The patent-panding microstructures on the surface lead to a better signal-to-noise ratio and enhance the IR signal. The result is a higher absorption and thus more distinct peaks.
The signal enhanced ATR crystal is optimized for the specific application. Silicon is very hard and suitable for a pH range from 1 to 12. The crystal can have almost any rectangular shape. The graph shows the absorption of acetone in water (water background) on a signal enhanced ATR crystal compared to a standard single reflection diamond ATR crystal.
The microstructures act as a passive micro sieve. This can replace centrifugation especially for small sample volumes.