COMPLEX REFRACTIVE INDEX OF DILUTE SAMPLE OF POLYSTYRENE BEADS W/ DYE

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 我打算做的工作是一个模拟项目的一部分，在这个模拟项目中，我模拟了完整的麦克斯韦方程，以求出含有染料分子的直径为20 nm的聚苯乙烯微珠的近场。 使模拟更接近真实情况 我需要知道它的复折射率 染有染料的珠子。 该过程如下，首先测量 用Perkin Elmer UV-Vis吸收光谱仪测定消光系数。然后用已知的 浓度和粒度的值是可能的 将测量结果与复数折射率相关联。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The work I intend to do is a part of a simulation project where I simulate the full maxwell equations to find the near field of 20nm diameter polystyrene beads which has dye molecules in it. To keep the simulation close to the real situation I need to know the complex refractive index of the beads with the dye. The procedure is as follows,First measure the extinction coefficient with the Perkin Elmer UV-Vis absorption spectrometer. Then with the known values of concentration and particle size its possible to relate the measurement to the complex refractive index.