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Research topics

Our research focus is on the investigation of the interaction of magnetic/electric fields, VIS-, IR-radiation and acoustic waves with solid and soft matter. We combine various analytical tools (SQUID-magnetometry, VIS-, FTIR-, Raman spectroscopy, NMR and laser-photoacoustics) to explore the magnetic, optic and acoustic properties of crystalline, amorphous and particulate materials. Particular interest lies in nano-sized materials. The nucleation of plasma-deposited hard coatings (diamond) as well as other carbon phases like graphene, nano-walls, etc. are investigated by Raman spectroscopy. Magnetic nano-materials are investigated by SQUID magnetometry, NMR and, in the case of antiferromagnetic materials, also with Raman spectroscopy. Biological tissue is subject of the "soft matter" research in the areas of biomagnetism, biophotonics and photoacoustics. As a unique feature, cryogenic infrastructure (liquid helium) has been built up to extend the experimental possibilities, and which is also available for external services. Ongoing are the supervision of doctoral and master theses of industrial relevance and third party projects with industry.

Biophotonics

In our biophotonics research the primary topic is photoacoustic imaging of biological tissue. Our focus is on the development of novel sensors and methods for photoacoustic tomography and microscopy.

SQUID-magnetometry on biogenic nanomagnets

In a cooperation with the Medical University Graz (Universitätsklinik of Neurology)we investigate the magnetic properties of post-mortem brain samples using SQUID-magnetometry achieving an accuracy of microgram iron per gram brain tissue.

Research with Industry

Investigation of structural steel and other magnetic materials with SQUID-magnetometry, development of plasma deposition with inverted "fire balls", deposition and characterization of carbon phases: diamond, graphite, graphene, nano-walls etc., and bachelor, master and PhD theses related to "automotive" (AVL, magna, VirtualVehicle, etc.) and semiconductors (Infineon).

Contact

Ao.Univ.-Prof. Dr.phil.

Peter Knoll

Institut für Physik

Phone:+43 316 380 - 5220, 8574

Univ.-Prof.i.R. Dr.phil.

Heinz Krenn

Phone:+43 316 380 - 5188

Ao.Univ.-Prof. Mag. Dr.rer.nat.

Guenther Paltauf

Phone:+43 316 380 - 8556

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