有机硅微球的折射率测定
Refractometry of organosilica microspheres
摘要：
采用两种方法测定了新型有机硅（纳米/微米）材料的折射率。第一种方法是基于对有机硅珠的消光效率与波长的分析，这是通过标准的实验室光谱仪获得的。第二种方法依赖于这些珠子在聚焦光束中的可测量的捕获潜力（激光镊子）。用聚苯乙烯微珠对这些方法进行了验证，所测得的折射率值的色散曲线是准确的。有机硅珠的折射率已被确定为在300-1100 nm的波长范围内为1.60-1.51。
英文摘要：
The refractive index of novel organosilica (nano/micro)material is determined using two methods. The first method is based on analysis of optical extinction efficiency of organosilica beads versus wavelength, which is obtained by a standard laboratory spectrometer. The second method relies on the measurable trapping potential of these beads in the focused light beam (laser tweezers). Polystyrene beads were used to test these methods, and the determined dispersion curves of refractive index values have been found accurate. The refractive index of organosilica beads has been determined to range from 1.60-1.51 over the wavelength range of 300-1100 nm.
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