290 and 340 nm UV LED arrays for fluorescence detection from single airborne particles

摘要: We demonstrate a compact system, incorporating 32-element linear array of ultraviolet (290 nm and 340 nm) light-emitting diodes (LEDs) multi-anode photomultiplier tube, to the in-flight fluorescence detection aerosolized particles, here containing biological molecules tryptophan NADH. This system illustrates substantial advances in growth fabrication new semiconductor UV light emitting devices an evolution packaging details for LEDs tailored bio-aerosol warning problem. Optical engineering strategies are employed which take advantage size versatility develop truly detector.