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(Click for frequent words.) 72 hydrogen atoms 71 oxygen atom 67 atoms 67 oxygen atoms 66 exciton 65 electron 65 antiparticle 64 electrons 63 carbon atom 63 hydrogens 63 neutrons 62 orbitals 62 atomic nuclei 62 hydrogen ions 62 antiproton 62 photons 62 ions 61 valence electrons 61 proton 61 chlorine atom 61 photon 61 excitons 60 baryon 60 superfluid 60 weakly interacting 60 silicon atoms 60 dye molecules 60 fermion 60 nitrogen atoms 60 bosons 59 quantum superposition 59 quantum particle 59 hydrogen nuclei 59 dipole moment 59 fermions 59 nitrogen atom 59 muon 59 W boson 59 molecule 59 neutrino 59 intermolecular 59 nuclei 59 sodium atoms 59 helium atoms 59 magnesium ions 58 deuterium atoms 58 bosonic 58 muons 58 sulfur atom 58 chromophore 58 oppositely charged 58 sulfur atoms 58 spherically symmetric 58 alpha particles 58 strange quark 58 quark 58 dimers 58 electron density 58 dimer 57 wavefunction 57 electron spins 57 positron 57 excitations 57 superposition 57 intramolecular 57 molecular orbitals 57 antiparticles 57 deuterium 57 antiprotons 57 electrons orbiting 57 baryons 57 electron pairs 57 helium nuclei 57 cesium atom 57 neutrinos 56 quasiparticle 56 antihydrogen 56 antineutrinos 56 reactants 56 silicon monoxide 56 reactant 56 zinc ions 56 angular momentum 56 porphyrin 56 rubidium atoms 56 anion 56 meson 56 antiferromagnetic 56 helium ions 56 kaons 56 bilayer 56 carbon atoms 56 electric dipole 56 molecules 56 electron neutrino 56 nucleons 55 strontium titanate 55 diatomic 55 alkane 55 massless particles 55 helium atom 55 hyperfine 55 alpha particle 55 covalent bond 55 polariton 55 electron neutrinos 55 magnons 55 Rydberg atom 55 metal ions 55 unpolarized 55 fermionic 55 optical lattice 55 biomolecule 55 anions 55 ultracold 55 histidine 55 B meson 55 mesons 55 protonated 55 protons 55 alkyl 55 diamagnetic 55 tau neutrinos 55 femtoseconds 55 uracil 55 shorter wavelengths 55 graviton 55 polaritons 55 X ray pulses 55 qubit 55 rubidium atom 55 manganese atoms 55 unpaired electrons 55 positrons 55 titania 55 γ 55 adenine 55 picosecond 55 strange quarks 55 hydroxyl 55 neutralinos 55 ferromagnet 55 magnetic flux 55 laser pulse 55 quasiparticles 54 antiparallel 54 kcal mol 54 refractive index 54 toroid 54 thymine 54 electron beams 54 quantum dot 54 atom 54 magnetization 54 angstroms 54 valence electron 54 electron positron pairs 54 chemically reactive 54 crystal lattice 54 quantum electrodynamics 54 UV photons 54 helices 54 isomeric 54 electrons protons 54 gravitational radiation 54 nucleon 54 chlorophylls 54 delocalized 54 chirality 54 conduction electrons 54 van der Waals forces 54 stoichiometry 54 amide 54 Bose Einstein condensate 54 nanoclusters 54 magnetar 54 trimers 54 absorbs photons 54 positronium 54 cuprates 54 crystallites 54 ceria 54 protoplanetary disk 54 gravitational attraction 53 phosphorus atom 53 adsorbed 53 oxygens 53 leptons 53 nucleobases 53 supersolid 53 lepton 53 disulfide bond 53 vibrational modes 53 titania nanotubes 53 guanine 53 disulfide bonds 53 adatoms 53 electron spin 53 magnetic dipole 53 atomic particles 53 atomic nucleus 53 superconducting 53 quantum particles 53 subatomic particle 53 phonon 53 catalytically active 53 antineutrino 53 chromophores 53 decoherence 53 superconductivity 53 adsorption 53 dispersive 53 Saturn