NMR Pulse Sequence Design To Manipulate Dipole-Dipole Interactions

PhD defence, Thursday, 19 January 2017. Ravi Shankar Palani Velayutham.

2017.01.19 | Rikke J. Ljungmann

Ravi Shankar Palani Velayutham

During his PhD studies, Ravi Shankar Palani Velayutham has worked on solid-state NMR methods, with focus on that involving dipolar coupling interactions. NMR offers atomic resolution in the structures of biological samples and radio frequency pulses, that bring in time-dependency to the system interactions, play a crucial role. Ravi Shankar Palani Velayutham has developed a theoretical formalism to describe time-dependency of an interaction with any periodicity, which aids both in better understanding of the sequences as well as in design of novel variants addressing its limitations.

The formalism has been applied to understand established dipolar recoupling pulse sequences and the limitations of the pulse sequences, in particular their sensitivity to isotropic chemical shift which is a measure of the electron cloud surrounding the nuclei of interest, are addressed by designing novel variants of the pulse sequences, aided by insights gained through the general formalism.

The PhD degree was completed at the Interdisciplinary Nanoscience Centre (iNANO), Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Thursday, 19 January 2017 at 13.15
Place: Building 1514, room 213, Lecture Theatre I, Department of Chemistry, Langelandsgade 140, Aarhus University, 8000 Aarhus C.
Title of dissertation: Pulse Design in Solid-State Nuclear Magnetic Resonance: Study and Design of Dipolar Recoupling Experiments in Spin-½ Nuclei
Contact information: Ravi Shankar, e-mail: rshankar@inano.au.dk, tel.: +45 7166 7759
Members of the assessment committee:
Reader, Dr. Paul Hodgkinson, Department of Chemistry, Durham University, Great Britain
Adjunct Professor Kjeld Schaumburg, Department of Science and Environment, Roskilde University
Associate Professor Jeppe Vang Lauritsen (chair), iNANO, Aarhus University
Main supervisor:
Professor Niels Chr. Nielsen, iNANO and Department of Chemistry, Aarhus University
Professor P. K. Madhu, Tata Institute of Fundamental Research, Mumbai
Language: The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 17.05.2018