Optical properties of microstructures for computer screen photoassisted experiments

SU-8 microstructured devices aiding the fluorescence detection in computer screen photoassisted experiments are demonstrated. The structures exploit computer screens as controlled light sources and web cameras as imaging detectors, separating the excitation by total internal reflection and redirecting surface generated fluorescence toward the detector. The devices are essentially disposable and allow the collection of up to five times larger fluorescent signals, while remaining compatible with the formation of complex response patterns and with fluidic functions. (c) 2006 American Institute of Physics.