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利用可见激光诱导化学沉积方法在玻璃基底上制备纳米银薄膜和微结构。玻璃样品池中装满柠檬酸钠和硝酸银的混合透明溶液,当一束可见连续激光正入射样品池一段时间后,在辐照区域的玻璃内壁上便可以形成一层光亮的银膜。银膜沉积的速度受到激光功率密度、激光波长、辐照时间以及混合溶液的浓度等条件的影响。利用X射线衍射、原子力显微镜和拉曼光谱仪等手段对制备的薄膜的成分、表面形貌和拉曼活性等性质进行了表征和分析。利用此方法制备的银膜具有良好的表面增强拉曼散射活性。同时,利用双光束干涉的方法在玻璃基底上诱导出不同周期的银纳米颗粒光栅。
Preparation and fabrication of nanosilver thin films and microstructures on glass substrates by visible laser induced chemical deposition. The glass sample cell is filled with a mixture of sodium citrate and silver nitrate in a transparent solution. When a visible continuous laser is incident on the sample cell for a period of time, a bright silver film is formed on the inner wall of the glass in the irradiated area. The deposition rate of the silver film is affected by conditions such as the laser power density, the laser wavelength, the irradiation time, and the concentration of the mixed solution. The properties, such as composition, surface morphology and Raman activity of the prepared films were characterized and characterized by X-ray diffraction, atomic force microscopy and Raman spectroscopy. Silver films prepared by this method have good surface-enhanced Raman scattering activity. At the same time, the double-beam interference method is used to induce different periods of silver nanoparticle gratings on a glass substrate.