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Facilities
MACAL
Optical spectroscopy
Varian 610-IR FT-IR spectrometer/Varian 610-IR IR microscope

Varian 610-IR FT-IR spectrometer/Varian 610-IR IR microscope

The research grade IR spectrometer presently equipped with a Ge/KBr beamsplitter and DTGS and linearized MCT broad band detectors for mid- and partially near-IR (7500-350 cm^-1) measurements. Far-IR (400-40 cm^-1) measurements are also available by replacement of the detector and beamsplitter with a DTGS detector with PE window and Mylar 12µ beamsplitter.
The IR microscope is coupled to the IR spectrometer and can be used as an optical or infrared microscope in both transmission and reflection modes. It has a motorized x-y-z stage and equipped with a linearized MCT detector with a 100 x 100 µm detector element allowing analysis of samples down to 10 µm.

Capabilities/Accessories

Accessories to the IR spectrometer:

Specac-1800 liquid cell with different windows (KBr, CaF₂, etc.) and spacers for measurement of liquids, solutions in transmission mode.
20 ton pressing tool and die presses for making ø10 mm and ø16 mm pellets from powders to measure them in transmission mode.
10 cm gas cell to measure IR spectra of gases.
Specac Goldengate single reflection attenuated total reflection (ATR) accessory with a diamond ATR element for quick measurements (no sample preparation needed) of IR spectra of solids (powder, polymer, film) and liquids.
Homemade transmission cell connected to high vacuum system. Achievable conditions: pressure <10-7 Torr, temperature: RT-300 °C. In situ investigation of surface species during adsorption or heterogeneous catalytic reactions is possible.
PIKE DiffusIR diffuse reflection accessory. Solid samples in powder form can be investigated without any sample preparation.
PIKE environmental chamber for DiffusIR. The chamber can be connected to the high vacuum system and in situ investigation of surface species during adsorption or heterogeneous catalytic reactions is possible. Achievable conditions: pressure ~10^-6 Torr, temperature: RT-900 °C.

Accessories to the IR microscope:

Linkam THM-600 heated stage with a temperature control (RT-600 °C). The stage provides possibilities to study phase transitions and decompositions at elevated temperatures in a controlled atmosphere.
Slide-on micro ATR with Ge ATR element, contact area: 20-50 µm.
Grazing angle objective for investigation of thin layers on IR reflective materials (e.g. monolayer on metals).