Reflection Efficiencies of a Periodic Absorbing Surface

Miller, Jack C.

doi:10.1364/josa.54.000353

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…The camouflaging strategy of some insects and the exceptional photon collection capability of nocturnal creatures enabling them to see at night motivated scientists to analyze the eyes of such night-active insects, especially moths (Fig. 10(a)) and butterflies 39,40 and transparent wings of hawkmoths. 41 It turned out that the corneal surface in the eyes of moths has a hexagonal array of sub wavelength (SW) conical or cylindrical nanostructures known as nipple-array.…”

Section: Biomimetic Photonic Nanostructures (''Moth's Eye'')mentioning

confidence: 99%

Anti-reflective coatings: A critical, in-depth review

Raut

Ganesh

Nair

et al. 2011

Energy Environ. Sci.

1,180

848

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Anti-reflective coatings (ARCs) have evolved into highly effective reflectance and glare reducing components for various optical and opto-electrical equipments. Extensive research in optical and biological reflectance minimization as well as the emergence of nanotechnology over the years has contributed to the enhancement of ARCs in a major way. In this study the prime objective is to give a comprehensive idea of the ARCs right from their inception, as they were originally conceptualized by the pioneers and lay down the basic concepts and strategies adopted to minimize reflectance. The different types of ARCs are also described in greater detail and the state-of-the-art fabrication techniques have been fully illustrated. The inspiration that ARCs derive from nature ('biomimetics') has been an area of major research and is discussed at length. The various materials that have been reportedly used in fabricating the ARCs have also been brought into sharp focus. An account of application of ARCs on solar cells and modules, contemporary research and associated challenges are presented in the end to facilitate a universal understanding of the ARCs and encourage future research.

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Section: Biomimetic Photonic Nanostructures (''Moth's Eye'')mentioning

confidence: 99%

Anti-reflective coatings: A critical, in-depth review

Raut

Ganesh

Nair

et al. 2011

Energy Environ. Sci.

1,180

848

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show abstract

“…Figure shows (a) optical and (b) scanning electron microscope (SEM) images of a (i) moth eye, (ii) cicada wing, and (iii) glasswing butterfly wing. Moths eyes are well-known for their antireflection properties. − Moth eye surfaces consist of hexagonal close-packed nanostructures that are roughly 200 nm tall with 300 nm pitch. These structures act as an effective continuous refractive index gradient between the air and the surface to provide for better antireflection.…”

Section: Photon Managementmentioning

confidence: 99%

Challenges and Prospects of Bio-Inspired and Multifunctional Transparent Substrates and Barrier Layers for Optoelectronics

2020

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Bio-inspiration and advances in micro/nanomanufacturing processes have enabled the design and fabrication of micro/nanostructures on optoelectronic substrates and barrier layers to create a variety of functionalities. In this review article, we summarize research progress in multifunctional transparent substrates and barrier layers while discussing future challenges and prospects. We discuss different optoelectronic device configurations, sources of bio-inspiration, photon management properties, wetting properties, multifunctionality, functionality durability, and device durability, as well as choice of materials for optoelectronic substrates and barrier layers. These engineered surfaces may be used for various optoelectronic devices such as touch panels, solar modules, displays, and mobile devices in traditional rigid forms as well as emerging flexible versions.

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Corneal microprojections in coleoid cephalopods

et al. 2012

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The cornea is the first optical element in the path of light entering the eye, playing a role in image formation and protection. Corneas of vertebrate simple camera-type eyes possess microprojections on the outer surface in the form of microridges, microvilli, and microplicae. Corneas of invertebrates, which have simple or compound eyes, or both, may be featureless or may possess microprojections in the form of nipples. It was previously unknown whether cephalopods (invertebrates with camera-type eyes like vertebrates) possess corneal microprojections and, if so, of what form. Using scanning electron microscopy, we examined corneas of a range of cephalopods and discovered nipple-like microprojections in all species. In some species, nipples were like those described on arthropod compound eyes, with a regular hexagonal arrangement and sizes ranging from 75 to 103 nm in diameter. In others, nipples were nodule shaped and irregularly distributed. Although terrestrial invertebrate nipples create an antireflective surface that may play a role in camouflage, no such optical function can be assigned to cephalopod nipples due to refractive index similarities of corneas and water. Their function may be to increase surface-area-to-volume ratio of corneal epithelial cells to increase nutrient, gas, and metabolite exchange, and/or stabilize the corneal mucous layer, as proposed for corneal microprojections of vertebrates.

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Reflection Efficiencies of a Periodic Absorbing Surface

Cited by 9 publications

References 3 publications

Anti-reflective coatings: A critical, in-depth review

Anti-reflective coatings: A critical, in-depth review

Challenges and Prospects of Bio-Inspired and Multifunctional Transparent Substrates and Barrier Layers for Optoelectronics

Corneal microprojections in coleoid cephalopods

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