Related by context. Frequent words. (Click for all words.) 63 fluorescent dye 61 fluorescent dyes 60 quantum dots 60 ultraviolet light 59 fluorescence 58 fluorescent proteins 57 UV light 56 phosphors 56 nanocrystals 56 functionalized 56 oxidize 56 laser pulse 55 quantum dot 55 nanorods 55 fluorescent protein 54 photoreceptors 54 photonic crystals 54 luciferase 54 molecules 54 electrons 54 iridescence 54 ultra violet light 54 nanoparticles 53 chloroplasts 53 luminescence 53 fluorescent 53 wavelengths 53 nanospheres 53 nuclei 52 retinal cells 52 adsorbed 52 FRET 52 photoreceptor 52 photosensitive 52 nanotubes 51 nano particles 51 nanocrystal 51 oxidizes 51 atoms 51 molecule 51 iron oxides 51 oxygen atoms 51 reversibly 51 phosphor 51 laser pulses 50 nanostructure 50 bioluminescent 50 nanowires 50 diseased cells 50 melanosomes 50 titanium oxide 50 semiconducting 50 nanodiamonds 50 micelles 50 magnetic nanoparticles 49 microstructures 49 Fluorescent 49 infrared wavelengths 49 retina 49 nanodevices 49 pigment 49 photons 49 nanostructures 49 molecularly 49 nanotube 49 organelles 49 bioluminescence 49 neurones 49 cell membranes 49 chlorophyll 49 light emitting 48 nanoscopic 48 micron sized 48 particles 48 substrate 48 exosomes 48 tumor cells 48 Fluorescence 48 calcium ions 48 speckles 48 pigments 48 crystals 48 cell membrane 48 diseased tissue 48 neutrons 48 magnetic fields 48 cells 48 ions 48 fullerenes 48 supernova explosions 48 dentin 48 silicates 48 luminescent 48 microcapsules 48 reactants 48 fibrils 47 nanoparticle 47 hydrogen atoms 47 pigmented 47 electron 47 proteins