Curriculum vitae and Teaching
Fields of Interest
- how geometry affects electromagnetic response and near-field effects(arrays, artificial materials, photonic band gap materials from 1D PBG (THz multilayer mirrors) to 3++D, metamaterials)
- dynamics in living cells by chemical imaging (e.g. Raman confocal microscopy), multi-modal, and multi-dimensional imaging
- imaging on microscales and nanoscales
- development of infrared microscopes and nanoscopes
- using invisible (but also visible) radiation from near infrared to terahertz and beyond
- time resolved THz spectroscopy of various samples
- THz spectroscopy of molecules in the gas phase and in liquid samples, especially proteins in solution, supramolecules (biomolecules), and in solid state materials such as semiconductors
- THz cavity enhanced, ATR (attenuated total reflection), and cavity ringdown techniques
- sub-ps THz time domain spectroscopy (THz-TDS)
- THz imaging of solid samples in collaboration with industry and within the Ruhr-Univesität Bochum (see Members at Applied Compentence Cluster THz - ACC THz)
- THz spectroscopy and evaluation of semiconductor structures, quantum wells and quantum dots in collaboration with physics and engineering departments at the Ruhr-Univesität Bochum and quantum cascade lasers with collaborating companies such as Laser Components
- semiconductor physics, laser physics
- quantum mechanics in semiconductors and topics in cosmology and astrophysics
My past and current positions and tasks involve basic and applied research, theoretical and experimental work. My past work focused on semiconductor device fabrication for an aerospace application for problems in astrophysics and THz spectroscopy. My interests are widespread in many aspects of biology, physical chemistry, biotechnology, and sensors. In my current position I tackle problems related to physical chemistry, plasma diagnostics, biochemistry, and life science.
- head of undergraduate B.Sc.
physical chemistry experimental courses and seminars (4. Term compulsory courses for main field biochemistry and chemistry students and for students who progress to the master of education at Ruhr-University Bochum - 16 hours/week + 2 office hours/week for seminar preparation of approx. 120 students in the summer semester).
- supervisor of 6. Term (M.Sc.) chemistry and biochemistry advanced practical course in microscopy
- supervisor of 7. Term biochemistry modules: infrared laser scanning microscopy of living cells
- supervisor and lecturer of students from biochemistry, chemistry, and physics in problem solving classes (thermodynamics, quantum mechanics, spectroscopy), seminars, and during experimenal work of B.Sc., M.Sc., diploma and Ph.D. candidates at Ruhr-University Bochum.
- Previous teaching:
- occasional lectures taught at UC Berkeley and at the Technical University Berlin and in group seminars at DLR, LBNL, CfPA/UCB (until 1999).
- volunteer public lecturer at Sternwarte Neanderhöhe Hochdahl e.V. (1986-1988); four full semester courses: AG Pascal - introduction into programming; C - programming, introduction to "C"; calculation of ephemerides I and II - space mechanics. Snh is an observatory, planetarium and a public education center for the education of children and adults in astronomy and science.
Skills and Laboratory Experience
- far-infrared techniques and terahertz techniques and materials.
- cryogenics, liquid helium technology.
- vacuum systems, closed-cycle refrigerators.
- high voltage and high current technology, pulse generator design.
- superconductors, high magnetic fields.
- spectroscopy - spectrometers: Fourier Transform, blazed and lamella gratings, Fabry-Perot.
- semiconductor processing: Si, Ge, SiGe, cutting, lapping, dicing, polishing, structuring, etching.
- fast electronics, THz direct detectors (InSb, GaAs, Ge detectors)and heterodyne mixers (Schottky diodes, NbN - hot electron superconducting bolometers).
- semiconductor THz lasers, CO2-optically pumped far-infrared molecular lasers.
- metals and dielectrics processing on machine shop laze and mill.
- Languages: German (native), English (fluent), French, Japanese (in progress).
- Computer: programming computers since 1980; scientific software development; mathematical modeling; image processing; Monte Carlo simulation; finite difference and finite element calculations. Data and word processing: Word, LaTex, Excel, Powerpoint, and a variety of others applications. X-Terminal, Workstation, PC; UNIX, Windows, DOS, VMS; Assembler, Basic, Pascal, FORTRAN, Forth, C; Mathematica, Matlab, LabView, Java, HTML.
- Computer-Graphics: POVRay, webmaster of department, network admistration and design of the chair physical chemistry II, 3D imaging.
- CAD: Inventor(3D), PC-draft (2D)
- amateur radio license (currently inactivated)
Course Work (Friedrich-Wilhelms University Bonn 1985-1994)
- Physics: experimental physics: experiments and courses in optics, mechanics, electronics, nuclear physics; exam: elementary particle physics; examiner: Prof. Heinloth, University Bonn, Dept. of Experimental Physics; applied physics: radio astronomy; examiner: Prof. Mebold, University Bonn, Dept. of Astronomy; theoretical physics: mechanics, electrodynamics, quantum theory, QED, QCD, cosmology; examiner: Prof. Meetz, University Bonn, Dept. of Theoretical Physics; seminar presentation: Chiral Anomalies& Differential Geometry, Relativity, Group & Topology in Quantum Field Theory, Prof. Rollnik.
- Mathematics: analysis, differential equations, Lebegue integral calculus, function theory (complex plane), forms;
linear algebra,affine geometry, differential geometry, topology, Lie algebra; exams: function theory, linear algebra
and differential geometry; examiner: Prof. Klingenberg, University Bonn, Dept. of Mathematics.
- Astronomy: several basic and advanced courses; seminar presentation: Binary Stars in Globular Clusters,
Prof. Kundt, University Bonn, Dept. of Astronomy; summer research assistant (6 weeks): Calculation of a mass function of NGC1818
using Hertzsprung-Russel Diagrams extracted from CCD images (image processing), Prof. T. Richtler, University Bonn, Dept. of Astronomy.
- Mineralogy & Crystallography: basic and advanced courses; seminars and exams: X-ray crystallography, fine
structure analysis with X-rays; examiner: Prof. Will, University Bonn, Dept. of Mineralogy.
- Anorganic Chemistry: examiner: Prof. Puff, University Bonn, Dept. of Inorganic Chemistry.
- Philosophy: logic, ethics, bibliography, history of philosophy, Kant; seminars and exams: logic, Plato - The
State, Gunnar Andersson - Criticism and Science History (Kuhns, Lakatos'and Feyerabends criticism of the
critical rationalism), Philosophical Background of the Term Mass in Physics; courses & exams taken complete two year basic studies; qualification to enter advanced research.
- Japanese: one semester language course.