are presented and discussed

Investigation of photoluminescence voltage pl-v measurement: Correlation to capacitance voltage c-v for si/dielectric interface characterization

International audienceWe present an innovative approach of bias dependent photoluminescence characterization (PL-V) involving industrial Room Temperature Photoluminescence (RTPL) combined with corona charging. PL-V is performed on silicon oxide and silicon nitride films prepared on p-Type silicon substrates. Results are directly compared to Capacitance-Voltage (C-V) measurements. A linearized model for PL-V has also been developed to understand the physical properties associated with this technique and the key similarities with C-V characterization. We finally show the sensitivity of PL-V to surface state density whose determination can benefit passivation quality studies

Measurement considerations on doping profiles by scanning probe microscopy on semiconductor nanowires and nanostructures

session 6: Caractérisations et Propriétés (Oral 15)National audienc

Measurement considerations on doping profiles by scanning probe microscopy on semiconductor nanowires and nanostructures

session 6: Caractérisations et Propriétés (Oral 15)National audienc

Functional Vision Analysis in Patients With CHARGE Syndrome

International audiencePurpose: To evaluate functional vision in patients with CHARGE syndrome (coloboma, heart defects, atresia of the choanae, retardation of growth and development, genital and urinary anomalies, and ear anomalies) by using a new questionnaire entitled VISIOCHARGE.Methods: Ophthalmological data including fundus description and visual acuity, when available, were extracted from the charts of 83 patients with CHARGE syndrome, and the VISIOCHARGE questionnaire was prospectively mailed to 55 of those patients. The answers from the 36 responders (18 males) allowed for the calculation of three scores that assessed distance vision, near vision, and overall ability scores.Results: Visual acuity measurements were extracted from the charts of 20 of the 36 patients. The mean visual acuity was 20/50. The mean distance vision score of 0.62 ± 0.30 and near vision score of 0.78 ± 0.23 were correlated with visual acuity in the 20 patients (ρ = 0.64, P = .002 and ρ = 0.61, P = .005, respectively) and were associated with the severity of colobomatous malformation (P = .049 and P = .008, respectively). Severity of the ocular malformation was not associated with the overall ability score (P = .64).Conclusions: The VISIOCHARGE questionnaire is feasible for patients with CHARGE syndrome and may help in the assessment of visual function. The mean visual acuity and answers to the VISIOCHARGE questionnaire showed relatively good visual skills in patients with CHARGE syndrome in everyday life, even in those with bilateral colobomas, which contrasts with the pessimistic conclusions usually resulting from the initial fundus examination. [J Pediatr Ophthalmol Strabismus. 2020;57(2):120-128.]

Nanoscale imaging of dopant incorporation in n-type and p-type GaN nanowires by scanning spreading resistance microscopy

International audienc