Zobrazeno 1 - 10 of 34 pro vyhledávání: '"Jura Rensberg"'
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Akademický článek
Heavily Doped Zinc Oxide with Plasma Frequencies in the Telecommunication Wavelength Range
Autor: Alexander Koch, Hongyan Mei, Jura Rensberg, Martin Hafermann, Jad Salman, Chenghao Wan, Raymond Wambold, Daniel Blaschke, Heidemarie Schmidt, Jürgen Salfeld, Sebastian Geburt, Mikhail A. Kats, Carsten Ronning
Publikováno v: Advanced Photonics Research, Vol 4, Iss 2, Pp n/a-n/a (2023)
Heavy and hyper doping of ZnO by a combination of gallium (Ga) ion implantation using a focused ion beam (FIB) system and post‐implantation laser annealing is demonstrated. Ion implantation allows for the incorporation of impurities with nearly arb
Externí odkaz: https://doaj.org/article/e46dab54b73f4096a459f0aa4d857fa2
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2
Tuning carrier density and phase transitions in oxide semiconductors using focused ion beams
Autor: Hongyan Mei, Alexander Koch, Chenghao Wan, Jura Rensberg, Zhen Zhang, Jad Salman, Martin Hafermann, Maximilian Schaal, Yuzhe Xiao, Raymond Wambold, Shriram Ramanathan, Carsten Ronning, Mikhail A. Kats
We demonstrate spatial modification of the optical properties of thin-film metal oxides, zinc oxide and vanadium dioxide as representatives, using a commercial focused ion beam (FIB) system. Using a Ga+ FIB and thermal annealing, we demonstrated vari
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c7c692430088bd5e9991b23aef0de53
http://arxiv.org/abs/2202.01777
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3
Oxidation of stainless steel 316L – Oxide grains with pronounced inhomogeneous composition
Autor: Martin Seyring, Jura Rensberg, Andreas Undisz, Markus Rettenmayr, Hartmut Stöcker, Barbara Abendroth, Anna Carlsson, Robert Wonneberger, Katharina E. Freiberg
Publikováno v: Corrosion Science. 149:178-184
The formation of oxide grains with pronounced inhomogeneous elemental distribution of Cr and Fe is reported for AISI 316 L stainless steel during the early stages of oxidation at 800 °C. Each oxide grain essentially consists of consecutive Cr-rich a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::678bc440e9936f8b87a5ddc124021c13
https://doi.org/10.1016/j.corsci.2018.12.035
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4
Tunable Infrared Optics Enabled by Defect-Engineering of Vanadium Dioxide Using Focused Ion Beam
Autor: Hongyan Mei, Mikhail A. Kats, Jura Rensberg, Yuzhe Xiao, Chenghao Wan, Shriram Ramanathan, Martin Hafermann, Zhen Zhang, Jad Salman, Carsten Ronning
Publikováno v: Scopus-Elsevier
We demonstrate a simple method of spatially modulating the phase transition of vanadium dioxide using a focused ion beam (FIB). The modulated phase-transition characteristics were quantitatively analyzed, enabling a new platform for tunable infrared
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1da76ae804860ff406781c7eae7177e
https://doi.org/10.1364/cleo_si.2021.sth1e.2
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6
Determination of the full deformation tensor by multi-Bragg fast scanning nano X-ray diffraction
Autor: Carsten Ronning, Andreas Johannes, Philipp Schöppe, Maurizio Ritzer, Tilman A. Grünewald, Manfred Burghammer, Martin Rosenthal, Jura Rensberg
Publikováno v: Journal of Applied Crystallography
Journal of Applied Crystallography, International Union of Crystallography, 2020, 53 (1), pp.99-106. ⟨10.1107/S1600576719016534⟩
Journal of Applied Crystallography, 2020, 53 (1), pp.99-106. ⟨10.1107/S1600576719016534⟩
This work showcases a method to map the full deformation tensor in a single micro-sized crystal. It is shown that measuring the position of two Bragg reflections in reciprocal space is sufficient to obtain the full deformation tensor, if the conditio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::840e014101e651390a104ea531365eb5
https://hal-amu.archives-ouvertes.fr/hal-02466436/document
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7
Toward Frequency-Selective Surfaces via Doping of Zinc Oxide with a Focused Ion Beam
Autor: Mikhail A. Kats, Hongyan Mei, Alexander Koch, Raymond Wambold, Jura Rensberg, Chenghao Wan, Jad Salman, Carsten Ronning, Martin Hafermann
Publikováno v: Scopus-Elsevier
We demonstrate a method to modify the optical properties of zinc oxide by doping with gallium using a focused-ion beam system, which may be a promising way to create ultrathin plasmonic devices.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06eec9c04b06a1857f5f7e2e04efb7dd
https://doi.org/10.1364/cleo_si.2020.stu3p.2
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8
Metasurfaces Enabled by Locally Tailoring Disorder in Phase-Change Materials
Autor: Jura Rensberg, Carsten Ronning, Martin Hafermann, Philipp Schöppe
Publikováno v: ACS Photonics. 5:5103-5109
Active optical metasurfaces with dynamic switchable, tunable, and reconfigurable optical functionalities are an emerging field in photonics and optoelectronics. Especially, chalcogenide-based phase-change materials, such as Ge2Sb2Te5 (GST), can be fa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4bf8cd7dd41f6512fa392949ef24cc15
https://doi.org/10.1021/acsphotonics.8b01441
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9
Fast recovery of ion-irradiation-induced defects in Ge2Sb2Te5 thin films at room temperature
Autor: Jura Rensberg, Mikhail A. Kats, Robin Schock, Carsten Ronning, Chenghao Wan, Martin Hafermann
Publikováno v: Optical Materials Express. 11:3535
Phase-change materials serve a broad field of applications ranging from non-volatile electronic memory to optical data storage by providing reversible, repeatable, and rapid switching between amorphous and crystalline states accompanied by large chan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0be25b3836b34b40c98ed2baf986c60b
https://doi.org/10.1364/ome.439146
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10
Growth and optical waveguide fabrication in spinel MgGa2O4 crystal
Autor: Xiao-Jun Cui, Werner Wesch, Liang-Ling Wang, Elke Wendler, Kui Wu, Jura Rensberg
Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 409:153-157
We report on optical waveguide fabrication in a spinel MgGa 2 O 4 crystal by 6.0 MeV carbon ion implantation at a fluence of 2 × 10 15 ions/cm 2 for the first time to our knowledge. The MgGa 2 O 4 crystal was grown by the floating zone method. The r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1baa8fe9a2b82e1c3a01d2981e59090
https://doi.org/10.1016/j.nimb.2017.05.023
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