magnetosphere 53 icosahedral 53 ionize 53 unpaired electron 53 photon energies 53 B mesons 53 electronic excitations 53 hydrophobic interactions 53 boson 53 electron volt 53 quanta 53 ultracold atoms 53 excitation 53 nebular 53 electrons emitted 53 phonons 53 cm -1 53 absorb neutrons 53 colloidal particles 53 metastable 53 hadrons 53 protostar 53 van der Waals 53 pions 53 Z boson 53 neutron star 53 Fermions 53 nanocrystals 53 muon neutrino 53 ferromagnetic 52 relativistic protons 52 nanorod 52 redshifts 52 GeV 52 aqueous solution 52 magnetic excitations 52 supercurrent 52 electron scattering 52 neutrino mass 52 electrostatic repulsion 52 catalytically 52 phosphorus atoms 52 HD #b [002] 52 W bosons 52 boron atoms 52 ionized 52 covalent bonds 52 hydrocarbon molecules 52 SWNTs 52 photosystem 52 antibody antigen 52 Raman scattering 52 organic molecules 52 quarks 52 emit photon 52 cesium atoms 52 electrostatic attraction 52 fluorescence resonance energy 52 carbene 52 superlens 52 antiquarks 52 ionise 52 X ray wavelengths 52 type Ia supernova 52 graphene layers 52 surface plasmon 52 lattice vibrations 52 tholins 52 magnetisation 52 circularly polarized light 52 ferromagnets 52 electron orbiting 52 tetramer 52 hexamers 52 infrared photons 52 spherical particles 52 photoelectrochemical 52 aldehyde 52 nanodot 52 photon absorption 52 alkynes 52 permittivity 52 fluorescence intensity 52 particles 52 redox reactions 52 bandgap 52 dipolar 52 enthalpy 52 optical resonator 52 quantum mechanical 52 hydrophobic molecules 52 Muons 52 osmium 52 donor acceptor 52 plasmon 52 alkyne 52 antihelium 4 52 ribozyme 52 chlorine atoms 52 asparagine 52 adsorbate 52 superposed 52 nanoprobe 52 calcium ions 52 nanomagnets 52 noble gases 52 Maxwell equations 52 fullerene 52 WIMPs 52 antimatter particles 52 gamma rays emitted 52 Fig. 2b 51 dihydrogen 51 macromolecule 51 actin filaments 51 electrostatic interactions 51 SN #A 51 Mott insulator 51 Bose Einstein condensates 51 accretion disk 51 epoxide 51 NH4 + 51 supersymmetric 51 terahertz radiation 51 fluorophores 51 pion 51 ionised 51 gravitationally 51 WASP #b 51 dopant atoms 51 radioactive decay 51 microwave photon 51 photoemission 51 alkali atoms 51 fluorescence spectra 51 subatomic particles 51 electron proton 51 β 51 resonant frequency 51 dopants 51 nanobubbles 51 CdSe 51 particle 51 germanium silicon 51 ultraviolet photons 51 antihydrogen atoms 51 hydroxide ions 51 surface plasmons 51 chiral molecules 51 RNA molecule 51 fluorine atom 51 η 51 electrons behave 51 superfluids 51 entangled quantum 51 graphene oxide 51 orbital angular momentum 51 branes 51 proton pump 51 Casimir cavity 51 alkene 51 photocatalysis 51 spacetime 51 tetramers 51 Z bosons 51 Bose Einstein Condensate 51 radiative 51 galactic disk 51 axions 51 dinitrogen 51 gluon 51 X ray binaries 51 optical wavelengths 51 DNA strands 51 Neutrinos 51 oxygen ions 51 barium titanate 51 planet orbits 51 conjugated polymer 51 ionized particles 51 quasicrystal 51 hydrides 51 photocurrent 51 spontaneous fission 51 filamentary 51 weak gravitational lensing 51 isotope ratios 51 neutralino 51 dopant 51 ferroelectricity 51 paramagnetic 51 electron tunneling 51 unreacted 51 glucose oxidase 51 tetrahedral 51 buckyball 51 brown dwarf 51 hemoglobin molecules 51 neutron stars 51 fluorescent dye molecules 51 proton proton 51 dipoles 51 millisecond