Related by context. Frequent words. (Click for all words.) 61 excitons 61 exciton 60 excitations 59 electron density 59 crystal lattice 58 electron spins 58 oscillatory 57 active galactic nuclei 57 atomic nuclei 57 dopant 57 silicon atoms 57 Photons 57 alpha particles 57 isotropic 56 dye molecules 56 biomolecule 56 photons 56 dipoles 56 antiprotons 56 radiative 56 nuclei 56 electron 56 magnetization 56 osmium 55 anisotropy 55 dispersive 55 hydrogen ions 55 superfluid 55 electrons 55 ionize 55 reactants 55 photon 55 sinusoidal 55 laser pulse 55 quantized 54 photonic crystal 54 Bose Einstein condensate 54 bosons 54 quanta 54 Gamma rays 54 positron 54 ionised 54 hydrogen atom 54 accretion disk 54 electron spin 54 reactant 54 magnetic flux 54 phonons 54 X ray emission 54 interferometry 54 electron beams 54 Earth magnetosphere 54 nanoscopic 53 neutrons 53 magnetar 53 bilayer 53 porphyrin 53 Type Ia supernovae 53 amplitudes 53 dimer 53 QDs 53 gold nanorods 53 magnetic fields 53 chirality 53 singularities 53 atoms 53 keV 52 interfacial 52 dopants 52 transmembrane 52 ionized gas 52 magnetic reconnection 52 absorbance 52 crystallographic 52 hydrocarbon molecules 52 muon 52 laser pulses 52 dynamical 52 rubidium 52 frequency comb 52 subatomic 52 radioactive decay 52 galaxy formation 52 chromophores 52 muons 52 nucleation 51 supernovae 51 photometer 51 interstellar medium 51 hydrogen atoms 51 Ultraviolet light 51 vortices 51 starbursts 51 atomic nucleus 51 fermions 51 picoseconds 51 excitation 51 electrically conducting 51 neutrino 51 FRET 51 Hawking radiation