本文主要探討一維金－氧化鎵豆莢結構奈米線與核殼結構奈米線之特殊的遠場光學性質。單晶型態一維金－氧化鎵複合結構奈米線被系統性地製造，本文進一步研究多種金－氧化鎵複合結構奈米線的光散射與光干涉特性，以及光激發螢光性質。金－氧化鎵奈米線的光散射光譜上的主要波峰，推測是由奈米線內部金奈米結構產生電漿子震盪所造成。光干涉光譜展示了利用金－氧化鎵豆莢結構奈米線作為奈米光學共振腔的應用。金－氧化鎵奈米線的光激發螢光光譜顯示單晶態氧化鎵的激光可進一步激發奈米線內部的金奈米結構產生電漿子共振現象。

This work aims to explore and study a wide range of peculiar far-fi eld optical properties of one-dimensional goldin-Ga2O3 peapod and gold-in-Ga2O3 core-shell nanowires. Single-crystalline gold-in-Ga2O3 nanowires have been synthesized systematically by vapor-liquid-solid method. Light-scattering properties and light-interference phenomena of individual gold-in-Ga2O3 nanowires were investigated by dark-field optical microscopy (OM). Light-emission properties of gold-in-Ga2O3 nanowires were studied by photoluminescence (PL). The major peaks in measured scattering spectra were suggested to result from plasmonic resonance of the gold nanopeas and nanorods embedded in the Ga2O3 nanowires. Light-interference spectra of single gold-in-Ga2O3 peapod nanowires demonstrated their applicability of being plasmonic nano-resonators. Photoluminescence of gold-in-Ga2O3 nanowires indicated that luminescence of Ga2O3 matrix further excites localized plasmon resonance in inner gold nanostructures.