arrays are provided for multiplexed evanescent scanning by allowing for high - contrast surface plasmon resonance images thereof . the arrays target features are typically biopolymeric in nature , though they may be any sort of chemical or ligand . the type of scanning is such that there is no need for probe labeling . as no labeling is required , a broader range of applications than otherwise possible is facilitated . in the subject arrays , target features are set upon a noble metal film deposited on a substrate . interfeature areas are adapted to trap , divert and / or bleed - away light so that light directed through the substrate will not be reflected by those areas and interfere with evanescent scanning of the reflective areas upon which intended target features are provided . geometric and materials - based light attenuating features are contemplated . arrays as described , hardware and software as required for reading such arrays , and associated methodology are covered .