FEM & Multiphysics Simulation Engineer (COMSOL), PhD | Thermal · Structural · Piezo/MEMS · Python

8/2021 – 4/2022

Developed a closed-form analytical model linking shell thickness and core diameter to the curvature of bent GaAs core-shell nanowires. Implemented and verified the model in Python and COMSOL Multiphysics. Built FEM simulations of strain fields and intrinsic electric fields (piezoelectric and flexoelectric) in bent nanowires, switching the flexoelectric term on and off to separate its contribution, supporting partner photoluminescence studies. Developed a carrier drift-diffusion model under piezo- and flexoelectric fields.

Physik, Finite-Elemente-Methoden, Halbleiter, Berechnungen, Python

5/2021 – 5/2024

Built coupled multiphysics FEM models in COMSOL (optical absorption, carrier drift-diffusion, heat transport and elastic wave propagation) for semiconductor nanostructures, and validated them against ultrafast experimental data; the models explained how vibrational modes are excited inside the structures. Wrote Python pipelines for automated data acquisition, signal processing and analysis, cutting the analysis cycle from days to hours. Ran parametric studies over geometry and material parameters. Coordinated proposals, reports and milestones across a multi-institute team.

Datenanalyse, Finite-Elemente-Methoden, Halbleiter, Physik, Projektkoordinator, Python

8/2017 – 3/2021

Mechanical testing of semiconductor nanowires (in-situ three-point bending) in the large-deflection, geometrically nonlinear regime; quantified elastic properties and strain response versus composition and geometry. Measured strain with digital image correlation on in-situ SEM image sequences, using my own Python correlation code, and cross-checked it with X-ray diffraction. Modelled stress-driven defect diffusion (Gorsky effect) by self-consistently solving coupled nonlinear drift-diffusion PDEs, validated against experiment. FIB/SEM imaging and EBSD orientation mapping. Six peer-reviewed publications.

Datenanalyse, Finite-Elemente-Methoden, Halbleiter, Mikroskopie, Physik, Python