We investigated the origin of broad luminescence observed from an array of site-controlled InGaN nanodots grown by selective area epitaxy (SAE). Epitaxially grown site-controlled nanodots with lateral dimensions <50 nm and an array density of 10 cm 2 have been studied. During the nanoscale SAE, incorporation of adatoms from the SiO2 mask has greater relative importance, resulting in a non-unifo...

The dielectric behavior of insulations is a key factor affecting the development anti-corona materials for generators. Epoxy resin (EP), as matrix, blended with inorganic fillers micron SiC and nano SiO2 to investigate effect micro doping on conductivity breakdown mechanism composites. Using experimental simulation analysis, it found that nano-SiO2 concentration related dispersion particles. lo...

we report on the synthesis, morphology, chemically and structurally of tio2-cuo-sio2 nanostructure with different precursors molar ratio and calcined temperatures. in the present work, ternary reactive powders in the tio2-cuo-sio2 systems have been obtained using the sol-gel method, by the simultaneous gelation of all cations. the compounds and other elements change in special chemical and phys...

Nano Bioactive glass material of the type CaO–P2O5–SiO2 was obtained by the sol-gel processing method at considerably lower temperatures than required for conventional melting methods. As a new modification, volume of solution was changed in order to investigate its effects on the properties of bioglass samples. The obtained material was characterized by X-ray powder diffraction (XRD), surface ...

some issues; leakage, tunneling currents, boron diffusion are threatening sio2 to be used as a good gate dielectric for the future of the cmos (complementary metal- oxide- semiconductor) transistors. for finding an alternative and novel gate dielectric, the nio (nickel oxide) and pva (polyvinyl alcohol) nano powders were synthesized with the sol-gel method and their nano structural properties w...

In order to study the influence of nanomaterials on carbonation resistance marine concrete under bending loads, an appropriate amount nano-SiO2 was added plain concrete, and a self-developed box loading device were used conduct coupling test. Four different stress levels set measure depth nano-concrete at ages. Scanning electron microscopy (SEM) X-ray diffraction (XRD) analyze interfacial trans...