Desorption/ionization on silicon
Desorption/ionization on silicon (DIOS) is a soft laser desorption method used to generate gas-phase ions for mass spectrometry analysis. DIOS is considered the first surface-based surface-assisted laser desorption/ionization (SALDI-MS) approach.
Source: Wikipedia — Desorption/ionization on silicon (CC BY-SA 4.0)