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Generalization of Czoga\l a-Drewniak Theorem for $n$-ary semigroups
http://hdl.handle.net/10993/31497
Title: Generalization of Czoga\l a-Drewniak Theorem for $n$-ary semigroups
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<br/>Author, co-author: Kiss, Gergely; Somlai, Gabor
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<br/>Abstract: We investigate n-ary semigroups as a natural generalization of binary
semigroups. We refer it as a pair (X,F_n), where X is a set and an n-associative function
F_n : X^n -> X is defined on X. We show that if F_n is idempotent, n-associative
function which is monotone in each of its variables, defined on an interval I and has a neutral element, then F_n is combination of the minimum and maximum
operation. Moreover we can characterize the n-ary semigroups (I,F_n) where F_n has
the previous properties.Recent results on conservative and symmetric n-ary semigroups
http://hdl.handle.net/10993/31496
Title: Recent results on conservative and symmetric n-ary semigroups
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<br/>Author, co-author: Kiss, Gergely; Devillet, Jimmy; Marichal, Jean-Luc
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<br/>Abstract: See attached fileRegional comparison of absolute gravimeters SIM.M.G-K1 key comparison
http://hdl.handle.net/10993/31483
Title: Regional comparison of absolute gravimeters SIM.M.G-K1 key comparison
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<br/>Author, co-author: Newell, D. B.; Westrum, D. Van; Francis, Olivier; Kanney, J.; Liard, J.; Ramirez, A. E.; Lucero, B.; Ellis, B.; Greco, F.; Pistorio, A.; Reudink, R.; Iacovone, D.; Baccaro, F.; Silliker, J.; Wheeler, R. D.; Falk, R.; Ruelke, A.
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<br/>Abstract: Twelve absolute gravimeters were compared during the regional Key Comparison SIM.M.G-K1 of absolute gravimeters. The four gravimeters were from different NMIs and DIs. The comparison was linked to the CCM.G-K2 through EURAMET.M.G-K2 via the DI gravimeter FG5X-216. Overall, the results and uncertainties indicate an excellent agreement among the gravimeters, with a standard deviation of the gravimeters' DoEs better than 1.3 μGal. In the case of the official solution, all the gravimeters are in equivalence well within the declared uncertainties. == Main text To reach the main text of this paper, click on Final Report [http://www.bipm.org/utils/common/pdf/final_reports/M/G-K1/SIM.M.G-K1.pdf] . Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/ [http://kcdb.bipm.org/] . The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).Homotopical algebraic context over differential operators
http://hdl.handle.net/10993/31470
Title: Homotopical algebraic context over differential operators
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<br/>Author, co-author: Di Brino, Gennaro; Pistalo, Damjan; Poncin, NorbertOn conservative and associative operations on finite chains
http://hdl.handle.net/10993/31457
Title: On conservative and associative operations on finite chains
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<br/>Author, co-author: Devillet, Jimmy; Couceiro, Miguel; Marichal, Jean-Luc
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<br/>Abstract: See attached fileOn idempotent discrete uninorms
http://hdl.handle.net/10993/31455
Title: On idempotent discrete uninorms
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<br/>Author, co-author: Couceiro, Miguel; Devillet, Jimmy; Marichal, Jean-Luc
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<br/>Abstract: In this paper we provide two axiomatizations of the class of idempotent discrete uninorms as conservative binary operations, where an operation is conservative if it always outputs one of its input values. More precisely we first show that the idempotent discrete uninorms are exactly those operations that are conservative, symmetric, and nondecreasing in each variable. Then we show that, in this characterization, symmetry can be replaced with both bisymmetry and existence of a neutral element.Physical adsorption at the nanoscale: Towards controllable scaling of the substrate-adsorbate van der Waals interaction
http://hdl.handle.net/10993/31436
Title: Physical adsorption at the nanoscale: Towards controllable scaling of the substrate-adsorbate van der Waals interaction
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<br/>Author, co-author: Ambrosetti, Alberto; Silvestrelli, Pier Luigi; Tkatchenko, Alexandre
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<br/>Abstract: The Lifshitz-Zaremba-Kohn (LZK) theory is commonly considered as the correct large-distance limit for the van der Waals (vdW) interaction of adsorbates (atoms, molecules, or nanoparticles) with solid substrates. In the standard approximate form, implicitly based on local dielectric functions, the LZK approach predicts universal power laws for vdW interactions depending only on the dimensionality of the interacting objects. However, recent experimental findings are challenging the universality of this theoretical approach at finite distances of relevance for nanoscale assembly. Here, we present a combined analytical and numerical many-body study demonstrating that physical adsorption can be significantly enhanced at the nanoscale. Regardless of the band gap or the nature of the adsorbate specie, we find deviations from conventional LZK power laws that extend to separation distances
