X ray diffraction 138 Scanning electron microscopy 57 Fourier transform infrared spectroscopy 50 Article 38 chemistry 34 Technology: general issues 32 X- ray diffractions 29 controlled study 29 X-ray diffraction 28 X ray diffraction analysis 26 History of engineering and technology 24 scanning electron microscopy 23 X-Ray Diffraction 22 Research & information: general 21 Nanoparticles 18 nonhuman 17 Zinc oxide 16 particle size 16 Field emission microscopes 15 Adsorption 14 unclassified drug 14 High resolution transmission electron microscopy 13 human 13 Chemistry 12 Field emission scanning electron microscopy 12 Morphology 12 crystal structure 12 differential scanning calorimetry 12 Crystallite size 11 Humans 11