Infrared Polariscopy Imaging of Linear Polymeric Patterns with a Focal Plane Array
Infrared Polariscopy Imaging of Linear Polymeric Patterns with a Focal Plane Array
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DOI：
10.3390/nano9050732
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发表时间：
2019-05-01
期刊：
影响因子：
5.3
通讯作者：
Morikawa, Junko
中科院分区：
文献类型：
--
作者：
Honda, Reo;Ryu, Meguya;Morikawa, Junko
Polymorphic复制演示使用高光谱成像与焦平面阵列（FPA）探测器在红外（IR）光谱区域的照明下的热光源和同步加速器光源。焦平面傅里叶变换红外（FTIR）成像显微光谱是有用的监测真实的时间变化时，在特定的吸收带结合高亮度同步辐射源。在这项研究中，几种类型的样品具有独特的结构基序，并用于评估的能力偏光下，这种FPA-FTIR成像技术。结果表明，在红外波长的偏光所需的时间可以大大减少的FPA-FTIR成像方法。通过使用自然的和激光加工的聚合物与亚波长的功能，吸收分子偶极子和更高的顺序模式（激光加工结构）的排列被揭示。在吸收峰处的光谱偏振可以揭示亚波长图案的取向（即使它们不是空间分辨的）或吸收偶极子的取向。
Polariscopy is demonstrated using hyperspectral imaging with a focal plane array (FPA) detector in the infrared (IR) spectral region under illumination by thermal and synchrotron light sources. FPA Fourier-transform IR (FTIR) imaging microspectroscopy is useful for monitoring real time changes at specific absorption bands when combined with a high brightness synchrotron source. In this study, several types of samples with unique structural motifs were selected and used for assessing the capability of polariscopy under this FPA-FTIR imaging technique. It was shown that the time required for polariscopy at IR wavelengths can be substantially reduced by the FPA-FTIR imaging approach. By using natural and laser fabricated polymers with sub-wavelength features, alignment of absorbing molecular dipoles and higher order patterns (laser fabricated structures) were revealed. Spectral polariscopy at the absorption peaks can reveal the orientation of sub-wavelength patterns (even when they are not spatially resolved) or the orientation of the absorbing dipoles.