Microstructure and optical properties of Cu∕Al2O3 nanoarray composite structure

Abstract

Experimental and theoretical investigation on the high frequency dielectric properties of Ag/Al2O3 composites Appl. Phys. Lett. 99, 032903 (2011); 10.1063/1.3608156Structural and optical properties of Zn 0.9 Mn 0.1 O / ZnO core-shell nanowires designed by pulsed laser deposition nanoarray composite structure was obtained by alternating-current electrodeposition Cu into the pores of anodic alumina. The ordered wire-grid structure of Cu nanowires formed along a preferential direction, typically 20 nm in diameter, possesses a face-centered-cubic crystalline structure. Optical properties of Cu/ Al 2 O 3 were investigated in detail. An apparent resonance absorption peak near 560 nm was observed, and with the increasing amount of electrodeposition Cu, the blueshift of the peak and the redshift of the absorption band edge were observed. Experimental results also indicate that Cu nanowires have good transmittance characteristic in near-IR wave band and do not exhibit obvious absorption action in mid-IR wave band; in the range of 800-2000 nm, Cu/ Al 2 O 3 present a good polarization property, and with the increase of electrodeposition time, the polarization increases.