Optical properties of low-refractive index polymers

Nuggehalli M Ravindra, Airefetalo Sadoh, S. Hossain, Sheldon Fereira
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引用次数: 1

Abstract

The study of optical properties of polymers is an integral part of smart materials research. It has immense potential in diverse fields spanning from structural health monitoring and underwater surveillance to medical imaging and automobile industries. Polymers are excellent candidates for these purposes due to their adaptable physical properties, one of which is their optical response to external stimuli such as temperature, pressure, magnetic fields, humidity, surrounding gases etc. Thus, being able to predict these responses is invaluable in the formulation of devices that are relevant to these applications. This paper presents a study of the simulation of the optical properties of several polymers when exposed to electromagnetic radiation, ranging from Ultra Violet to Near-Infra Red. A simulation of the influence of varying thicknesses of polymers (10, 50, 100 µm) on substrates [silicon (10, 50, 100 µm) and metal (Au) (0.025, 0.053, 0.117 µm)], on the optical properties, is presented in this study. Consequently, the results of these simulations serve as a guideline for selecting the best material configuration for the desired application. The optical bandgap of some of the polymer candidates is examined in light of Tauc’s method of analysis of the absorption coefficient variation with energy.
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低折射率聚合物的光学性质
聚合物光学性质的研究是智能材料研究的重要组成部分。从结构健康监测和水下监测到医学成像和汽车工业,它在各个领域都有巨大的潜力。聚合物是这些用途的优秀候选者,因为它们具有适应性强的物理特性,其中之一是它们对外部刺激(如温度、压力、磁场、湿度、周围气体等)的光学响应。因此,能够预测这些响应在制定与这些应用相关的设备是无价的。本文介绍了几种聚合物暴露在从紫外线到近红外的电磁辐射下的光学特性的模拟研究。本研究模拟了在衬底[硅(10、50、100微米)和金属(Au)(0.025、0.053、0.117微米)]上不同厚度的聚合物(10、50、100微米)对光学性能的影响。因此,这些模拟的结果可作为为所需应用选择最佳材料配置的指导方针。利用陶克吸收系数随能量变化的分析方法,研究了一些候选聚合物的光学带隙。
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