Univ.-Prof. Dr.rer.nat. Stephan Appelt

Univ.-Prof. Dr.rer.nat. Stephan Appelt
Univ.-Prof. Dr.rer.nat. Stephan Appelt

RWTH Aachen University
Department of Macromolecular Chemistry
Lehr- und Forschungsgebiet Niederfeld-NMR (Methoden der NMR) (joint appointment with Forschungszentrum Jülich)

Address: RWTH Aachen University
Sammelbau Chemie
Room 38B 012
Worringerweg 1
52074 Aachen
Phone: +49 241 80 20469
Fax: +49 241 80 22185
Email: appelt@itmc.rwth-aachen.de
Webpage: http://www.mc.rwth-aachen.de/aw/cms/MC/Themen/Huelle_Personen/personen/Mitarbeiter/~vfm/appelt/?lang=en

Main Research interests:

  1. Nuclear Magnetic Resonance: Low field NMR, Hyperpolarization, Polarization transfer
  2. Atomic physics: Spectroscopy of atoms in external fields, Spin Exchange Optical Pumping
  3. Laser spectroscopy: Optical Detected Magnetic Resonance, Optical Tomography
  4. Quantum physics: Topological phases, Physics of strongly coupled spins, entanglement
  5. Physical chemistry: NMR detection of chemical reactions and phase transitions

Current research:

My main research interests are in the field of nuclear magnetic resonance (NMR), atomic and optical physics as well as in fundamental quantum mechanics. The current research of my group is focused on the physics of coupled nuclear spins in ultra-low magnetic fields and in the mechanism of spin order transfer. From these fields two key technologies have developed in the last years: (1) mobile NMR spectroscopy and (2) hyperpolarization technology. The mobile NMR scanner, which includes the development of compact homogeneous low field magnets and of new NMR detection schemes, goes hand in hand with the hyperpolarization technology, which is able to produce large nuclear spin polarizations even in the absence of strong magnetic fields. At the moment, I am interested in new methods of hyperpolarization and in the development of low field NMR instruments with ultra-high resolution. This combination not only promises applications in medical, biological and material sciences but also may open the door for the experimental investigation of basic problems of quantum mechanics, such as multi particle entanglement or the measurement paradox.