IR Spectroscopy#

Part of the Electromagnetic Spectrum

EM Spectrum#

Infrared absorbtion#

Identify functional groups within molecules.

We used a Nicolet Nexus 670 FTIR spectrometer combined with an external mercury cadmium telluride (MCT) detector to aquire our IR spectrum.

spectrum = Intensity (y axis) vs Wavenumber (x axis)

  • red-shift -> Bathochromic shift (shift to longer wavelength)

  • blue-shift -> Hypsochromic shift (shift to shorter wavelength)

Ice growth and thickness measurments#

The ice films are grown by physical vapour deposition (pure or mixed).

  • prior to deposition background is aquired


Insert background figure

(may be can go in previous section)

Monitoring the growth#

Monocromatic light (HeNe laser with wavelength λ = 638 nm) is

In Space#