David Poussin

Manager of the computing team, composed of 7 people from different background. I took over the team at a period where there was no clear leadership, and re-shaped it into an efficient and organised group. The team's goals are very broad and diverse. To only cite a few: - Improving simulation speed and accuracy. - Development of new tools, to strengthen both R&D and production. - Maintaining a robust development environment, to allow different tools to work together. - Writing of documentation and tutorials, for both users, and future developers. During my time as head of the team, we made a lot of technical progress, as well as structural ones, greatly improving our way of working. Technical : - Implementation of a totally new workflow for users, allowing much faster development, and smoother use of our software. - Better homogenisation of the different tools working together, preventing mistakes at both the user, and the developer level. - Continuous push for the use of cloud computing, to drastically increase our simulation capabilities. This is done by leveraging the different solutions already existing in the company. Structural : - Implementation of Scrum (Agile framework) within the team, in an adapted way to our work. - Development of clear release procedures, improving features delivery to user, and alignment between team members. - Re structuration of our documentations, using existing platform within the company.

Senior engineer in charge of waveguide design development and nanostructures optimisation, for augmented reality glasses. Responsible of projects for next generation AR glasses, managing people with different backgrounds, and collaborating with various teams across the company. Creation of new architecture for the waveguide nanostructures, for performance and homogeneity improvement. Following this, software tools, hardware samples and metrology techniques have been developed with other teams. Use of neural network as an optimisation technique, for novel nanostructures search, as well as other inverse design methods. Development of theoretical physical model, to improve the accuracy of the simulations. Models developed using scientific literature. Responsible of GDS generation, used to communicate the desired design to the manufacturer. File generated with python scripts using dedicated library. Keywords : augmented reality, diffraction, optics, ray tracing simulation, python scripting, GDS

PhD funded with the European project INFORM( INterFaces in Opto-electRonic thin film Multilayer devices), realized in the Imperial College Material Department. Responsible of laboratory for 2 years, with responsibilities such as : training and security induction for new users, logistics and buying consumables for approximately 15 users. During these 2 years, an important task was to organise a lab move. The goal of this thesis is the fabrication and analysis of three-dimensional optical structures (photonic crystals) in the shape of inverse opals, and their application in optoelectronic devices, such as solar cells or LED. The main topics of research involved the fabrication of highly conductive inverse opal using transparent conductive oxide, near crack free fabrication of of inverse opal, fabrication of perovskite solar cells using previously described structure as transparent substrate or multi-coating of the inverse opal for LED fabrication. Structures have been fabricated using coating techniques like spin coating, dip coating or atomic layer deposition (ALD). Innovative methods had to be developed to ensure of full coating of the three dimensional structures. To asses these different structures, materials science techniques, such as microscopy (SEM/TEM) have been extensively used, as well as XRD or DSC. Winner of the Matthey prize upon completion of the thesis, for excellence of research in the department. Keywords: inverse opal, photonic crystal, solar cells, light emitting diodes, FDTD electromagnetic simulations, coatings, microscopy

Process engineer responsible of the CMP sector ( Chemical Mechanical Polishing) Copper and Tantalum. Responsible of a park of 15 equipments, quality following with SPC ( Statistical Process Control) and corrections of the drifts with the maintenance team. Writing of technical and quality documents. Problems solving with the 8D method. Tools qualification for some processes. Qualification of a new slurry ( polishing liquid) - Evaluation of risks and benefits comparing with the existing ( FMEA). - Interactions with buyers, quality, tests, integration for expertise. - Communication and check of the results with the customers. Result : Validation of the project, important saving for the company.

Subject : Implementation of an innovative characterization technique of doping fir the futur microelectronic and renewables energies. Internship provided by STMicroelectronics, done at the CEA, LETI laboratory. For this internship, I worked on a TEM ( transmission electron microscope) with the EELS method to characterize chemically the materials. I also made simulations to see the impact of noise in the measures, and tested new methods of signal acquisition. Work achievements : - Impact of noise measured, by simulations. We could deduce the numbre of date needed for a certain accuracy. - New method of acquisition implemented in the microscope. The method was found in the scientific litterature, and written in the microscope language by myself. - Presentation of the results to an internantional conference.

I made this internship in the field of shipbuilding, in a japanese company, Japan Marine United, which was just created after a merge. In the first part, I made fluid mechanics, by simulations on computer. The goal was to know if the addition of the rudder in the simulations increased the accuracy of results, and at what time cost. I found, with three parameters, that the simulation with rudder was closer to reality, for the double amount of time. In addition, we tried a new grid for the simulation. In the second part, I did solid mechanics, and the goal was to decrease the weight of the engine room of the ship, respecting the security rules. New design has been found, saving 20 tons of steel. In this environment, I spoke Japanese, except when we were talking of technicals terms.

During this business world discovery internship , I was a production operator behind a press. I transfered pieces of cars chassis from the machine to packing. I worked in staggered hours : one week the morning, from 5:30 am to 13:30 pm, and one in the afternoon, from 13:30 pm to 21h30 pm. I could discover the way of working of a big company, from the inside, and work in hard conditions.

In parallel with my third year at "Ecole Centrale de Lyon", I followed an international master, Nanoscale Engineering, provided by Ecole Centrale, the INSA of Lyon, and the UCBL( Lyon university). Lessons of this master were given in English. The formation was complementary to the one given in Centrale, by studying molecular modelisation, or with deepening in magnetism or semi conductor.

During the first year and the first hlaf of the second, I studied a whole of varied lessons, from physic to mechanic, passing by electricity, mathematics or economy. I choose two specialiazed lessons, in quantum mechanic and data processing. In the second years I could choose five specialized lessons, which were based on physics. In the last year, i choose the nanotechnology and bio-engineering option. I also did a master named Nanoscale engineering in parallel of this year. I also followed some lessons and projects about Research and Development.