Dr. Johannes Sachs

System design and sensor technology specialist for phased array antennas in satellite communication applications -- Idea scouting and prototyping of integrated sensor devices -- Soft- & Hardware development of electronics and control -- Feasability analysis with regard to special operating conditions

PostDoc (since 2020) and PhD candidate in the 'Micro, Nano and Molecular Systems Lab'. - Development (hard- and software) of optical setups (spectroscopy) - Optical laboratory manager - Technical assistance for thin-film technology (vacuum systems) - Supervision of several student work (internships, B.Sc. Thesis)

Tutor für die englischsprachige Übung zur Vorlesung „Fundamentals of Optics and Photonics“

Student assistant for Infrared-Photoluminescence-Spectroscopy of organic solar cells

Student assistant for assessing time-series analysis methods for electrical load forecasting within a smart grid project (evaluation, documentation & implementation in Matlab)

Internship in a metal workshop (construction and customer service)

Learned about various tools and methods used by data scientists and developed an understanding of the key steps involved in tackling data science problems (courses included: Introduction, Tools, Methodology, SQL) https://www.edx.org/professional-certificate/data-science-foundations

Dissertation: Motion, Symmetry and Spectroscopy of Chiral Nanostructures -- Theory/Experiments of custom-designed micro- and nanostructures for future biomedical, and novel sensing applications. A new spectroscopy method was developed and the role of symmetry for such applications was examined.

Focus: Semiconductors, Optics, Nanotechnology M.Sc. Thesis: Fabrication and Characterization of Epitaxially Grown Kesterite for Thin-Film Solar Cells -- Novel thin-film materials for photovoltaic applications were made via PVD and characterized with XRD, TEM and Raman spectroscopy.

B.Sc. Thesis: Atomic force microscopy with ultra large areas - Influence of the humidity on the writing process of Dip Pen Nanolithography, -- Statistical evaluation of nanostructure geometries by means of AFM measurements.