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Effect of flexural stress on fabrication and optical properties of a composite photonic material
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2021-05-01 , DOI: 10.1117/1.jnp.15.026002
Devon Courtwright 1 , Sangeeta Rout 1 , Jakeem Adrien 1 , Mikhail A. Noginov 1
Affiliation  

We spin coated thin films of poly(methyl) methacrylate (PMMA) polymer doped with 2-[7-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-3H-indolium iodide (HITC) laser dye onto microscope cover slides under applied flexural stress and found the patterns of scattering (milkiness) to correlate with the spatial variation of the pressure pattern. We further deposited thin gold films on top of the HITC:PMMA films and measured highly unusual transmission spectra of Au collected from strongly deformed (stressed) local areas of the sample. These spectra, which strongly deferred from those of plain Au films deposited onto unstressed glass, could not be described by simple, e.g., Maxwell Garnett, effective media models, calling for a thorough theoretical study.

中文翻译:

弯曲应力对复合光子材料制备和光学性能的影响

我们将掺杂有2- [7-(1,3-二氢-1,3,3-三甲基-2H-吲哚-2-亚烷基)-1,3的聚甲基丙烯酸甲酯(PMMA)聚合物的涂层薄膜旋涂,在施加弯曲应力的条件下,将5-庚三烯基] -1,3,3-三甲基-3H-碘化碘(HITC)激光染料涂到显微镜盖玻片上,发现散射(乳状)的图案与压力图案的空间变化相关。我们进一步在HITC:PMMA膜的顶部沉积了金薄膜,并测量了从样品的强烈变形(应力)局部区域收集的Au的非常不寻常的透射光谱。这些与强烈沉积在无应力玻璃上的纯金薄膜的光谱有很大差异的光谱,无法通过简单的方法(例如Maxwell Garnett)有效的介质模型来描述,需要进行深入的理论研究。
更新日期:2021-05-03
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