Beamline 73 - The infrared beamline at MAX-lab.
Synchrotron Infrared Microspectroscopy and High Resolution Infrared Spectroscopy.
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Beamline 73 - The infrared beamline at MAX-lab. Synchrotron Infrared Microspectroscopy and High Resolution Infrared Spectroscopy.
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2011-05-02 Endogenous Proteins Found in a 70-Million-Year- Old Giant Marine LizardFossil – just stone? No, a research team in Lund, Sweden, has discovered primary biological matter in a fossil of an extinct varanoid lizard (a mosasaur) that inhabited marine environments during Late Cretaceous times. Using state-of-the-art technology, the scientists have been able to link proteinaceous molecules to bone matrix fibres isolated from a 70-million-year-old fossil; i.e., they have found genuine remains of an extinct animal entombed in stone. An article about the discovery is now published in the scientific journal PLoS ONE. http://dx.plos.org/10.1371/journal.pone.0019445 2010-12-20
Left: Laser annealed SiOx film. Middle: Laser made spots in reflection mode. Right:Laser made spots in transmission mode. Continuous-wave laser annealing of Si-rich oxide: A microscopic picture of macroscopic Si-SiO2 phase separation JOURNAL OF APPLIED PHYSICS 108, 124301 ,2010 Leonid Khriachtchev,1,a) Timur Nikitin,1 Markku Räsänen,1 Alexandra Domanskaya,1 Simona Boninelli,2 Fabio Iacona,2 Anders Engdahl,3 Jyrki Juhanoja,4 and Sergei Novikov, 5 1Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014, Finland 2MATIS IMM CNR, Via Santa Sofia 64, I-95123 Catania, Italy, 3MAX-lab, Lund University, P.O. Box 118, 22100 Lund, Sweden 4Top Analytica, Ruukinkatu 4, FIN-20540 Turku, Finland, 5Electron Physics Laboratory, Aalto University, P.O. Box 3000, FIN-02015 HUT, Finland (Received 11 August 2010; accepted 28 October 2010; published online 17 December 2010) We report on the first observation of the macroscopic (long-range)Si-SiO2 phase separation in Si-rich oxide SiOx (x<2)obtained by continuous-wave laser annealing of free-standing SiOx films. The effect is analyzed by a unique combination of microscopic methods (Raman, transmission, photoluminescence, and infrared spectroscopy, transmission electron microscopy, electron energy loss spectroscopy, and x-ray photoelectron spectroscopy). Three regions can be distinguished on a SiOx free-standing film after 488 nm laser annealing at intensities above 104 Wcm−2: central spot, ring around the central spot, and pristine film outside the irradiated area. In the pristine SiOx material, small Si nanocrystals (Si-nc) (diameters of a few nanometer) are surrounded by SiO2 with an addition of residual suboxides, the Si-nc being produced by annealing at 1100 °C in a furnace. The central spot of the laser-annealed area (up to 30 fm wide in these experiments) is practically free of Si excess and mainly consists of amorphous SiO2. The ring around the central spot contains large spherical Si-nc (diameters up to 100 nm)embedded in amorphous SiO2 without the presence of suboxides. Laser-induced temperatures in the structurally modified regions presumably exceed the Si melting temperature. The macroscopic Si-SiO2 phase separation is connected with extensive diffusion in temperature gradient leading to the Si concentration gradient. The present work demonstrates the advantages of high spatial resolution for analysis in materials research. © 2010 American Institute of Physics. [doi:10.1063/1.3520673]
2009-08-25 Current projects at Beamline 73. 1. Kinetics of cluster formation and structure changes in alcohols during phase transition from gas to liquid. Doroshenko, Iryna, Kiyv National Taras Shevchenko University 2.Chemical Mapping of Single Aerosol
Particles. Johnson, Matthew, Dept
Chemistry, University of 3. Biomolecular preservation across deep time. Lindgren, Johan, Department of Geology, Lund University 4. High resolution spectroscopy on HClO4. Nelander, Bengt, Max-lab 5. High resolution far infrared spectroscopy of parahydrogen matrices. Nelander, Bengt, Max-lab 6. Investigation of the spectroscopic properties of combustion generated particles from the near to far infrared regions using synchrotron radiation. Ossler, Frederik, Combustion Physics, Lund University 7. High resolution FTIR and PIXE imaging for determining cell-cell interactions in angiogenic switch of brain cancer development. Petibois, Cyril, University of Bordeaux - CNRS UMR5084 8. High resolution infrared spectroscopic studies of highly unstable intermediate products of alkene ozonization reaction. Sablinskas, Valdas, Faculty of Physics, Vilnius University 9. A model system for studies of diffusion of nutrients in bone tissues using infrared microspectroscopy. Ståhle, Per, Solid Mechanics, Lund University 10. Microscopy tests. Engdahl, Anders, Uvdal, Per, MAX-lab 11. Exploring the properties of the infrared microscope through new and old projects. Engdahl, Anders, Uvdal, Per, MAX-lab 12. The Weakly Bound Complex of CO and HBr: A High Resolution Far-Infrared Study. Wugt Larsen, René, Institut für Physikalische Chemie, Georg-August-Universität Göttingen
2007-08-17. The infrared microscopy part of the beamline is now also in full operation. Details about equipment can be found here. Equipment. Some projects are found here. Projects. And some publications using the infrared microscope. Publications.
Synchrotron Infrared Microspectroscopy. (SIM)
High Resolution Infrared Spectroscopy. (HR)
Low Temperature
Molecular Spectroscopy
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anders.engdahl@maxlab.lu.se with questions or comments about this web site.
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