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Electronic fingerprint mechanism of NO_(x) sensor based on single-material SnP_(3) logical junction

npj Computational Materials 2022年第1期8卷 2107-2116页

作者： Muhammad S.Ramzan agnieszka b.kuc Han Seul Kim Department of Physics and Earth Sciences Jacobs University BremenCampus Ring 128759BremenGermany Institut für Physik Carl von Ossietzky Universität Oldenburg26129OldenburgGermany Helmholtz-Zentrum Dresden-Rossendorf Abteilung RessourcenökologieForschungsstelle LeipzigPermoserstr.1504318LeipzigGermany Division of National Supercomputing R&D Korea Institute of Science and Technology Information(KISTI)245 Daehak-roYuseong-guDaejeon34141Republic of Korea

An extraordinary sensing ability of the SnP3-based single-material logical junction for harmful NO_(x)gases was explored in the present work through a set of first-principles electronic structure *** a sensing platform,a metal-semiconductor-metal lateral junction composed of a single material was designed based on the metallic/semiconducting characteristics of trilayer/monolayer SnP_(3).Lacking a Schottky barrier at the electrode-channel interface,the gas-specific charge transfer between the SnP_(3) layer and gas molecules was precisely detected based on the current-voltage ***_(x)gases with strong adsorption strength and charge transfer amount on the SnP_(3)substrate were shown to be particularly well detected in this manner,in terms of either the absolute magnitude of the current or negative differential resistance(NDR)at a reasonably small bias voltage as a sensing *** work will provide a new pathway to design a Schottky barrier-free metal-semiconductor junction for highly sensitive sensor applications.

关键词： gases barrier charge

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Microstructure and corrosion resistance of a duplex structured Mg–7.5Li–3Al–1Zn

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Journal of Magnesium and Alloys 2021年第2期9卷 467-477页

作者： Anna Dobkowska bogusława Adamczyk–Cieslak JiríKubásek Dalibor Vojtech Dariusz kuc Eugeniusz Hadasik Jarosław Mizera Faculty of Materials Science and Engineering Warsaw University of Technology141 Wołoska St02-507 WarsawPoland Chemistry Department Western University of Ontario1151 Richmond StLondonON N6A 5B7Canada Department of Metals and Corrosion Engineering University of Chemistry and TechnologyTechnicka 516628 Prague 6Czechia Institute of Materials Engineering Silesian University of TechnologyKrasinskiego 8St40-019 KatowicePoland

This study describes the corrosion resistance of extruded,and extruded with post-processing annealing,Mg–7.5 Li–3 Al–1 Zn *** results demonstrate that extrusion at 350°C with an extrusion speed 0.5 s^(-1) does not lead to the full recrystallization of the alloy,and the material still exhibits a dendritic *** post-processing annealing triggers the microstructure transformation,and the relative composition of the alloy *** ratio ofβ(Li)toα(Mg)in the extruded alloy was 29–71%;after annealing amount ofβ(Li)increased,and the ratio ofβ(Li)toα(Mg)in the annealed alloy was 35–65%.Corrosion testing shows that in 3.5 wt%Na Cl the extruded alloys immediately undergo strong *** a result of the subsequent annealing,an improvement of corrosion resistance is *** higher amount ofβ(Li)in the annealed alloy reduces the area ratio of cathodic to anodic sites of corrosion,and this makes the annealed alloy more resistive under the analyzed conditions.

关键词： Magnesium-Lithium corrosion Extrusion Annealing

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