Instruments

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Our surface analysis ultrahigh vacuum system with the controller rack. The base of the system is the Omicron MULTIPROBE vacuum chamber that houses a variable-temperature scanning tunneling microscope, an X-ray photoelectron spectroscopy system, low energy electron diffraction optics, a quadrupole mass spectrometer, a sputter ion source, e-beam metal evaporators, as well as gas manifolds.

The MULTIPROBE Compact surface science system from Omicron NanoTechnology. The system can be pumped down to pressures lower than 5x10-11 Torr by different stages of pumps including a rotary pump, a turbo molecular pump, an ion pump, and a titanium sublimation pump. It contains an ion gauge, a sample manipulator with an e-beam heater, and a fast entry load lock.

 

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Omicron scanning tunneling microscope (VT STM XA 650). It is equipped with a scanner for needle sensor AFM operation. It operates from 300-650 K with a Z-resolution less than 0.1 nm and a tunneling current range between 1 pA and 300 nA.

Reverse view Omicron 4-grid SPECTALEED optics. It features a thoriated tungsten filament, a beam energy ranging from 0 eV to 1 keV, a focus range of 20-500 eV, and a 45 mm-retraction.

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Omicron EA 125 U1 hemispherical energy analyzer for XPS studies. It features an energy resolution better than 10 meV (FWHM), multi-element Universal Lens with selectable analysis area and acceptance angle.

Omicron DAR 400 X-ray source for XPS studies. It features a twin anode design with an output power up to 400 W and adjustable anode voltage up to 15 kV.

 

Omicron ISE 5 cold cathode sputter ion source. It features beam currents in excess of 25-45 mA and a very wide energy range from 300 eV to 5 keV. Used for sample cleaning.

Hiden Analytical quadrupole mass spectrometer (HAL/3F PIC) used for TPD experiments.

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Agilent 7890B gas chromatograph system used for detecting reaction products in dry reforming of hydrocarbon reactions.

 

AutoChem II 2920 from Micromeritics used for studies of chemical adsorption and temperature-programmed reactions.

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Hiden Analytical HPR 20 used for detecting reaction products in dry reforming of hydrocarbon reactions.

MTI OTF-1200X furnace for catalyst synthesis.