Infrared spectrometer

Near- & Mid-Infrared Spectroscopy Laboratory

Infrared spectrometer - Thermo Nicolet Nexus 670

  • Spectral range: 11,000 to 400 cm-1 (NIR to mid-IR)
  • Spectral resolution: variable with max 0.125cm-1
  • IR detector: LN2 cooled MTC-B detector (11,700-400cm-1)
  • Near IR source: tungsten halogen (25,000-2000 cm-1)
  • Mid IR source: globar (9,600-20 cm -1)
  • Ge/KBr beam splitter: (11,000 - 375 cm-1)

Sampling accessories

  • Transmittance: standard transmission accessory
  • Attenuated total feflectance: Golden Gate diamond ATR accessory
  • Reflectance: Harrick "Cricket" combined diffuse reflectance and specular reflectance accessory
  • Fiber ATR probe: diamond tip attached to PIR optical fiber cable (3300 -550 cm-1) & a fiber mount
  • Emission port: internal directing mirrors and instrument port for focusing an external emission source

Sample preparations

  • Powder sample: no sample preparation needed
  • Liquid sample: no sample preparation needed
  • Film sample: no sample preparation needed
  • Rock sample: to be cut with at least one bottom flat surface for reflectance study (< 5 mm diameter)

Scheduling Information

Contact Professor Alian Wang at alianw@wustl.edu or view our fee schedule for more details.

Fee Schedule