Scanning electron microscopy 13 Thin films 10 Electric conductivity 9 Electronic equipment 9 Substrates 9 Thermoelectric equipment 9 Field emission microscopes 8 Field emission scanning electron microscopy 8 Optical properties 8 Sol-gels 8 TJ Mechanical engineering and machinery 8 Zinc oxide 8 Titanium dioxide 7 Applications of electric power 6 Current-voltage measurements 6 Electrical conductivity 6 Sol-gel process 6 Electric apparatus and materials. Electric circuits. Electric networks 5 Electronics 5 Morphology 5 Sol-gel spin coating 5 Temperature 5 X ray diffraction 5 Annealing temperatures 4 Capacitance 4 Coatings 4 Dielectric materials 4 Efficiency 4 Electric discharges 4 Electrical characteristic 4