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Now showing items 129 - 144 of 148123

  • Graphene-ZnO: N barristor on a polyethylene naphthalate substrate

    Hwang, Hyeon Jun   Heo, Sunwoo   Yoo, Won Beom   Lee, Byoung Hun  

    Graphene-ZnO: N Schottky junction barristors are fabricated on a flexible polyethylene naphthalate substrate utilizing a low thermal budget integration process with a maximum process temperature below 200 degrees C. An on/off ratio of over 10(4) is obtained with a 0.1 A/cm(2) drive current density at V-d =3D 0.5 V. The transmittance, degraded by the device stack, was 2.5-3% in the visible wavelength range, and a high on/off ratio was maintained after 600 bending cycles at a 0.6% strain (bending radius =3D 10 mm). (c) 2018 Author(s).
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  • A new species of Helico?n from Taiwan

    GOH TEIK-KHIANG   KUO CHANG-HSIN  

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  • Cyclic symmetries of A(n)-quiver representations

    Nadler, David  

    This note contains a combinatorial construction of symmetries arising in symplectic geometry (partially wrapped or infinitesimal Fukaya categories), algebraic geometry (derived categories of singularities), and K-theory (Waldhausen's S-construction). Our specific motivation (in the spirit of expectations of Kontsevich) is a combinatorial construction of categorical quantizations of Lagrangian skeleta of symplectic manifolds. The main result of this paper gives an immediate solution in the one-dimensional case of ribbon graphs. (C) 2014 Elsevier Inc. All rights reserved.
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  • Copept?n Level in Coronary Artery Ectas?a

    Se?en ?zlem   Yalva? ?zkan   Da?l? Mustafa Necati  

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  • Topological complexity of n points on a tree

    Scheirer, Steven  

    The topological complexity of a path-connected space X , denoted by TC(X) , can be thought of as the minimum number of continuous rules needed to describe how to move from one point in X to another. The space X is often interpreted as a configuration space in some real-life context. Here, we consider the case where X is the space of configurations of n points on a tree Gamma . We will be interested in two such configuration spaces. In the first, denoted by C-n(Gamma), the points are distinguishable, while in the second, UCn(Gamma), the points are indistinguishable. We determine TC(UCn(Gamma)) for any tree Gamma and many values of n , and consequently determine TC(C-n(Gamma)) for the same values of n (provided the configuration spaces are path-connected).
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  • Topological complexity of n points on a tree

    Scheirer, Steven  

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  • Construction of a (k, n)-visual cryptography scheme

    Lakshmanan, R.   Arumugam, S.  

    In this paper we give an explicit construction of basis matrices for a (k, n)-visual cryptography scheme for integers k and n with . In balanced VCS every set of participants with equal cardinality has same relative contrast. The VCS constructed in this paper is a balanced for general k. Also we obtain a formula for pixel expansion and relative contrast. We also prove that our construction gives optimal contrast and minimum pixel expansion when and n - 1.
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  • A Versatile Route to N,N '-Tetraaryl-Substituted 2,5-Diaminothiophenes

    Heichert, Christoph   Wrackmeyer, Marion   Hartmann, Horst  

    By reaction of N,N'-tetraaryl-substituted succinic diamides with Lawesson's reagent, a series of N,N'-tetraaryl-substituted 2,5-diaminothiophenes was prepared. The N,N'-tetrakis(4-bromophenyl)- 2,5-diaminothiophene, thus available, was used as an educt for the synthesis of N,N'-tetrakis(4-diphenylaminophenyl)2,5- diaminothiophene by reaction with four equivalents of diphenylamine in the presence of palladium as catalyst. Both the N,N'-tetraaryl- substituted 2,5-diaminothiophenes and the N,N'-tetrakis(4-diphenylaminophenyl)- 2,5-diaminothiophene can be electrochemically oxidised in a stepwise manner via the corresponding radical cations into relatively stable dications. The latter compounds can also be oxidised into tetracationic species.
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  • Frederick N. Scatena: A tropical geomorphologist

    Lugo   Ariel E.  

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  • On representations of Yangian of Lie Superalgebra A(n, n) type

    Stukopin, Vladimir  

    The finite-dimensional irreducible representations of Yangian of Lie Superalgebra of A(n, n) type is described in terms of Drinfel'd polynomials. The necessarily and sufficient conditions of finite-dimensionality of irreducible representation are formulated and proved. The Poincare-Birkoff-Witt theorem for Yangian of A(n, n) Lie Superalgebra is proved also.
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  • Inleiding – Die idiolek van ’n skrywer

    Du Plooy, Heilna  

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  • Ammonia N–H activation by a N,N′-diamidocarbene

    Hudnall, Todd W.   Moerdyk, Jonathan P.   Bielawski, Christopher W.  

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  • A. N. Sreeram

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  • A. N. Sreeram

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  • C20?n Ge n heterofullerenes (n?=?5–10) on focus: a density functional perspective

    Koohi, M.   Kassaee, M. Z.   Ghavami, M.   Haerizade, B. N.   Ahmadi, A. A.  

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  • William N. Garrett (1926–2016): A brief biography

    Oberbauer, A. M.; Old, C. A.  

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