Control of Cross-Sections and Optical Nonlinearity of Pt Nanowires and the Roughness Effect. (9th April 2012)

• Record Type: Journal Article
• Authors: Ogata, Y.; Mizutani, G.
• Other Names: Gavrilenko Vladimir I. Academic Editor.
• Is Part Of: Physics research international. Volume 2012(2012)
• Publication Date: 2012-04-09
• Subjects: Physics -- Periodicals; Physics; Periodicals; Electronic journals; 530
• DOI: 10.1155/2012/969835
• Languages: English
• ISSNs: 2090-2220

Abstract

Abstract : In this paper we review our fabrication of Pt nanowire arrays on MgO(110) faceted templates by a shadow deposition method and our control of their cross-sectional shapes by adjusting the deposition directions of platinum. We obtained nanowire arrays with C s and C 2 v macroscopic symmetries. These macroscopic symmetries influence optical second harmonic generation (SHG) susceptibility elements of the nanowire arrays sensitively. On the other hand, the roughness of the nanowires had an effect on the rotational SHG patterns as a function of the sample rotation angle around the surface normal. We tried to explain the pattern change by a second-order perturbation scheme with respect to the roughness amplitude.