The detection means

The present invention provides a means for emitting light may be the object of detection. This apparatus includes a light source (102) and a waveguide (110). Said waveguide (110) comprising a core layer (112) and an upper coating layer (114). At least a nanowell (120) formed on at least the upper cladding layer (114). The present invention provides apparatus further includes a photodetector (106). This photodetector (106) capable of detecting light from a nanowell comprises at least a (120) single molecular target is emitted.