材料科学
纳米结构
碳纤维
反射率
炭黑
光电子学
电磁辐射
纳米技术
光学
物理
复合材料
复合数
天然橡胶
作者
Wei Sun,Ai Du,Yu Chen Feng,Jun Shen,Silu Huang,Jun Tang,Bin Zhou
出处
期刊:ACS Nano
[American Chemical Society]
日期:2016-09-06
卷期号:10 (10): 9123-9128
被引量:98
标识
DOI:10.1021/acsnano.6b02039
摘要
Many scientists have devoted themselves to the study of the interaction between subwavelength structures and electromagnetic waves. These structures are commonly composed of regular arrays of subwavelength protuberances, which can be artificially designed. However, extending from 2D periodic patterns to 3D disordered subwavelength structures has not been studied yet. In this study, we studied the total diffuse reflectivity of carbon aerogels with various 3D networks of randomly oriented particle-like nanostructures by using normally incident visible light (430-675 nm). We observed that the different 3D network nanostructures of carbon aerogels, especially for the structures with the minimum size, reduced the reflectivity effectively. It was found that the key mechanism for the subwavelength-structure-induced ultralow reflectivity property is due to the decrease of the amplitude of electron vibration forced by the electromagnetic wave, which provides a simple method for designing perfect black materials.
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