Page Areas:



Current Submenu:

Additional Information:

News


Position Indication:

Content

Laser-assisted Diagnostics


Laser-assisted techniques are increasingly employed in industry for both the characterization and processing of materials. Our scientific work concentrates on fundamental research of laser-assisted processes for materials diagnostics and on the development and application of advanced methods for quantitative compositional analysis of composite materials. We employ mainly laser-plasma based methods, especially laser-induced breakdown spectroscopy (LIBS), for materials analysis [1 - 5].
1 J.D. Pedarnig: Application of laser induced breakdown spectroscopy to the analysis of secondary materials in industrial production. Chapter 16, pp 496-521, in "Laser spectroscopy for sensing: fundamentals, techniques and applications", Editor: M. Baudelet, Woodhead Publishing (2014), ISBN 978-0-85709-273-1
2 N. Huber, S. Eschlböck-Fuchs, H. Scherndl, A. Freimund, J. Heitz, J.D. Pedarnig: In-line measurements of chlorine containing polymers in an industrial waste sorting plant by laser-induced breakdown spectroscopy. Applied Surface Science 302, 280-285 (2014).
3 J.D. Pedarnig, M.J. Haslinger, M.A. Bodea, N. Huber, H. Wolfmeir, J. Heitz: Sensitive detection of chlorine in iron oxide by single pulse and dual pulse laser-induced breakdown spectroscopy. Spectrochimica Acta Part B 101 (2014) 183–190.
4 P.J. Kolmhofer, S. Eschlböck-Fuchs, N. Huber, R. Rössler, J. Heitz, J.D. Pedarnig: Calibration-free analysis of steel slag by laser-induced breakdown spectroscopy with combined UV and VIS spectra. Spectrochimica Acta Part B 106 (2015) 67–74.
5 S. Eschlböck-Fuchs, P.J. Kolmhofer, M.A. Bodea, J.G. Hechenberger, N. Huber, R. Rössler, J.D. Pedarnig: Boosting persistence time of laser-induced plasma by electric arc discharge for optical emission spectroscopy. Spectrochimica Acta Part B 109 (2015) 31-38.


Our recent projects in the field of laser-assisted diagnostics:



** imPACts

This work is supported by the Austrian Research Promotion Agency (FFG) as COMET K-project (PI of sub-project MP1: J.D. Pedarnig)


In the K-Project "Industrial Methods for Process Analytical Chemistry - From Measurement Technologies to Information Systems" new process analytical measurement techniques shall be realized. The measured data will be used for the optimization of process-modeling and will enable self-sufficient and autonomous control and optimize production processes in process control systems. In the Multifirm-Project MP1 "Development of novel measurement technologies for process analytics", novel measurement methods, focusing on industrial-suited on-line implementation, will be developed as a broad fundament for future needs in process analytics. This includes methods, such as Laser-Induced Break-down Spectroscopy (LIBS), Mid-infrared Quantum Cascade Lasers (QCL) and Micro Electro-Mechanical Systems (MEMS). In this project, we closely cooperate with voestalpine Stahl GmbH, Linz and Kraiburg Austria GmbH, Geretsberg/Oberösterreich.



** Calibration-free analysis of minor and major elements in steel slag employing homogenized laser-induced plasma

The activities for improved calibration-free LIBS analysis are supported by the Austrian Research Promotion Agency (FFG) in the framework of “Production of the Future” (PI: J.D. Pedarnig)


These activities are in close collaboration with the Humboldt University in Berlin and the Federal Institute for Materials Research and Testing (BAM), Berlin (both: Prof. Dr. U. Panne and Dr. I. Gornushkin), and with voestalpine Stahl GmbH, Linz.



** Christian Doppler Laboratory for Laser-Assisted Diagnostics

This laboratory was supported by the Christian Doppler Research Association (Directors: J.D. Pedarnig, J. Heitz)


The Christian Doppler Laboratory for “Laser - Assisted Diagnostics” (LAD) was located at the Institute of Applied Physics of the Johannes-Kepler-University Linz from 2006 to 2014. In collaboration with voestalpine Stahl GmbH, Linz and AVE Österreich GmbH, Hörsching, the CD-laboratory concentrated on application-oriented fundamental research of laser-assisted processes for materials diagnostics. More details may be found under: http://www.jku.at/lad.



Publications:

Laser-induced optical breakdown spectroscopy of polymer materials based on evaluation of molecular emission bands
S. Trautner, J. Jasik, C. G. Parigger, J. D. Pedarnig, W. Spendelhofer, J. Lackner, P. Veis, J. Heitz
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 174 (2017) 331-338