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Biologically enabled sub-diffractive focusing
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DOI：10.1364/OE.22.027214.png)
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摘要
En 中文
Evolution shows that photonic structures are a constituent part of many animals and flora. These elements produce structural color and are useful in predator-prey interactions between animals and in the exploitation of light for photosynthetic organisms. In particular, diatoms have evolved patterned hydrated silica external valves able to confine light with extraordinary efficiency. Their evolution was probably guided by the necessity to survive in harsh conditions of sunlight deprivation. Here, we exploit such diatom valves, in conjunction with structured illumination, to realize a biological super-resolving lens to achieve sub-diffractive focusing in the far field. More precisely, we consider a single diatom valve of Arachnoidiscus genus which shows symmetries and fine features. By characterizing and using the transmission properties of this valve using the optical eigenmode technique, we are able to confine light to a tiny spot with unprecedented precision in terms of resolution limit ratio, corresponding in this case to 0.21 lambda/NA. (C) 2014 Optical Society of America
Keyword:
DIATOM FRUSTULES
LIGHT
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IF:
3.3
论文数:
6.1W
被引数:
14.3W
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引用论文
Diatomaceous Lessons in Nanotechnology and Advanced Materials纳米技术和先进材料中的硅藻土课程.png)
ADVANCED MATERIALS
ADVANCED MATERIALSIF26.8
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分享收藏Multi-wavelength study of light transmitted through a single marine centric diatomOPTICS EXPRESS
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OPTICS EXPRESSIF3.3
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