本論文分為兩部份，第一部份主要在不同類型之界面活性劑水溶液中，以UV光照射還原四氯金酸製備金奈米粒子，藉由UV/VIS吸收光譜、XRD及TEM等分析，探討所得粒子的性質。由UV光譜及TEM分析得知，不同類型之界面活性劑，將會對金奈米粒子的製備造成影響。其中陽離子型界面活性劑CTAB，因與金離子形成錯合物之速率大於UV光還原其成為金奈米粒子的速率，故不易製得金奈米粒子。陰離子型與非離子型界面活性劑可製得奈米金粒子,但所得金奈米粒子之粒徑仍隨界面活性劑濃度與照光時間及方式的改變而不同。
第二部份主要在乙二醇溶液中，以聯胺為還原劑，於高分子微球表面被覆鎳奈米薄層，製備核殼型複合奈米粒子。結果顯示，在適當的溫度及鎳鹽與還原劑濃度下，可成功在高分子微球表面被覆均勻且連續的鎳奈米薄層，其厚度約1.2nm。經過清洗與多重被覆，可增加鎳奈米薄層的厚度。當鎳奈米薄層的厚度增至約20nm時，複合粒子的導電性即與塊材的鎳接近。

This thesis includes two parts. First, the preparation of Au nanoparticles via the UV-radiation reduction of HAuCl4 in the aqueous solutions containing different types of surfactants was studied. The resultant Au nanoparticles were characterized by UV/VIS absorption spectrophotometer, XRD, and TEM. It was found that the type of surfactant played an important role in the formation of Au nanoparticles. If cationic surfactant CTAB was used, Au nanoparticles were not formed because of the stronger complexation of Au and CTAB ions. When anionic or nonionic surfactants were used, Au nanoparticles could be formed and their sizes varied with changing the surfactant concentration or the irradiation time and method.
Secondly, the fabrication of continuous Ni nanoshells on polymer microspheres via the hydrazine reduction of nickel ions in ethylene glycol. It was found that homogeneous and continuous Ni nanoshells could be successfully coated on the surface of polymer microspheres under appropriate reaction temperature and the concentrations of nickel salt and hydrazine. The average thickness of Ni nanoshells was about 1.2 nm. After washing, the thickness of Ni nanoshells could be increased by multiple coating. When the thickness of Ni nanoshells increased up to about 20 nm, the conductivity of Ni-coated polymer microspheres was close to that of bulk Ni.

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