Magnus Johnson, Associate Professor
PhD, MSc
Contact Information
Research
I mainly utilize the laser technique “Vibrational Sum Frequency Spectroscopy (VSFS)” to investigate interfaces of biological importance. VSFS has the invaluable property of being truly surface sensitive, since disordered molecules in bulk media are “invisible” for this technique. The research is a part of Biomime, the Swedish Center for Biomimetic Fibre Engineering. Important projects where we use VSFS to examine surfaces are listed below:
- The properties of polymer surfaces exposed to various environments
- Fatty acids adsorbed onto solid substrates
- Phospholipids
- The water structure at solid/liquid and liquid/vapor interfaces
- Lubrication phenomena
Publications
A vibrational sum frequency spectroscopy study of the liquid-gas interface of acetic acid-water mixtures: 1. Surface speciation.
Johnson, C.M.; Tyrode, E.; Baldelli, S.; Rutland, M.W.; Leygraf, C.
Journal of Physical Chemistry B 2005, 109, (1), 321-328.
A vibrational sum frequency spectroscopy study of the liquid-gas interface of acetic acid-water mixtures: 2. Orientation analysis.
Tyrode, E.; Johnson, C.M.; Baldelli, S.; Leygraf, C.; Rutland, M.W.
Journal of Physical Chemistry B 2005, 109, (1), 329-341.
Study of the adsorption of sodium dodecyl sulfate (SDS) at the air/water interface: targeting the sulfate headgroup using vibrational sum frequency spectroscopy.
Johnson, C.M.; Tyrode, E.
Physical Chemistry Chemical Physics 2005, 7, (13), 2635-2640.
Atmospheric corrosion of zinc by organic constituents: 1. The role of the zinc/water and water/air interfaces studied by IRAS and VSFS.
Johnson, C.M.; Tyrode, E.; Leygraf, C.
Journal of the Electrochemical Society, 2006, 153, B113-B120.
Atmospheric corrosion of zinc by organic constituents: 2. Reaction routes for zinc-acetate formation.
Johnson, C.M.; Leygraf, C.
Journal of the Electrochemical Society 2006, 153, B542-B546.
Atmospheric corrosion of zinc by organic constituents: 3. An IRAS study of the influence of formic acid.
Johnson, C.M.; Leygraf, C.
Journal of the Electrochemical Society 2006, 153, B547-B550.
Soluble monolayers of n-decyl glucopyranoside and n-decyl maltopyranoside. Phase changes in the gaseous to the liquid-expanded range.
Kumpulainen, A.; Persson, C.M.; Eriksson, J.C.; Tyrode, E.C.; Johnson, C.M. Langmuir 2005, 21, 305-315.
Hydration state of non-ionic surfactant monolayers at the liquid/vapor interface: Structure determination by vibrational sum frequency spectroscopy.
Tyrode, E.; Johnson, C.M.; Kumpulainen, A.; Rutland, M.W.; Claesson, P.M.
Journal of the American Chemical Society 2005, 127, (48), 16848-16859.
Understanding sum frequency generation from LB films of variable thickness: Polar orientation and substrate effects.
Nishida, T.; Johnson, C.M.; Holman, J.; Osawa, M.; Davies, P.; Ye, S.
Physcial Review Letters 2006, 96, 77402-77405.
Study of the adsorption of ammonium perfluorononanoate at the air/water interface by vibrational sum frequency spectroscopy.
Tyrode, E.; Johnson, C.M.; Rutland, M.W.; Bain, C.D.
Journal of Physical Chemistry C 2007, 111, 316-329.
Structure and hydration of ethylene oxide surfactants at the air/liquid interface. A vibrational sum frequency spectroscopy (VSFS) study.
Tyrode, E.; Johnson, C.M.; Rutland, M.W.; Claesson, P.M.
Journal of Physical Chemistry C. 2007, 111, 11642-11652.
Surface and bulk structure of poly-(lactic acid) films studied by vibrational sum frequency generation spectroscopy.
Johnson, C.M.; Sugiharto, A.B.; Roke, S.
Chemical Physics Letters 2007, 449, 191–195.
Molecular in situ studies of atmospheric corrosion.
Leygraf, C.; Hedberg, J.; Qiu, P.; Gil, H.; Henriquez, J.; Johnson, C.M.
Corrosion, 2007, 63, 715.
Observing three dimensional skeletal structures of macromolecules at interfaces.
Sugiharto, A.; Johnson, C.M.; Dunlop, I.; Roke, S.
Journal of Physical Chemistry C. 2008, 221, 7531-7534.
Application and generation of high power femtosecond pulses in the vibrational fingerprint region.
Sugiharto, A.; Johnson, C.M.; Dunlop, I.; Roke, S.
Applied Physics B. 2008, 91, 315-318.
Book chapters
Infrared spectroscopy, Chapter 7 in Analytical methods in corrosion science and technology.
Leygraf, C.; Johnson, C.M.
Editors: Marcus, P; Mansfeld, F. Boca Raton, FL. Taylor & Francis Group, LLC. 2005.
