Curriculum vitae

Materials scientist and engineer, background in chemistry.

04/2025 — present

Research Associate

Chair of Micro- and Nanoanalytics, University of SiegenSiegen

  • PhD project on complex materials, using TEM and FIB-SEM for the analyses.
  • 4D-STEM acquisition, and processing of the resulting datasets on the university's high-performance computing cluster.
  • TEM
  • FIB-SEM
  • 4D-STEM
  • py4DSTEM
  • HPC
03/2023 — 07/2024

Research & Teaching Assistant

Chair of Surface and Materials Technology, University of SiegenSiegen

  • Supervision of lab courses on thin film technology.
  • Maintenance of CVD and PVD systems.
  • CVD
  • PVD
  • Thin films
  • Teaching
01/2024 — 03/2024

Working Student

Dynamit Nobel Defence GmbHWilnsdorf

  • R&D scientist in the working group “Materials, Chemistry and Processes”.
05/2022 — 03/2023

Research Assistant

Chair of Chemistry & Structure of Novel Materials, University of SiegenSiegen

  • R&D of ultra high performance concrete (UHPC) as part of a third-party funded project (ceEntek Pte. Ltd.).
  • UHPC
  • Cement chemistry
11/2019 — 05/2022

Working Student, Wholesale

Metro AGSiegen

  • Shelf stocking, quality assurance and customer management.
2022 — 2025

M.Sc. Materials Science and Engineering

University of SiegenSiegen

  • Specialisation in coating technology, solid state chemistry, and micro- and nanoanalytics.
  • Thesis: Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM) Analysis of a NiCu Alloy Using py4DSTEM on a High-Performance Computing Cluster. That dataset is the one on the front page.
2017 — 2022

B.Sc. Chemistry

University of SiegenSiegen

  • Specialisation in materials chemistry.
  • Thesis: Electron microscopic investigation of the hydration products of tricalcium silicate.
  1. Keyur Solanki, Paul Lobpreis, Carolin Zinn, Axel von Hehl. Laser powder bed fusion and heat treatment of a Mg2Si-rich aluminium alloy. Progress in Additive Manufacturing 11(5), 4611–4631 · May 2026 · 10.1007/s40964-026-01583-1
  2. Paul Lobpreis. Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM) Utilizing a CMOS Camera. Poster, Microscopy Conference (MC2025), Karlsruhe, Germany · September 2025
  3. Paul Lobpreis. Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM) Analysis of a NiCu Alloy Using py4DSTEM on a High-Performance Computing Cluster. Master's thesis, University of Siegen · February 2025

mac4DSTEM

A free, native macOS application for interactive 4D-STEM analysis: virtual imaging, Bragg disk detection, strain and orientation mapping, phase reconstruction. Built with SwiftUI, MLX and Metal so the work runs on the GPU in a laptop instead of a cluster queue. GPL-3.0.

Microscopy
TEM / STEM, 4D-STEM, EDS, EELS, SEM
Programming
Python, py4DSTEM, NumPy, HPC / cluster workflows
Data visualisation
Matplotlib, PGF/TikZ
Typesetting
LaTeX, MS Office
CAD
SolidWorks
Languages
German (native), English (C1, UNIcert III)