| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jakobsen, Mogens Havsteen
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2019Nanoimprinting reflow modified moth-eye structures in chalcogenide glass for enhanced broadband antireflection in the mid-infraredcitations
- 2019Optimization of 3D-printed microstructures for investigating the properties of the mucus biobarriercitations
- 2018Direct nanoimprinting of moth-eye structures in chalcogenide glass for broadband antireflection in the mid-infraredcitations
- 2017Combined Colorimetric and Gravimetric CMUT Sensor for Detection of Phenylacetonecitations
- 2017Covalent organic polymer functionalization of activated carbon surfaces through acyl chloride for environmental clean-upcitations
- 2015In situ SU-8 silver nanocompositescitations
- 2014Metal Nanocomposites
- 2011Microwave absorption properties of gold nanoparticle doped polymerscitations
Places of action
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article
Direct nanoimprinting of moth-eye structures in chalcogenide glass for broadband antireflection in the mid-infrared
Abstract
Fresnel reflection at the boundary between two media of differing refractive indices is a major contributing factor to the overall loss in mid-infrared optical systems based on high-index materials such as chalcogenide glasses. In this paper, we present a study of broadband antireflective moth-eye structures directly nanoimprinted on the surfaces of arsenic triselenide (As2Se3)-based optical windows. Using rigorous coupled-wave analysis, we identify a relief design optimized for high transmittance (<1% reflectance) at 6 μm, which when nanoimprinted features a transmittance improvement (ΔT > 12%) in the 5.9–7.3 μm spectral range as well as improved omnidirectional properties. Finally, we demonstrate the adaptability of nanoimprinted surface reliefs by tailoring the nanostructure pitch and height, achieving both extremely broadband antireflective and highly efficient antireflective surface reliefs. The results and methods presented herein provide an efficient and scalable solution for improving the transmission of bulk optics, waveguides, and photonic devices in the mid-infrared.