Improved light extraction in the bioluminescent lantern of a Photuris firefly (Lampyridae)

Bay, A.; Cloetens, Peter; Suhonen, Heikki; Vigneron, Jean Pol

doi:10.1364/oe.21.000764

Cited by 24 publications

(23 citation statements)

References 18 publications

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“…[351] The light source (the reaction center) is contained inside a high-refractive-index medium, imposing boundary constraints on the morphology of the lantern in order to optimize light extraction to the outside air due to total internal reflection at large incidence angles. [352,353] Bay et al have recently shown that the structure of the cuticle outside of the light-emitting organ increases the efficiency of the light emission by ≈10%. [352] The light-extraction efficiency of synthetic electroluminescent devices, e.g., organic light-emitting diodes (OLEDs), suffers from the same refractive-index-mismatch, [354] and the insight from the firefly lantern structure has been used to improve light-extraction from OLEDs by up to 55%.…”

Section: Bioluminescencementioning

confidence: 99%

“…[352,353] Bay et al have recently shown that the structure of the cuticle outside of the light-emitting organ increases the efficiency of the light emission by ≈10%. [352] The light-extraction efficiency of synthetic electroluminescent devices, e.g., organic light-emitting diodes (OLEDs), suffers from the same refractive-index-mismatch, [354] and the insight from the firefly lantern structure has been used to improve light-extraction from OLEDs by up to 55%. [353] …”

Section: Bioluminescencementioning

confidence: 99%

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It's Not a Bug, It's a Feature: Functional Materials in Insects

2018

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Over the course of their wildly successful proliferation across the earth, the insects as a taxon have evolved enviable adaptations to their diverse habitats, which include adhesives, locomotor systems, hydrophobic surfaces, and sensors and actuators that transduce mechanical, acoustic, optical, thermal, and chemical signals. Insect‐inspired designs currently appear in a range of contexts, including antireflective coatings, optical displays, and computing algorithms. However, as over one million distinct and highly specialized species of insects have colonized nearly all habitable regions on the planet, they still provide a largely untapped pool of unique problem‐solving strategies. With the intent of providing materials scientists and engineers with a muse for the next generation of bioinspired materials, here, a selection of some of the most spectacular adaptations that insects have evolved is assembled and organized by function. The insects presented display dazzling optical properties as a result of natural photonic crystals, precise hierarchical patterns that span length scales from nanometers to millimeters, and formidable defense mechanisms that deploy an arsenal of chemical weaponry. Successful mimicry of these adaptations may facilitate technological solutions to as wide a range of problems as they solve in the insects that originated them.

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Section: Bioluminescencementioning

confidence: 99%

Section: Bioluminescencementioning

confidence: 99%

It's Not a Bug, It's a Feature: Functional Materials in Insects

2018

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“…The bioluminescence of these tropical species of fireflies has been modeled in order to design and engineer next-generation LED lights which are orders of magnitude more energy-efficient [30,31]. However, the embodied energy underwriting the lighting system of each e-bike battery in the installation would require generating 500 hours of pedaling at 75 watts per hour just to generate the equivalent amount of energy used to make each battery [32].…”

Section: Isea Bright Futurementioning

confidence: 99%

The Arts of Energy: Between Hoping for the Stars and Despairing in the Detritus

Wodak

2016

Humanities

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Fossil fueled energy production and consumption are the basis of global industrialised societies, with the deleterious biophysical effects of such production and consumption also forming the basis of the advent of Anthropocene. In the context of science and environmental policy, hope denotes rapid decarbonisation across the globe. Meanwhile, in art and the humanities, the study of such energy and decarbonisation remains nascent and nebulous. To account for these discrepancies, this article outlines the scale of the biophysical challenges by first establishing the relationship between outspoken climate scientists and international organisations determining climate and energy policy. This relationship-between marginalised and mainstream-is used to frame the analogous challenges for two cultural fields that have recently emerged in direct response: energy humanities and the arts of energy. The discussion centers on the challenge common to all fields-between the outspoken marginal and the orthodox mainstream-to speculate on how the arts of energy may recalibrate a context-contingent hope for energy futures, drawing on case studies of ISEA Bright Future and Facing Futures Free From Fear, two installations simultaneously staged by the author in 2013 about the relationship between energy and climate change. Keywords: energy; energy humanities; renewable energy; fossil fuels; climate change; Anthropocene; art; climatology; space exploration Emperors, Elephants, and EnergyIt is 6 November 2012 at the University of Bristol. The Cabot Institute, the University's cross-disciplinary research institute for 21st century environmental challenges, is holding its annual lecture as part of the University's Festival of Social Sciences and Law. The auditorium is filled to capacity, there to hear from Professor Kevin Anderson, one of the world's leading climate scientists. A chartered engineer initially trained in mechanical engineering, Anderson has since strayed outside of engineering, having been Director of the UK's Tyndall Centre for Climate Change Research, one of the foremost climate change research institutes in the world, of which he is presently Deputy Director. He has also purposefully strayed outside of climate science and into the relationship between climate change and the politics and policy of energy, as Professor of Energy and Climate Change in the School of Mechanical, Aeronautical and Civil Engineering at the University of Manchester. His straying outside of domains and disciplines extends beyond the normative role played by scientists and academics and into the activism of working in and against UK government commissions around climate and energy policy. This level of eclecticism appears to have fuelled the capacity interest in his lecture.

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“…The second pattern was fabricated based on Refs. 18,19 using electron beam lithography and silicon wet etching. From both of the patterns a nickel plate was made using electroplating.…”

Section: Fabricationmentioning

confidence: 99%

Luminescent optical epoxies for solar concentrators

et al. 2014

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In this work luminescent optical epoxy samples with micropatterning were fabricated. Five different photoluminescent materials were used as substance in the curing of epoxy resin to form luminescent epoxies of different colors. The absorbance spectra of the unpatterned epoxy samples were measured with spectrometer and the luminescence intensities of all fabricated luminescent epoxy samples were measured using custom made bispectrometer. The micropatterns were copied adequately in the epoxy surface, which would also suggest that nanopatterning would also be possible. Furthermore, the ability to pattern the surface allows fabrication of for example anti-reflective, hydrophobic and selfcleaning structures. Further investigation in different luminescent materials suitable for solar concentrator applications is required in order to develop current systems.

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Improved light extraction in the bioluminescent lantern of a Photuris firefly (Lampyridae)

Cited by 24 publications

References 18 publications

It's Not a Bug, It's a Feature: Functional Materials in Insects

It's Not a Bug, It's a Feature: Functional Materials in Insects

The Arts of Energy: Between Hoping for the Stars and Despairing in the Detritus

Luminescent optical epoxies for solar concentrators

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