pulsar 51 tetrahedra 51 graphite oxide 51 gravitons 51 cadmium selenide 51 analyte 51 hydrino 51 Hydrogen atoms 51 entangled photons 50 isotropic 50 beryllium ion 50 spheroidal 50 photoionization 50 methyl groups 50 nonmagnetic 50 Gamma rays 50 dimensional electron 50 HD#b 50 baryonic 50 vibrational 50 gamma ray emission 50 protons neutrons 50 cometary material 50 hydrogen deuterium 50 radiative recombination 50 plasmons 50 DNA helix 50 alkanes 50 valence band 50 magnetic fields 50 diffraction pattern 50 antimatter 50 cm -3 50 nanodots 50 hydroxyl radicals 50 conjugated polymers 50 spherical nanoparticles 50 lipid membranes 50 solar nebula 50 intermolecular forces 50 cyclization 50 relativistic particles 50 electron pairing 50 pseudogap 50 resonance frequency 50 thiols 50 SUSY 50 vibrational frequency 50 nanocrystal 50 magnetic monopoles 50 superconductor 50 conductivity 50 attoseconds 50 quinone 50 subatomic 50 alanine 50 piconewtons 50 quantum mechanically 50 Hawking radiation 50 alkali metal 50 evanescent waves 50 antiquark 50 multiferroic 50 QDs 50 photon fluorescence 50 fluorescent molecules 50 filaments 50 crustal rocks 50 x ray scattering 50 macroscale 50 excitation energies 50 hexagonal lattice 50 cuprate 50 microwave photons 50 AGNs 50 electrons positrons 50 porphyrins 50 crystal lattices 50 palladium nanoparticles 50 lithium atoms 50 dwarf galaxy 50 hydroxide 50 theoretical particle 50 electrophilic 50 hydrophobicity 50 micrometer sized particles 50 MWCNT 50 blazars 50 emit X rays 50 ionizes 50 solvation 50 inhomogeneous 50 CMB photons 50 interparticle 50 superpositions 50 diffusible 50 isomers 50 momenta 50 prokaryote 50 stoichiometric 50 silicate dust 50 photosystem II 50 semiconducting 50 spectra 50 interstellar clouds 50 brown dwarfs 50 graphane 50 exoplanetary 50 meV 50 silicates 50 active galactic nuclei 50 cadherins 50 quark gluon plasma 50 nanopillars 50 macrocycle 50 muon neutrinos 50 cobalt atom 50 macroscopic objects 50 antiferromagnets 50 amino acids 50 sister chromatids 50 quantum dots 50 semiconducting material 50 nanometers thick 50 solitons 50 gravitational wave 50 cesium ions 50 SWCNT 50 entangled qubits 50 5' triphosphate 50 gamma ray photons 50 rotaxanes 50 lanthanum strontium 50 FRET 50 spectroscopy 50 GRBs 50 gravitational interactions 50 single walled nanotubes 50 nanopore 50 vibrationally excited 50 myoglobin 50 X ray diffraction pattern 50 concentration gradient 50 Wolf Rayet star 50 conventional superconductors 50 electron electron 49 nucleation 49 radial velocity method 49 Photons 49 photon beam 49 NADH 49 crosslinks 49 azide 49 cobalt ions 49 diene 49 visible wavelengths 49 photochemistry 49 nanosecond pulses 49 Epsilon Eridani 49 diffract 49 monolayer 49 hydride 49 θ 49 hydroxyl radical 49 Pauli exclusion 49 absorption spectroscopy 49 SWNT 49 quantum tunneling 49 Fig. 4B 49 m z 49 GJ #b [001] 49 GPa 49 nucleotide 49 nanoscopic 49 water vapor 49 intercalation 49 photosphere 49 emits photon 49 ULIRGs 49 gold nanoclusters 49 TrES 49 electrochemical 49 carbonyl 49 AB Aurigae 49 formate 49 gravitational 49 Carbon dioxide CO2 49 extrasolar 49 Rydberg atoms 49 σ 49 ATP hydrolysis 49 starburst galaxies 49 SN #E 49 nanometric 49 helical structures 49 Higgs bosons 49 rubidium vapor 49 Planck constant 49 triphosphate 49 NWs 49 organometallic 49 interconversion 49 graphene sheet 49 