Title |
The role of random nanostructures for the omnidirectional anti-reflection properties of the glasswing butterfly
|
---|---|
Published in |
Nature Communications, April 2015
|
DOI | 10.1038/ncomms7909 |
Pubmed ID | |
Authors |
Radwanul Hasan Siddique, Guillaume Gomard, Hendrik Hölscher |
Abstract |
The glasswing butterfly (Greta oto) has, as its name suggests, transparent wings with remarkable low haze and reflectance over the whole visible spectral range even for large view angles of 80°. This omnidirectional anti-reflection behaviour is caused by small nanopillars covering the transparent regions of its wings. In difference to other anti-reflection coatings found in nature, these pillars are irregularly arranged and feature a random height and width distribution. Here we simulate the optical properties with the effective medium theory and transfer matrix method and show that the random height distribution of pillars significantly reduces the reflection not only for normal incidence but also for high view angles. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 17 | 18% |
United Kingdom | 5 | 5% |
Canada | 4 | 4% |
India | 1 | 1% |
Comoros | 1 | 1% |
Germany | 1 | 1% |
Japan | 1 | 1% |
Brazil | 1 | 1% |
Uganda | 1 | 1% |
Other | 8 | 8% |
Unknown | 56 | 58% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 79 | 82% |
Scientists | 13 | 14% |
Science communicators (journalists, bloggers, editors) | 3 | 3% |
Practitioners (doctors, other healthcare professionals) | 1 | 1% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 2 | <1% |
Colombia | 1 | <1% |
United Kingdom | 1 | <1% |
Spain | 1 | <1% |
United States | 1 | <1% |
Unknown | 308 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 79 | 25% |
Researcher | 49 | 16% |
Student > Master | 29 | 9% |
Student > Bachelor | 26 | 8% |
Student > Doctoral Student | 18 | 6% |
Other | 42 | 13% |
Unknown | 71 | 23% |
Readers by discipline | Count | As % |
---|---|---|
Materials Science | 54 | 17% |
Engineering | 50 | 16% |
Physics and Astronomy | 40 | 13% |
Agricultural and Biological Sciences | 20 | 6% |
Chemistry | 20 | 6% |
Other | 40 | 13% |
Unknown | 90 | 29% |