ATR FTIR

MULTI-REFLECTIVE ATTENUATED TOTAL REFLECTION FTIR (ATR-FTIR) SERVICES

In ATR-FTIR, the sample lies on a crystal that guides the light to bounce on the sample’s surface multiple times. One advantage of ATR-IR over transmission-IR, is the limited path length into the sample, allowing to sample the very top of the sample’s surface (~1µm) with high signal to noise ratio.

USES & LIMITATIONS FOR ATR-FTIR:

  • What it is great for:
    • Identifying surface contamination
    • Identifying top-most thin film layer in a stack

EXAMPLE OUTPUTS OF ATR-FTIR

ATR-FTIR

INSTRUMENTS WE USE FOR ATR-FTIR

Multi-Reflective Attenuated Total Reflection FTIR.