actin binding 49 C#H# 49 GJ#b 49 biomolecules 49 ARPES 49 quasar 49 GJ #b [002] 49 laser excitation 49 nucleophilic 49 unicellular 49 electronvolts 49 cosmic ray 49 thymidine 49 rotaxane 49 planetesimals 49 Heisenberg uncertainty principle 49 pyrimidine 49 vortices 49 helium nucleus 49 deuterated 49 SiO 49 interfacial 49 quantum bits 49 conductance 49 membrane pores 49 beryllium ions 49 absorbance 49 interstellar medium 49 hydrolysis 49 photolysis 49 semiconductor nanocrystals 49 bistable 49 nitride layer 49 orbital resonance 49 nonpolar 49 quantized 49 chondrites 49 racemic mixture 49 alkenes 49 multipartite entanglement 49 laser pulses 49 high temperature superconductors 49 riboswitch 49 ultraviolet wavelengths 49 polycrystalline 49 quantum coherence 49 excitonic 49 nanometer scale 49 hydrogenase 49 nanotubes 49 Type Ia supernova 49 microcavity 49 optical lattices 49 PIP3 49 cytochrome 49 asthenosphere 49 gravitational interaction 49 potassium atoms 49 adduct 49 Josephson junction 49 macroscopic 49 positronium atoms 49 galaxy clusters 49 phosphonate 49 desorbed 49 MWNT 49 acetyl CoA 49 pentacene molecule 49 RNA strands 49 fermionic atoms 49 phytochrome 49 micron sized 49 HAT P 49 femtosecond laser pulse 49 graphene 49 superconductive 49 elongated orbits 49 microfluidic channels 49 quantum entanglement 49 terrestrial planets 49 ionized oxygen 49 chloride ions 49 Dirac equation 49 attosecond 49 relativistic speeds 49 electron doped 49 infrared laser pulses 49 Gravitational waves 49 divalent 49 carbonate minerals 49 bilayer graphene 49 Fig. 1A 49 tetragonal 48 electromagnetic induction 48 spicule 48 gamma rays 48 silicate minerals 48 photocatalysts 48 frequency comb 48 layer graphene 48 melittin 48 ionic liquid 48 metallic nanotubes 48 thermal decomposition 48 photonic bandgap 48 resonator 48 millimeter wavelength 48 Bose Einstein condensation 48 crystalline structure 48 Virgo cluster 48 nucleosynthesis 48 serine 48 martensite 48 krypton atoms 48 interferometry 48 shear modulus 48 subunits 48 mesoscopic 48 GAPDH 48 ribonuclease 48 ultracold gas 48 birefringence 48 Fig. 3b 48 electron diffraction 48 blue supergiant 48 Neutrons 48 biominerals 48 magnon 48 transfer FRET 48 deuterium atom 48 fission yeast 48 magnetic vortices 48 cadherin 48 amino acid 48 mesoporous 48 anionic 48 gravitational acceleration 48 pn junction 48 Bullet Cluster 48 graphene flakes 48 endosymbiosis 48 thiol 48 ε 48 quasicrystals 48 planetary magnetospheres 48 spin excitations 48 gravitationally bound 48 photomultiplier tubes 48 ionizing 48 fluorescent probes 48 X ray emission 48 diffraction grating 48 ultracold molecules 48 absorption spectra 48 Upsilon Andromedae 48 GZK cutoff 48 cobalt atoms 48 self assembled monolayers 48 homochirality 48 quantum metrology 48 nanosized 48 Brownian motion 48 photons emitted 48 maser 48 inorganic ions 48 endonuclease 48 fibril 48 qubits 48 gravitational redshift 48 supersymmetry 48 particles WIMPs 48 microRNA molecule 48 spectroscopic technique 48 yttrium barium copper 48 vanadium dioxide 48 borane 48 carbon cenospheres 48 superheavy element 48 cysteine residue 48 superfluidity 48 supernovae 48 Rayleigh scattering 48 galactic cosmic rays 48 high redshift galaxies 48 self assembled monolayer 48 eclipsing binary 48 organometallic compounds 48 hadron 48 decays 48 microstructures 48 Einstein equations 48 