Charge regulation and surface complexation modeling in nanoscale 2D geometries: benchmarking and test cases of a novel code (CRESCENDO)
Stausberg L., Heberling, F., Lützenkirchen, J.
Physical Chemistry Chemical Physics, 2026
Overview
THIS WEBSITE IS WORK IN PROGRESS
Currently Ongoing Research
CRESCENDO
Development of a Charge Regulation Surface Complexation Model for the calculation of equilibrium speciation of surfaces with interacting electric double layers in 2D.
Electrostatic interaction is calculated through Finite Element solution of the Poisson-Boltzmann equation and chemical equilibrium is calculated iteratively using a Newton-Raphson optimization.
Link to GitLab pageLink to Article
Publications
Operando observation of dissolution kinetics and alteration layer formation of heavy ion irradiated borosilicate glass
Lönartz M.I., Stausberg L., Fritzsche M.B., Trautmann C., Geisler T.
npj Material Degradation, 2026
Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
Lönartz M.I., Stausberg L., Trapp-Müller G., Dohmen L., Lenting C., Fritzsche M.B., Geisler T.
Journal of Visualized Experiments, 2025
Publication Title
Authors, Journal Name, Year
Curriculum Vitae
Karlsruhe, Baden-Württemberg
lasse@lasse-stausberg.de
Date and city of birth: 18/11/1998 in Aachen, DE
Work Experience
PhD Student | Institute for Nuclear Waste Disposal (KIT-INE) (05/2025 - current)
Research and preparation of a Dissertation at the Institute for Nuclear Waste Disposal of the Karlsruhe Institute of Technology.
Geochemical characterization of clay as well as development of Charge Regulation Surface Complexation Models for clay minerals as part of the DFG/ANR funded BARRIERS Project.
Research Assistant | RFWU Bonn (05/2024 - 10/2024)
Conducted Raman spectroscopic measurements, preparation of samples and solutions for Fluid-Cell Raman Spectroscopy
Intern | WZR Ceramic Solutions (10/2023 - 11/2023)
Characterization and testing of ceramic materials, mixing of raw materials for additive manufacturing of ceramic components
Research Assistant | RFWU Bonn (07/2022 - 06/2023)
Conducted Raman spectroscopic measurements
Intern, Working Student, Bachelor Thesis | SCHOTT AG Mainz (02/2021 - 08/2021)
Writing Project- and Bachelor Thesis, sample preparation and analysis, conducting vibrational spectroscopic measurements, troubleshooting measurement equipment
Education
M.Sc. Geochemistry/Petrology | RFWU Bonn (10/2021 - 02/2025)
GPA: 1.3
Master Thesis written at the Institute of Geosciences, Rheinische Friedrich-Wilhelms-University Bonn, Working group for Mineralogy and Geochemistry.
Title: „Real-time and in situ Raman spectroscopy of the aqueous corrosion of heavy ion irradiated glass”
B.Sc. Geosciences | RFWU Bonn (10/2018 - 08/2021)
GPA: 1.4
Bachelor thesis written at the SCHOTT AG Mainz
Title: „Ermittlung des Brechungsindex optischer Gläser mittels Raman-Spektroskopie" (Determination of refractive indices of optical glass through Raman spectroscopy)
Knowledge and Skills
- Fluent in German (first language) and English, intermediate proficiency certificate in Latin
- Intermediate proficiency with Python, including the Finite Element Library FEniCSx, and PostgreSQL
- Basic proficiency in Origin PRO for data processing and visualization
- Proficient in use with Microsoft Office products
- Proficient in WITech Suite Five and LabSpec6 for conducting Raman-spectrometric measurements
Extracurricular Activities
Member of the Student Council of Geoscience at the RFWU Bonn during the entirety of study duration, 07/2022 to 07/2023 elected member of the Student Council