Development of green nanotechnology is generating interest of researchers toward ecofriendly biosynthesis of nanoparticles. Biomolecules present in plant extracts can be used to reduce metal ions to nanoparticles in a single-step green synthesis process. This biogenic reduction of metal ion to base metal is quite rapid, readily conducted at room temperature and pressure, and easily scaled up. In this study, biosynthesis of stable copper nanoparticles were done using datura

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Environmental Chemistry  Green Chemistry  Nanometer Materials  Biological Chemistry  Analytical Chemistry 

Doi:10.4236/oalib.preprints.1200067

Porous silicon layers were fabricated on p-type crystalline silicon wafers using electrochemical etching ECE process. An investigation of the dependence on applied current density to formed PS layer was made. Porosity of the porous silicon layer and thickness were determined gravimetrically. Increasing the etching current density led to increase the surface porosity and thickness.The porosity varies between 44and 77% for current densities between 25 and 85mA/2.The current density-voltage charact...

Nanometer Materials  Material Experiment  Fundamentals of Material Science 

Doi:10.4236/oalib.preprints.1200044