Jonas Hedberg, Post-doc
Position:
Post-doc
Contact
Tel. +46 8 7906642 Email: jhed@kth.se
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Curriculum Vitae
- Born in 1979 in Stockholm, Sweden.
- Master of Science in Engineering Physics in 2004 at KTH.
- Doctoral degree in Corrosion Science 2009, Surface and Corrosion Science, KTH, with the thesis “A Molecular view of initial Atmospheric Corrosion”.
- Post-doc at Surface and Corrosion Science 2010-presently.
- Researcher at IVL Swedish Environmental Research Institute,2012-presently (part-time).
Research activities
Health and environmental issues of nanoparticles
There is a growing concern and need to characterize and evaluate engineered nanoparticles that are dispersed into the environment from a health and environmental perspective. The research aims to aid industry and legislators in risk assessment on the use of nanoparticulate matter. Silver nanoparticles are currently the target of investigations. As this material is used more and more in consumer products, there is a need to characterize these types of particles under different environmental settings. The research is carried out in a cross disciplinary fashion, including collaborations with e.g. toxicologists.
Protein-metal interactions
Protein-induced metal release from metals and alloys is of high concern in biological environments, as some of these alloys (e.g., stainless steel grade AISI 316L) are used as implant materials and in food processing. Also, protein-induced corrosion in any applications where biofilms can be formed (for example in sea or wastewater) is a serious problem. Therefor, improving the understanding on how and why proteins influence corrosion behaviour is highly motivated.
A multi-analytical approach is used in order to improve knowledge on protein-metal interactions, with emphasis on vibrational spectroscopy techniques. Raman, infrared reflection absorption spectroscopy (IRAS) and vibrational sum frequency spectroscopy (VSFS) are the vibrational techniques of choice. By using these techniques, information on e.g. surface binding and orientation of adsorbed protein (using VSFS), conformation of adsorbed proteins and complexes (Raman spectroscopy), and coordination between metal and protein (IRAS), can all be obtained, enabling an encompassing picture of the interaction between proteins and the metals of interest.
Award
Göran Gustafsson’s prize for young researchers. 2012.
Selected publications
- Hedberg, J.; Lowe, T.; Lundin, M.; Blomberg, E.; Wold, S.; Odnevall Wallinder, I.; “Interactions between surfactants and silver nanoparticles of varying charge”, Journal of Colloid and Interface Science, 2012, 369, 193-201
- Tyrode, E; Hedberg, J; “A Comparative Study of the CD and CH Stretching Spectral Regions of Typical Surfactants Systems Using VSFS. Orientation Analysis of the Terminal CH3 and CD3 Groups”; Journal of Physical Chemistry C, 2012, 116, 1080–1091.
- Hedberg, Y.; Hedberg J.; Liu Y.; Odnevall Wallinder I.; ”Complexation- and ligand-induced metal release from 316L particles: importance of particle size and crystallographic structure”. Biometals, 2011, 24, 1099-1114.
- Hedberg, J.; Baldelli, S.; Leygraf, C; Tyrode, E.;"Molecular structural information of the atmospheric corrosion of zinc studied by vibrational spectroscopy techniques. Part I. Experimental approach." Journal of the Electrochemical Society (2010), 157(10), C357-C362.
- Hedberg, J.; Baldelli, S.; Leygraf, C. "Evidence for the Molecular Basis of Corrosion of Zinc Induced by Formic Acid using Sum Frequency Generation Spectroscopy" Journal of Physical Chemistry Letters (2010) 1(10), 1679-1682.