Related by context. Frequent words. (Click for all words.) 71 X ray beams 71 X ray beam 65 laser pulses 62 laser pulse 61 shorter wavelengths 60 electron beams 59 visible wavelengths 59 synchrotron radiation 58 photonic crystal 58 X ray emission 58 wavelengths 58 dye molecules 57 nm wavelength 57 fluorescence 57 ultraviolet UV light 57 spectrometry 57 fluorescent dyes 56 ultrasonic waves 56 microbubbles 56 SWNTs 56 ultraviolet light 56 microwave radiation 56 lasers 56 ion beam 56 Quantum dots 56 terahertz radiation 56 confocal microscopy 55 laser beams 55 MeV 55 photodetector 55 magnetic fields 55 Photons 55 fluorescent proteins 55 optical microscopy 55 excitation 55 femtosecond laser 55 frequency comb 55 dopant 55 magnetic pulses 55 X ray fluorescence 55 Ultraviolet light 55 electron density 55 photodiodes 54 analyte 54 ionised 54 ionize 54 phosphors 54 diffraction 54 particle beams 54 nanospheres 54 ionisation 54 isotropic 54 photons 54 photometric 54 photonic crystals 54 Gamma ray bursts 53 QDs 53 microstructures 53 photodetectors 53 dispersive 53 nanocrystal 53 dopants 53 solar corona 53 interferometry 53 Fluorescence 53 irradiance 53 nanocrystals 53 zeolites 53 fluorescent dye 53 magnifications 53 infrared rays 53 infrared wavelengths 53 active galactic nuclei 52 laser beam 52 fluoresce 52 spectroscopy 52 UVB radiation 52 light emitting diodes LEDs 52 alpha particles 52 spectroscopic 52 UV light 52 infrared radiation 52 μm 52 nanorods 52 particle sizes 52 microelectrodes 52 femtosecond 52 antiprotons 52 shorter wavelength 52 ionized gas 52 nuclei 52 microwave frequencies 52 diffractive 52 gamma rays 52 optical telescopes 52 neutrons 52 laser ablation 52 magnetic nanoparticles 52 confocal 52 amplitudes 52 microchannels