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摘要
The IR spectra of a single, isolated polystyrene sphere with diameter of 4.46 mu m under different aperture sizes have been measured by Micro-FTIR spectrometer and the scattering signal can be seen obviously. Based on Mie scattering theory, a feasible method has been proposed to estimate the extinction efficiency (Q(ext)) of micro-sphere. Q(ext) from Mid-IR spectroscopy is consistent well with that derived from MiePlot software. It shows that the extinction efficiency of microsphere with the size of the Mid-IR range (2.5 mu m -25 mu m), which exhibits weak IR absorption, can be obtained by using the present method based on recorded Micro-FTIR spectra.
- 出版日期2017-6-15
- 单位北京理工大学