dephosphorylation 48 antihelium 48 micrometer scale 48 merging galaxies 48 chlorophyll molecule 48 micelle 48 absorbs photon 48 photoactivation 48 disulfide 48 plasmonic 48 energetic gamma rays 48 ionized gas 48 photons particles 48 cell cytoplasm 48 photonic crystal 48 carbons 48 walled carbon nanotube 48 Supplementary Fig 48 photon beams 48 linearly polarized light 48 circular dichroism 48 Feshbach resonance 48 z = 48 D meson 48 SWCNTs 48 millivolts 48 nanodevice 48 linearly polarized 48 elliptical galaxy 48 diffusive 48 zinc sulfide 48 Earth magnetosphere 48 perovskite 48 liquid electrolyte 48 phospholipid 48 ω 48 proton neutron 48 interstellar dust clouds 48 infrared laser beam 48 magnetic dipoles 48 topological defects 48 absorption coefficient 48 femtosecond 48 Josephson junctions 48 remanent 48 soluble proteins 48 superlattices 48 Henize #-# 48 extracellular domain 48 conformations 48 polystyrene spheres 48 fibrils 48 ferromagnetism 48 nanotube 48 RecA 48 chondrules 48 magnetosphere 48 cosmic ray particles 48 supermassive black hole 48 planet orbiting 48 oppositely directed 48 interstellar dust 48 anthracene 48 nucleobase 48 infinities 48 surfactant molecules 48 ions atoms 48 calmodulin 48 cytochrome c 48 fullerenes 48 infall 48 gravitational lens 48 carboxylate 48 exoplanet 48 PbS 48 Phys. Rev. Lett 48 micelles 48 graphene sheets 48 SiO 2 48 californium 48 crystallinity 48 magnetic coupling 48 magnetospheric 48 collisional 48 streptavidin 48 stimulated emission 48 Schrödinger cat 48 oxidants 48 titanium oxide 48 heavy fermion 48 Governmentium 48 aerosol particles 48 lipid bilayer 48 rubidium 48 Dauphas 48 van der Waals interactions 48 superlattice 48 diffraction patterns 48 oxidant 48 tensor 48 #BP# 48 silicon waveguide 48 nanometer sized 48 methanogenesis 48 resonance frequencies 48 circumstellar 48 electrochemical reactions 48 THz radiation 48 electron orbitals 48 peroxidase 48 isomerization 48 bilayers 48 colocalization 47 lipophilic 47 adsorb 47 photochemically 47 rotational axis 47 lensing galaxy 47 platinum Pt 47 monolayers 47 exosphere 47 ferromagnetic materials 47 μm thick 47 atomic orbitals 47 steric 47 actin filament 47 bandgaps 47 diffracted 47 absorbs ultraviolet 47 hydrogen 47 deuterium hydrogen 47 meteoritic material 47 superconducting electrons 47 superstrings 47 κ 47 ciliated 47 pigment particles 47 Red Rectangle 47 silica nanoparticles 47 Seebeck effect 47 polypeptide chain 47 Cassini ion 47 cycloaddition 47 Coulomb blockade 47 micrometre 47 blazar 47 ring resonators 47 biological molecules 47 isotopic ratios 47 fig. S1 47 micrometer sized 47 particle acceleration 47 diffraction limit 47 gate electrode 47 Nernst 47 semiconducting materials 47 gamma ray burst 47 poly L lysine 47 X ray photons 47 Entangled photons 47 colloidal crystals 47 strontium atoms 47 magnetic reconnection 47 fluorescence spectroscopy 47 nanospheres 47 agarose gel 47 translocates 47 emits photons 47 hydrophobic surfaces 47 galactic clusters 47 reprogramming genes 47 lithosphere 47 nanodroplets 47 membered rings 47 lipid molecules 47 Magnetic reconnection 47 monomers 47 catalytic reactions 47 fluorophore 47 kinesin 47 radial velocity 47 lipid membrane 47 oxidizing agent 47 magnetotail 47 solar neutrinos 47 DZero 47 C# fullerenes 47 high temperature superconductivity 47 Fig. 4a 47 bucky balls 47 accretion disks