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