Attenuated total reflection Fourier transform infrared imaging with variable angles of incidence: A three-dimensional profiling of heterogeneous materials
Attenuated total reflection Fourier transform infrared imaging with variable angles of incidence: A three-dimensional profiling of heterogeneous materials
复制标题
DOI：
10.1366/000370207779701415
复制
发表时间：
2007-01-01
影响因子：
3.5
通讯作者：
Kazarian, Sergei G.
中科院分区：
文献类型：
--
作者：
Chan, K. L. Andrew;Kazarian, Sergei G.
在傅里叶变换红外(FT-IR)光谱成像中，使用了一种单反射变角衰减全反射(ATR)附件进行了深度剖析。通过ATR晶体获取不同入射角的ATR-FT-IR图像，可以获得样品的三维化学信息。讨论了在不同入射角度下获得的图像质量和视场。以双层聚合物薄膜为例，说明了该方法的原理。这种方法是获得非均质材料深度剖面的一种很有前途的工具。测量深度的范围是有限的，大约在0.3到4微米之间，但z方向的空间分辨率不受衍射的限制。这种方法的发展为以高深度分辨率研究包括生物组织(如头发和皮肤)在内的薄膜的空间异质性提供了可能。
Depth profiling in Fourier transform infrared (FT-IR) spectroscopic imaging has been demonstrated using a single reflection variable angle attenuated total reflection (ATR) accessory. Chemical information about samples can be obtained in three dimensions by acquiring ATR-FT-IR images at different angles of incidence through the ATR crystal. The image quality and field of view achieved at different angles of incidence has been discussed. A polymer film comprising two layers has been used as an example to demonstrate the principle of the measurement. The demonstrated approach is a promising tool to obtain depth profiles of heterogeneous materials. The extent of the measured depths is limited and ranges from approximately 0.3 to 4 mu m, but the spatial resolution in the z-direction is not limited by diffraction. The development of this approach opens up the possibility to study the spatial heterogeneity of thin films including biological tissues, such as hair and skin, with high depth resolution.