We report on the chemical synthesis of the arrays of silicon oxide nanodots and their self-organization on the surface via physical processes triggered by surface charges. The method based on chemically active oxygen plasma leads to the rearrangement of nanostructures and eventually to the formation of groups of nanodots. This behavior is explained in terms of the effect of electric field on th...

Semiconducting precipitates of βFeSi2 have been successfully fabricated in silicon by high dose Fe+ implantation (typically 1.5 x 1016 Fe cm-2 at 200keV). Room temperature electro luminescence (EL) at 1.5μm has been observed from light emitting diodes (LED’s) incorporating this type of structure. This study is to evaluate how the microstructure and optical properties are affected by the implant...

The fluorescent dye Alexa Fluor 488 or the anticancer drug doxorubicin is attached to the surface and inner pore walls of mesoporous Si particles by covalent attachment, and the oxidation-induced release of each molecule is studied. The molecules are bound to the Si matrix using a 10-undecenoic acid linker, which is attached by thermal hydrosilylation. Loading capacity of the microparticles usi...

We have systematically investigated the effects of all possible combinations vacancies and silicon substitutions on electronic structure ? ? phases Ga2O3 using plane-wave density functional theory (DFT) methods. It was found that VGa defects are associated with a sufficient shift Fermi level to lower energy induce p-type behavior, formation energies in range 9.0 ± 0.2 eV. Calculations single at...

In this paper, we construct a new model based on the coupling of thermoelasticity, plasma, and microelongation effect under volumetric absorption laser pulse. Three different thermoelasticity theories are applied to in 2D thermoelastic semiconducting medium whose properties temperature-dependent. The surface is exposed radiation having spatial temporal Gaussian distributions; addition, consider...

We demonstrate in-situ Raman measurements of individual silicon nanowires (100 nm diameter, 10-20 m in length) which are trapped using optoelectronic tweezers (OET). OCIS codes: (300.0300) Spectroscopy, Raman; (140.7010) Trapping. Optoelectronic tweezers (OET) is a dynamic, non-invasive optical manipulation tool that works based on the principle of light-induced dielectrophoretic force. It is c...

A great deal of interest in two-dimensional materials analogues of graphene has appeared among the scientific community since the demonstration of isolated 2D atomic plane crystals from bulk crystals [1]. Dimensionality is key for the definition of material properties and the same chemical compound can exhibit dramatically different properties depending on whether it is arranged in dots (0D), w...