Copper hydroxide nanoneedle and nanotube arrays fabricated by anodization of copper.

Cu(OH)2 nanoneedle and nanotube arrays were electrochemically synthesized by anodization of a copper foil in an aqueous solution of KOH. The nanoneedles and nanotubes were constructed from nanosheets of Cu(OH)2. Controlling the electrochemical conditions can qualitatively modulate the lengths, amounts, and shapes of Cu(OH)2 nanostructures.

[Investigation of phase morphology of PS/PMMA blend thin film by surface enhanced raman scattering].

Polystyrene/poly (methyl methacrylate) (PS/PMMA) was studied after the thin films were prepared on glass substrate by spin-coating from THF. Raman spectroscopy combined with microscopy was used to obtain information on the morphology and structure of the thin films. From the relative intensities of the peaks around 1 604 and 1 585 cm(-1) due to stretching of benzene rings, and 1 728 cm(-1) due to stretching of C=O for PS and PMMA respectively, the authors could define the composition of the domains in the sea-island-like phase-separated structure in the microscopic image.