Related by context. Frequent words. (Click for all words.) 72 photons 66 Electrons 64 photon 64 electrons 60 atoms 59 photonic crystals 58 laser pulses 58 ions 58 atomic nuclei 57 laser pulse 57 waveguides 57 neutrons 57 Particles 56 Transistors 56 magnetic fields 56 electron 55 nanocrystals 55 neutrinos 55 Electron 55 nuclei 55 quantum dots 54 Molecules 54 cosmic rays 54 wavelengths 54 particles 54 electromagnetic waves 54 protons 54 Nanotubes 54 gamma rays 53 Neurons 53 molecules 53 resonators 53 hydrogen atoms 53 Nanoparticles 52 vibrational 52 diffraction 52 positrons 52 subatomic particles 52 infrared radiation 52 atomic particles 52 nanorods 52 magnetization 51 qubit 51 gravitational waves 51 neutrino 51 cosmic ray 51 electron spin 51 wavelength 51 nanoscale 50 resonant frequency 50 quantum dot 50 superconductors 50 semiconducting 50 qubits 50 laser beams 50 biomolecules 50 nanotubes 50 spacetime 50 ionizing 50 gravitationally 50 waveguide 50 subatomic 50 metamaterial 50 Nanoscale 50 electromagnetic radiation 50 droplets 50 metamaterials 49 nanocrystal 49 hydrogen atom 49 reactants 49 oxygen atoms 49 particle 49 quantum mechanical 49 optical fibers 49 photonic 49 electrical currents 49 relativistic 49 organic molecules 49 vortices 49 electromagnetism 49 Solar Cells 49 calcium ions 49 superposition 49 magnetosphere 49 high temperature superconductors 49 nano particles 48 nanometer scale 48 terahertz 48 Particle 48 distant galaxies 48 ferromagnetic 48 photodiode 48 crystals 48 excitation 48 interstellar medium 48 fluoresce 48 interferometry 48 electron mobility 48 ionosphere 48 galaxy clusters 48 quantum computers