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领域: | 高分子材料 | ||
样品: | 含偶氮苯聚合物薄膜 | 项目: | 拉曼成像 |
方案文件名 | 下载 |
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刻蚀在高分子薄膜上的全息光栅的拉曼成像 |
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Raman image (Figure 1) from a thin film of azobenzene-containing polymer thin film (300 nm) that is periodically structured (periodicity of ~1 µm). Raman measurements were recorded with a Labram HR 800 (HORIBA JobinYvon) spectrometer combined with an inverted microscope (Olympus IX 71) and a X,Y Piezoelectric stage to position the sample with the best accuracy and repeatability. A 100X, 0.9 NA microscope objective was used. A Raman spectrum (Fig. 2) was recorded every 100 nm along the X and Y directions with an integration time of 5 seconds per spectrum (λ excitation=752.4 nm). The variation of the Raman signal was integrated over the [10601180]cm-1 spectral domain (Figure 3). It must pointed out that details on the Raman profile are obtained with a spatial resolution better than λ/2 (at the diffraction limit).