6 research outputs found

    Meteorological and sea surface water measurement data from Icebreaker Research Vessel ARAON for 2010-2019 Arctic research expeditions

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    Despite of its economic and scientific significances with mineral resources, the Northern Sea Routes, and climate change, the Arctic Ocean has been a challenge for long-term continuous environmental observations. Since its inception in 2009, the ice-breaker research vessel ARAON has been conducting an annual expedition in the Arctic Ocean for the last 10 years from 2010. All the Arctic expeditions have been carried out mainly in August-September when the sea ice extent shrinks and the thickness becomes relatively thin around the Bering Sea, Chukchi Sea, Beaufort Sea, and high latitudes over the Russia, the US, and Canada. IBRV ARAON can conduct research activities through a variety of research equipment such as on-board meteorological data and surface temperature & salinity monitoring data of seawater. In this study, meteorological observation elements including solar radiation, air temperature, relative humidity, wind speed, and wind direction are presented. In addition, sea surface water temperature and salinity monitoring elements including water temperature, salinity, conductivity, and sound speed are presented

    The Student Movement Volume 105 Issue 9: Special Edition AUSA Elections

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    PRESIDENT Dongchan Kim EXECUTIVE VICE PRESIDENT Andrew Rappette T Bruggemann Torrey Joo SOCIAL VICE PRESIDENT Taylor Biek STUDENT MOVEMENT EDITOR Alyssa Henriquez SENATOR-AT-LARGE Abraham Bravo Karenna Lee LAST WORD Who Cares What He Wears?: Doug Emhoff\u27s Debt to Second Ladies, Alyssa Henriquezhttps://digitalcommons.andrews.edu/sm-105/1011/thumbnail.jp

    Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction

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    Superconductor-graphene-superconductor (SGS) junction provides a unique platform to study relativistic electrodynamics of Dirac fermions combined with proximity-induced superconductivity. We report observation of the Josephson effect in proximity-coupled superconducting junctions of graphene in contact with Pb1-xInx (x=0.07) electrodes for temperatures as high as T = 4.8K, with a large IcRn (~ 255 microV). This demonstrates that Pb1-xInx SGS junction would facilitate the development of the superconducting quantum information devices and superconductor-enhanced phase-coherent transport of graphene.Comment: 8 pages, 7 figures, accepted in PR

    Conductivity Enhancement of Nickel Oxide by Copper Cation Codoping for Hybrid Organic-Inorganic Light-Emitting Diodes

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    We demonstrate a CuĀ­(I) and CuĀ­(II) codoped nickelĀ­(II) oxide (NiO<sub><i>x</i></sub>) hole injection layer (HIL) for solution-processed hybrid organic-inorganic light-emitting diodes (HyLEDs). Codoped NiO<sub><i>x</i></sub> films show no degradation on optical properties in the visible range (400ā€“700 nm) but have enhanced electrical properties compared to those of conventional CuĀ­(II)-only doped NiO<sub><i>x</i></sub> film. Codoped NiO<sub><i>x</i></sub> film shows an over four times increased vertical current in comparison with that of NiO<sub><i>x</i></sub> in conductive atomic force microscopy (c-AFM) configuration. Moreover, the hole injection ability of codoped NiO<sub><i>x</i></sub> is also improved, which has ionization energy of 5.45 eV, 0.14 eV higher than the value of NiO<sub><i>x</i></sub> film. These improvements are a consequence of surface chemical composition change in NiO<sub><i>x</i></sub> due to Cu cation codoping. More off-stoichiometric NiO<sub><i>x</i></sub> formed by codoping includes a large amount of Ni vacancies, which lead to better electrical properties. Density functional theory calculations also show that Cu doped NiO model structure with Ni vacancy contains diverse oxidation states of Ni based on both density of states and partial atomic charge analysis. Finally, HyLEDs of Cu codoped NiO<sub><i>x</i></sub> HIL have higher performance comparing with those of pristine NiO<sub><i>x</i></sub>. The current efficiency of devices with NiO<sub><i>x</i></sub> and codoped NiO<sub><i>x</i></sub> HIL are 11.2 and 15.4 cd/A, respectively. Therefore, codoped NiO<sub><i>x</i></sub> is applicable to various optoelectronic devices due to simple solā€“gel process and enhanced doping efficiency
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