Related by context. Frequent words. (Click for all words.) 58 atomic nuclei 56 excitons 56 atoms 54 alpha particles 53 electron beams 53 hydrogen atoms 53 reactants 53 atomic nucleus 52 photons 52 neutrons 52 nuclei 52 electrons 52 electron 51 neutron 51 laser pulse 51 picoseconds 51 hydrogen 51 nanocrystal 51 subatomic particles 50 photon 50 positrons 50 particle beams 50 chemical reactions 50 proton 49 oxygen atoms 49 Photons 49 protons 49 hafnium 49 GeV 49 electrochemical 49 ions 49 fermions 49 calcium ions 48 radioactive decay 48 deuterium 48 femtoseconds 48 muons 48 superheated steam 48 superconductivity 48 oxygen atom 48 quantum entanglement 47 picosecond 47 crystal lattice 47 subatomic 47 phonons 47 atomic particles 47 photonic crystal 47 hydrogen ions 47 subatomic particle 47 supernova explosions 47 electron volts 47 biological molecules 47 Bose Einstein condensate 46 high temperature superconductivity 46 hydrogen atom 46 electromagnetism 46 ionizing 46 magnetic flux 46 neutrinos 46 nanoscopic 46 magnetar 46 ionization 46 quark gluon plasma 46 cosmic rays 46 nanostructures 46 quanta 46 neutrino 46 gamma rays 46 supernova explosion 46 nanometer sized 46 molecules 46 plasmonic 46 resonators 46 atom 46 high temperature superconductors 45 quantum dot 45 ferromagnetic 45 muon 45 crystals 45 quantum mechanical 45 thermoelectric materials 45 isomers 45 ionized gas 45 nanocrystals 45 fission 45 fusion 45 rubidium 45 nanoscale 45 nanospheres 45 microchannels 45 nanotubes 45 antimatter 45 Eta Carinae 45 neutron stars 45 laser pulses 45 particle collisions 44 superfluid 44 positron 44 optical tweezers 44 carbon atom 44 magnetic fields