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Pushing the limits of IR

spectroscopy. Pushing the limits of IR. …an update of new possibilities in CLS. Ferenc Borondics. CAP Meeting 2011, St. John’s, NL. The Canadian Light Source. Location, location, location. “. “. The Mid IR beamline. The Mid IR beamline. Synchrotron advantage for Mid IR. Globar

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Pushing the limits of IR

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  1. spectroscopy Pushing the limits of IR …an update of new possibilities in CLS Ferenc Borondics CAP Meeting 2011, St. John’s, NL

  2. The Canadian Light Source Location, location, location... “ “

  3. The Mid IR beamline

  4. The Mid IR beamline

  5. Synchrotron advantage for Mid IR Globar (black body) Synchrotron

  6. Microscopy… X-ray microscope Ernst Abbe Big objective Oil immersion objective NA = 0.65

  7. Diffraction limited resolution. Not possible with regular sources. Synchrotron Radiation Globar Visible 2.46 μm 3000 cm-1 2000 cm-1 1500 cm-1 2000 cm-1

  8. …recent developments Microscopy Micro-PAS Reflection setup Transmission Reflection Grazing Incidence ATR SR FPA imaging Low temperature 64x64 element FPA, Hyperion 3000 Time resolved measurements PEM for polarization NIR detection 4ns time resolution, Step/Scan bench

  9. Microscopy…plans for the future FIR microscopy extension – bolometer attachment In situ pressure measurement for high-pressure experiments Breaking the diffraction limit

  10. Microscopy…plans for the future New beamline

  11. Users – various fields Usage: 68% oversubscribed Biology: seeds, tissue sections, plant sciences, paleontology, environmental science 60% Chemistry: electrochemistry, fundamental food science, diamonds 15% Physics: solid state physics, geophysics, high-pressure superconductivity 15%

  12. Kinetics: decrease RC time constant CE WE Flow Through Holes Small electrode size Need for SR RE Rosendahl SM; Borondics F; May T; Pedersen T; Burgess I, Anal. Chem. 83 (10), 3632-3639, 2011.

  13. Ecell/I e-chem cell Apply Eref Apply Estep Apply Erest DAQComputer potentiostat FTIRMicroscope Let’s roll! Get ready… Direct detector signal Spectra Rosendahl SM; Borondics F; May T; Pedersen T; Burgess I, Anal. Chem. 83 (10), 3632-3639, 2011.

  14. Results Fe(CN)64- = Fe(CN)63- + e- Fe(CN)64- loss creation Fe(CN)63- Rosendahl SM; Borondics F; May T; Pedersen T; Burgess I, Anal. Chem. 83 (10), 3632-3639, 2011.

  15. 20μm 160nm 42nm 20μm 13nm Exfoliated superconductors L.J. Sandilands et al., PRB 82, 064503 (2010) 110nm 100nm 10μm Bi2Sr2Ca1-xDyxCu2O8+δ x=0.3,0.4 Topological insulators http://www.physics.utoronto.ca/~kburch/

  16. Graphene NbSe2 1mm Exfoliation Bi-2212 MoS2 (Scotch tape-ing)

  17. …another example (ALS)

  18. Bilayer graphene

  19. Thank you! Ferenc Borondics Mid IR beamline Canadian Light Source http://midir.lightsource.ca

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