Zobrazeno 1 - 10
of 294
pro vyhledávání: '"Kyritsakis, A"'
Autor:
Meng, Guodong, Li, Yimeng, Koitermaa, Roni Aleksi, Zadin, Veronika, Cheng, Yonghong, Kyritsakis, Andreas
Nano-protrusion (NP) on metal surface and its inevitable contamination layer under high electric field is often considered as the primary precursor that leads to vacuum breakdown, which plays an extremely detrimental effect for high energy physics eq
Externí odkaz:
http://arxiv.org/abs/2403.11794
Vacuum arcing poses significant challenges for high-field vacuum devices, underscoring the importance of understanding it for their efficient design. A detailed description of the physical mechanisms involved in vacuum arcing is yet to be achieved, d
Externí odkaz:
http://arxiv.org/abs/2402.08404
Autor:
Moradpur-Tari, Ehsan, Vlassov, Sergei, Oras, Sven, Ernits, Mart, Damerchi, Elyad, Polyakovc, Boris, Kyritsakis, Andreas, Zadin, Veronika
Publikováno v:
Ultramicroscopy, Volume 261, 2024, 113949
Nanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and g
Externí odkaz:
http://arxiv.org/abs/2306.15319
Autor:
Annamarija Trausa, Sven Oras, Sergei Vlassov, Mikk Antsov, Tauno Tiirats, Andreas Kyritsakis, Boris Polyakov, Edgars Butanovs
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 15, Iss 1, Pp 704-712 (2024)
Due to the recent interest in ultrawide bandgap β-Ga2O3 thin films and nanostructures for various electronics and UV device applications, it is important to understand the mechanical properties of Ga2O3 nanowires (NWs). In this work, we investigated
Externí odkaz:
https://doaj.org/article/001d202673684b589a58a192dd7c5157
Autor:
Mart Ernits, Olavi Reinsalu, Naresh Yandrapalli, Sergei Kopanchuk, Ehsan Moradpur-Tari, Immanuel Sanka, Ott Scheler, Ago Rinken, Reet Kurg, Andreas Kyritsakis, Veikko Linko, Veronika Zadin
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract In advanced drug delivery, versatile liposomal formulations are commonly employed for safer and more accurate therapies. Here we report a method that allows a straightforward production of synthetic monodisperse (~ 100 μm) giant unilamellar
Externí odkaz:
https://doaj.org/article/d3722b7656734c66a34061ea096fff76
Autor:
Elyad Damerchi, Sven Oras, Edgars Butanovs, Allar Liivlaid, Mikk Antsov, Boris Polyakov, Annamarija Trausa, Veronika Zadin, Andreas Kyritsakis, Loïc Vidal, Karine Mougin, Siim Pikker, Sergei Vlassov
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 15, Iss 1, Pp 435-446 (2024)
Metallic nanowires (NWs) are sensitive to heat treatment and can split into shorter fragments within minutes at temperatures far below the melting point. This process can hinder the functioning of NW-based devices that are subject to relatively mild
Externí odkaz:
https://doaj.org/article/3b1c3789808641a38799b0e658bddee1
Autor:
Kyritsakis, Andreas
Publikováno v:
J. Appl. Phys. 133, 113302 (2023)
Field electron emission from nanometer-scale objects deviates from the predictions of the classical emission theory as both the electrostatic potential curves within the tunneling region and the image potential deviates from the planar one. This impe
Externí odkaz:
http://arxiv.org/abs/2207.06263
Publikováno v:
J. Phys. D: Appl. Phys. 55, 465302 (2022)
Under strong electric fields, an arc of strong current flowing through plasma can link two metal surfaces even in ultra high vacuum. Despite decades of research, the chain of events leading to vacuum arc breakdowns is hitherto unknown. Previously we
Externí odkaz:
http://arxiv.org/abs/2205.13236
Although atomic diffusion on metal surfaces under high electric fields has been studied theoretically and experimentally since the 1970s, its accurate and quantitative theoretical description remains a significant challenge. In our previous work, we
Externí odkaz:
http://arxiv.org/abs/2201.03460
Autor:
Moradpur-Tari, Ehsan, Vlassov, Sergei, Oras, Sven, Ernits, Mart, Damerchi, Elyad, Polyakov, Boris, Kyritsakis, Andreas, Zadin, Veronika
Publikováno v:
In Ultramicroscopy July 2024 261