Zobrazeno 1 - 10
of 325
pro vyhledávání: '"Zeitner Uwe"'
Autor:
Gour Jeetendra, Beer Sebastian, Paul Pallabi, Alberucci Alessandro, Steinert Michael, Szeghalmi Adriana, Siefke Thomas, Peschel Ulf, Nolte Stefan, Zeitner Uwe Detlef
Publikováno v:
Nanophotonics, Vol 13, Iss 22, Pp 4191-4202 (2024)
In the rapidly evolving field of plasmonic metasurfaces, achieving homogeneous, reliable, and reproducible fabrication of sub-5 nm dielectric nanogaps is a significant challenge. This article presents an advanced fabrication technology that addresses
Externí odkaz:
https://doaj.org/article/12b6110fbc964d26b262f7d0d1f7e066
Autor:
Kuppadakkath Athira, Najafidehaghani Emad, Gan Ziyang, Tuniz Alessandro, Ngo Gia Quyet, Knopf Heiko, Löchner Franz J. F., Abtahi Fatemeh, Bucher Tobias, Shradha Sai, Käsebier Thomas, Palomba Stefano, Felde Nadja, Paul Pallabi, Ullsperger Tobias, Schröder Sven, Szeghalmi Adriana, Pertsch Thomas, Staude Isabelle, Zeitner Uwe, George Antony, Turchanin Andrey, Eilenberger Falk
Publikováno v:
Nanophotonics, Vol 11, Iss 19, Pp 4397-4408 (2022)
We report for the first time the direct growth of molybdenum disulfide (MoS2) monolayers on nanostructured silicon-on-insulator waveguides. Our results indicate the possibility of utilizing the Chemical Vapour Deposition (CVD) on nanostructured photo
Externí odkaz:
https://doaj.org/article/e687295c18ea4723b5c68330a35235fb
Autor:
Younesi, Mohammadreza, Kasebier, Thomas, Elmanov, Ilia, Li, Yang-Teng, Kumar, Pawan, Geiss, Reinhard, Siefke, Thomas, Eilenberger, Falk, Setzpfandt, Frank, Zeitner, Uwe, Pertsch, Thomas
We report on the wafer scale fabrication of single mode low-loss lithium niobate on insulator waveguides utilizing a chemically amplified resist and an optimized dry etching method. The fabricated single mode waveguides are free of residuals and re-d
Externí odkaz:
http://arxiv.org/abs/2407.09208
Publikováno v:
EPJ Web of Conferences, Vol 287, p 05026 (2023)
Stochastic Si nanostructures for antireflection (AR) fabricated by reactive ion etching (RIE) are presented for use in different spectral ranges. The lithography-free fabrication enables its application on highly curved surfaces. ALD-coatings of Al2O
Externí odkaz:
https://doaj.org/article/97aea6bc1f8e46f09e80a98814f2cb34
Publikováno v:
EPJ Web of Conferences, Vol 287, p 05007 (2023)
This study introduces an actively switchable wire grid polarizer exploiting the semiconductor-metal transition of vanadium dioxide. Operating at a near-infrared wavelength, the device features a SiO2 substrate with VO2 deposited by atomic layer depos
Externí odkaz:
https://doaj.org/article/dcdb685ab7c84f7ea8563efcd722df95
Publikováno v:
EPJ Web of Conferences, Vol 287, p 05003 (2023)
The damage caused by irradiation of crystalline material with ions results in localized volume changes. Here, swelling is utilized to fabricate nanostructured gratings with heights below 10 nm for extreme ultraviolet radiation. Irradiations were perf
Externí odkaz:
https://doaj.org/article/80963c445dd2441ab252e0e4d38ef819
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 19, Iss 1, p 21 (2023)
Vanadium dioxide (VO2) has promising applications in smart windows and active micro-optical devices due to its thermochromic properties. However, the successful fabrication and patterning of VO2 thin films with the correct stoichiometry and phase are
Externí odkaz:
https://doaj.org/article/d32aff2a89fe4b099dde2045b03de3c1
Publikováno v:
EPJ Web of Conferences, Vol 266, p 05011 (2022)
Vanadium dioxide as a phase change material is usually known for its consideration in smart window applications. However, the attention shifts to using it in actively switched optical elements. The main challenges are the deposition of vanadium dioxi
Externí odkaz:
https://doaj.org/article/b380c07a07b44b159c7516dff323ca37
Publikováno v:
EPJ Web of Conferences, Vol 266, p 10021 (2022)
The polarization properties of light can be fully controlled with nano-optical wire grid polarizers and artificial birefringent grating structures. We demonstrate an integrated polarimeter based on stacked layers of such elements. However, the optica
Externí odkaz:
https://doaj.org/article/cfaf1114e19b48468594380d07b7b878
Publikováno v:
EPJ Web of Conferences, Vol 266, p 03008 (2022)
Surface relief diffraction gratings offer a high flexibility in their design and thus allow to synchronize their optical performance with the specific requirements of the underlying application. However, the accuracy and the specific control of the m
Externí odkaz:
https://doaj.org/article/89edcda05c10436fbd60774f96099529