Esearch in the Martin laboratory focuses on taking vibrational spectroscopy measurements at both [1] gas-solid and [2] solid-solid interfaces. These measurements are made through the use of a polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) system. IRRAS with a Fourier transform infrared (FT-IR) spectrometer has sufficient sensitivity to measure films of thicknesses less than 200 nm.i,ii. In addition to this sensitivity, advantages of IRRAS include non-destructive interrogation of the sample by the IR probe, high spectral resolution of the FT-IR spectrometer, and a range of possible temperature and pressure conditions during experiments allowing for in situ measurements.iii
