Related by context. Frequent words. (Click for all words.) 75 ultracapacitors 64 ultracapacitor 61 lithium ion batteries 61 solar cells 59 capacitor 57 electrochemical 57 Li ion 56 piezoelectric 56 lithium ion 56 spintronics 56 capacitors 56 carbon nanotubes 56 gallium arsenide 56 photovoltaics 56 Li ion battery 55 SiC 55 graphene 54 SOFC 54 MRAM 54 transistor 54 nanostructure 53 CNTs 53 nanostructures 53 nanometer scale 53 carbon nanotube 53 LEDs 53 nanoscale 53 lithium ion battery 53 batteries 53 nanomaterials 53 nanomaterial 52 diodes 52 quantum dots 52 superconductors 52 silicon chips 52 photovoltaic cells 52 nanowire 52 lithium batteries 52 capacitance 51 laser diodes 51 hybrid electric 51 nanowires 51 fiber lasers 51 silicon 51 silicon carbide 51 nanotube 51 nano scale 51 thermoelectric 51 chemistries 51 superconductor 51 thermal conductivity 50 Graphene 50 GaN 50 crystalline silicon 50 photovoltaic 50 transistors 50 diode 50 rechargeable 50 microfluidics 50 biosensors 50 quantum dot 50 Lithium ion batteries 50 dielectric 50 nanotubes 50 nickel metal hydride 50 substrates 49 GaAs 49 CMOS 49 PHEVs 49 rechargeable batteries 49 light emitting diodes LEDs 49 acid batteries 49 polymers 49 terahertz 49 hydrogen 49 inductor 49 carbon fibers 49 polymer 49 OLEDs 49 SiGe 49 photolithography 49 nano 49 optoelectronic 49 Nanotubes 48 metamaterials 48 quantum computers 48 metal oxide 48 lithium battery 48 germanium 48 OLED displays 48 superconducting 48 MOSFET 48 nanoparticles 48 PV panels 47 catalysis 47 planar 47 nanotechnology 47 Carbon nanotubes 47 MEMS 47 cathode 47 electrical conductivity