of up to 10–20 nm. Comparison with recent experimental observations of ultra-long-ranged vdW interactions in the delamination of graphene from a silicon substrate reveals qualitative agreement with the present theory. The sensitivity of vdW interactions to the substrate response and to the adsorbate characteristic excitation frequency also suggests that adsorption strength can be effectively tuned in experiments, paving the way to an improved control of physical adsorption at the nanoscale.Joint signature of two or more systems with applications to multistate systems made up of two-state components
http://hdl.handle.net/10993/31409
Title: Joint signature of two or more systems with applications to multistate systems made up of two-state components
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<br/>Author, co-author: Marichal, Jean-Luc; Mathonet, Pierre; Navarro, Jorge; Paroissin, Christian
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<br/>Abstract: The structure signature of a system made up of n components having continuous and i.i.d. lifetimes was defined in the eighties by Samaniego as the n-tuple whose k-th coordinate is the probability that the k-th component failure causes the system to fail. More recently, a bivariate version of this concept was considered as follows. The joint structure signature of a pair of systems built on a common set of components having continuous and i.i.d. lifetimes is a square matrix of order n whose (k,l)-entry is the probability that the k-th failure causes the first system to fail and the l-th failure causes the second system to fail. This concept was successfully used to derive a signature-based decomposition of the joint reliability of the two systems. In the first part of this paper we provide an explicit formula to compute the joint structure signature of two or more systems and extend this formula to the general non-i.i.d. case, assuming only that the distribution of the component lifetimes has no ties. We also provide and discuss a necessary and sufficient condition on this distribution for the joint reliability of the systems to have a signature-based decomposition. In the second part of this paper we show how our results can be efficiently applied to the investigation of the reliability and signature of multistate systems made up of two-state components. The key observation is that the structure function of such a multistate system can always be additively decomposed into a sum of classical structure functions. Considering a multistate system then reduces to considering simultaneously several two-state systems.Metalorganic chemical vapour deposition of p-type delafossite CuCrO2 semiconductor thin films: characterization and application to transparent p-n junction
http://hdl.handle.net/10993/31398
Title: Metalorganic chemical vapour deposition of p-type delafossite CuCrO2 semiconductor thin films: characterization and application to transparent p-n junction
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<br/>Author, co-author: Crêpellière, Jonathan Charles
<br/>
<br/>Abstract: Transparent conducting oxides such as ITO, FTO or AZO, are currently used in a number of commercial applications, such as transparent electrodes for flat panel displays, light-emitting diodes and solar cells. These applications rely essentially on n-type conductive materials. The developments towards electronic devices based on transparent p-n junctions have triggered an intense research for the synthesis of p-type transparent conductors with sufficiently high quality. Copper-based delafossite materials are thought to hold one of the highest potential and among them CuCrO2 has exhibited strong potential in terms of trade off electrical conductivity and optical transparency. In this work, we report for the first time on CuCrO2 thin-films, grown using a pulsed injection MOCVD. We particularly highlight the influence of the growth temperature, the volume precursor ration and the oxygen partial pressure on chemical, morphological, structural, electrical and optical properties of the films. Delafossite CuCrO2 thin films are synthesized as low as 310°C on glass substrate, which is the lowest growth temperature reported to our knowledge. The films exhibit a carbon contamination below 1%, an excess of chromium and a p-type conductivity. Electrical conductivity at room temperature is measured as high as 17S.cm-1 with a moderate visible transparency at 50%. We report the highest trade off electrical conductivity and visible transparency of CuCrO2 thin films. We investigate the transport conduction with simultaneous electrical and thermoelectrical measurements and band conduction and small polaron models are controversially discussed. A functional transparent p-n junction CuCrO2/ZnO, based on only two-layers, is synthesized with a visible transparency of 45-50%. The junction shows a typical current-voltage characteristic of a diode, with high series resistance features. The device is efficiently acting as an UV detector.A Liquid Crystal Biosensor for Specific Detection of Antigens
http://hdl.handle.net/10993/31354
Title: A Liquid Crystal Biosensor for Specific Detection of Antigens
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<br/>Author, co-author: Popov, Piotr; Honaker, Lawrence William; Kooijman, Edgar E.; Mann, Elizabeth K.; Jákli, Antal I.
