Methods and apparatus for screening diverse arrays of materials are
provided. In particular, techniques for rapidly characterizing compounds
in arrays of materials in order to discover and/or optimize new materials
with specific desired properties are provided. The substrate can be
screened for materials having useful properties, and/or the resulting
materials can be ranked, or otherwise compared, for relative performance
with respect to useful properties or other characterizations. In
particular, systems and methods are provided for screening a library of
magnetic materials for their bulk magnetization, saturation magnetization,
and coercivity by imaging their individual optical Kerr rotation,
screening a library of dielectric materials for their dielectric
coefficients by imaging their individual electro-optical rotation and
screening a library of luminescent materials by imaging their individual
luminescent properties under a variety of excitation conditions. Optical
or visible luminescence systems are also provided as well as their
application to screening libraries of different materials.