New opportunities in micro- and macro-attenuated total reflection infrared spectroscopic imaging: Spatial resolution and sampling versatility
New opportunities in micro- and macro-attenuated total reflection infrared spectroscopic imaging: Spatial resolution and sampling versatility
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DOI：
10.1366/00037020360625907
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发表时间：
2003-04-01
影响因子：
3.5
通讯作者：
Kazarian, SG
中科院分区：
文献类型：
--
作者：
Chan, KLA;Kazarian, SG
利用衰减全反射红外（ATR-IR）光谱获得化学图像的新机会。本文显示了获得FT-IR图像的空间分辨率至少为3-4妈妈使用Ge ATR物镜与红外显微镜耦合的可行性。与通过透射方法获得的FT-IR图像相比，改进的空间分辨率是由于ATR晶体的高折射率，这给出了高数值孔径，因此具有更高的空间分辨率。FT-IR成像与传统的金刚石ATR配件进行了研究。这是首次报道使用基于金刚石ATR晶体的多功能配件进行FT-IR成像。这些结果表明，空间分辨率高达13妈妈，可以实现不使用红外显微镜物镜。金刚石元件的一个优点是它允许施加压力，因此在整个视场上获得良好的接触。
New opportunities exist to obtain chemical images using attenuated total reflection infrared (ATR-IR) spectroscopy. This paper shows the feasibility of obtaining FT-IR images with a spatial resolution of at least 3-4 mum using a Ge ATR objective coupled with an infrared microscope. The improved spatial resolution compared to FT-IR images obtained by the transmission method is due to the high refractive index of the ATR crystal, which gives a high numerical aperture and hence, a higher spatial resolution. FT-IR imaging with a conventional diamond ATR accessory has been investigated. This is the first time that FT-IR imaging is reported using such a versatile accessory based on a diamond ATR crystal. These results showed that a spatial resolution up to 13 mum can be achieved without the use of infrared microscope objectives. One advantage of the diamond element is that it allows pressure to be applied and hence, good contact to be obtained over the whole field of view.