A simple route involving the reaction between zinc powder and water under controlled pH and temperature was used to prepare ZnO nanorods (see Panchakarla et al.). Zinc oxide nanoparticles were prepared also using solÀgel method starting from zinc acetate precursor (as per Zang et al.). Thin¯lms were prepare from both nanorods and nanoparticles by electrophoretic deposition (EPD) in aqueous media (see Dogan et al., Wang et al., Lommens et al., Tang et al. and Besra et al.).To have a uniform microstructure in the deposited¯lms, the aqueous suspension was stabilized using an anionic surfactant. The e®ect of voltage and pH on the rate of electrophoretic deposition from nano zinc oxide colloid was studied in detail. Scanning electron microscopy (SEM), X-ray di®raction (XRD), Atomic force microscopy (AFM) and UV-Vis Spectroscopy were used to characterize ZnO thin¯lms after sintering.

No abstract

Nanoporous alumina template was fabricated in dilute oxalic acid solution using a two step anodization process at voltage range of ~34 V. This was used as a template to form nanopillar matrices of copper by metal evaporation and direct deposition. Heat treatment of the copper nanopillars resulted in copper oxide ordered nanostructures which were characterized using electron microscopy. When these nanostructures were used as an electrochemical sensor for quantitative analysis of glucose in aqueous solutions, the electrodes modified with nanopillars showed a high degree of sensitivity compared to flat electrodes.

No abstract

No abstract