Hydrogen activated axial inter-conversion in SiC nanowires

A facile low pressure annealing route using NH₃ as a hydrogen source for the structural and chemical modification of SiC nanowires (SiCNWs) is presented. The developed route transforms SiCNWs into tubular SiC nanostructures while coaxial SiO₂/SiCNWs reverse their sheath/core structure. Our findings suggest a decomposition process induced via the preferential substitution of silicon by hydrogen and via the difference in diffusion rates of available atomic species, which leads to axial structural rearrangement. In addition to these effects, the procedure improves the crystallinity of the samples. The process could be exploited as a viable route to manipulate a variety of nanostructures and films for doping and etching and structural manipulation.     

Sensitivity analysis of entropy production in Al2O3/H2O nanofluid through converging pipe

Journal of Thermal Analysis and Calorimetry - This work numerically investigated entropy production rate in Al2O3/H2O nanofluid flowing through a convergent pipe in laminar flow regime using...     

Numerical investigation of entropy production in SWCNT/H2O nanofluid flowing through inwardly corrugated tube in turbulent flow regime

Journal of Thermal Analysis and Calorimetry - This work numerically investigates the entropy production rate in single-walled carbon nanotubes (SWCNTs)/H2O nanofluid flowing through an inwardly...