ATR FTIR

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

In ATR-FTIR (Attenuated Total Reflection — Fourier Transform Infrared Spectroscopy), 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.

This is often used as a non-destructive fingerprinting method. 

USES & LIMITATIONS FOR ATR-FTIR:

  • What it is great for:
    • Identifying surface contamination
    • Identifying top-most thin film layer in a stack
    • Measuring thin films (typically 100 nm and up)

EXAMPLE OUTPUTS OF ATR-FTIR

ATR-FTIR

ATR-FTIR

INSTRUMENTS WE USE FOR ATR-FTIR

Thermo Scientific™
Smart iTR™ Attenuated Total Reflectance (ATR) Sampling Accessory
  • Eliminate sample preparation while retaining exceptional throughput with the ultra-high-performance, versatile Smart iTR Attenuated Total Reflectance (ATR) Sampling Accessory.
  • Primarily designed for use with a single bounce diamond crystal, the Smart iTR Accessory also offers other options for full configurability. It provides exceptional sensitivity and IR throughput.