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<br/>Abstract: Following the principle of the enzyme-linked immunosorbent assay (ELISA) pathogen detection method, we demonstrate specific sensing of goat Immunoglobulin G (IgG) by a nematic liquid crystal material. Sensing occurs via the visually-striking realignment of a pre-fabricated liquid crystal film, suspended in grids and coated with biotinylated lipids followed by biotinylated anti-goat IgG. Realignment occurs when the targeted goat IgG is added to the cell, but not when rat or rabbit serum IgG is added to the same surface. In principle, this method can be generalized to provide an inexpensive, fast and sensitive prefabricated sensor for any pathogen.On spectral analysis in varieties containing the solutions of inhomogeneous linear functional equations
http://hdl.handle.net/10993/31288
Title: On spectral analysis in varieties containing the solutions of inhomogeneous linear functional equations
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<br/>Author, co-author: Kiss, Gergely; Vincze, Csaba
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<br/>Abstract: The aim of the paper is to investigate the solutions of special inhomogeneous linear functional equations using spectral analysis in a translation invariant closed linear subspace of additive/multiadditive functions containing the restrictions of the solutions to finitely generated fields. The application of spectral analysis in some related varieties is a new and important trend in the theory of functional equations; especially they have successful applications in the case of homogeneous linear functional equations. The foundations of the theory can be found in Kiss and Varga (Aequat Math 88(1):151–162, 2014) and Kiss and Laczkovich (Aequat Math 89(2):301–328, 2015). We are going to adopt the main theoretical tools to solve some inhomogeneous problems due to Koclȩga-Kulpa and Szostok (Ann Math Sylesianae 22:27–40, 2008), see also Koclȩga-Kulpa and Szostok (Georgian Math J 16:725–736, 2009; Acta Math Hung 130(4):340–348, 2011). They are motivated by quadrature rules of approximate integration.On spectral synthesis in varieties containing the solutions of inhomogeneous linear functional equations
http://hdl.handle.net/10993/31287
Title: On spectral synthesis in varieties containing the solutions of inhomogeneous linear functional equations
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<br/>Author, co-author: Kiss, Gergely; Vincze, Csaba
<br/>
<br/>Abstract: As a continuation of our previous work [2] the aim of the recent paper is to investigate the solutions of special inhomogeneous linear functional equations by using spectral synthesis in translation invariant closed linear subspaces of additive/multiadditive functions containing the restrictions of the solutions to finitely generated fields. The idea is based on the fundamental work of [5]. Using spectral analysis in some related varieties we can prove the existence of special solutions (automorphisms) of the functional equation but spectral synthesis allows us to describe the entire space of solutions on a large class of finitely generated fields. It is spanned by the so-called exponential monomials which can be given in terms of automorphisms of CC and differential operators. We apply the general theory to some inhomogeneous problems motivated by quadrature rules of approximate integration [8], see also [7, 9].Simultaneous observation of gravity tide in Juneau, Southeast Alaska with gPhone#32 and L&R G578 gravimeters
http://hdl.handle.net/10993/31267
Title: Simultaneous observation of gravity tide in Juneau, Southeast Alaska with gPhone#32 and L&R G578 gravimeters
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<br/>Author, co-author: Sato, T.; Miura, S.; Ohta, Y.; Inazu, D.; Fujimoto, H.; Francis, OlivierLong-Range Repulsion Between Spatially Confined van der Waals Dimers
http://hdl.handle.net/10993/31266
Title: Long-Range Repulsion Between Spatially Confined van der Waals Dimers
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<br/>Author, co-author: Sadhukhan, Mainak; Tkatchenko, Alexandre
<br/>
<br/>Abstract: It is an undisputed textbook fact that nonretarded van der Waals (vdW) interactions between isotropic
dimers are attractive, regardless of the polarizability of the interacting systems or spatial dimensionality. The universality of vdW attraction is attributed to the dipolar coupling between fluctuating electron charge densities. Here, we demonstrate that the long-range interaction between spatially confined vdW dimers becomes repulsive when accounting for the full Coulomb interaction between charge fluctuations. Our analytic results are obtained by using the Coulomb potential as a perturbation over dipole-correlated states for two quantum harmonic oscillators embedded in spaces with reduced dimensionality; however, the long-range repulsion is expected to be a general phenomenon for spatially confined quantum systems. We suggest optical experiments to test our predictions, analyze their relevance in the context of intermolecular interactions in nanoscale environments, and rationalize the recent observation of anomalously strong screening of the lateral vdW interactions between aromatic hydrocarbons adsorbed on metal surfaces.Ab initio calculation of the G peak intensity of graphene: Laser-energy and Fermi-energy dependence and importance of quantum interference effects
http://hdl.handle.net/10993/31247
Title: Ab initio calculation of the G peak intensity of graphene: Laser-energy and Fermi-energy dependence and importance of quantum interference effects
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<br/>Author, co-author: Reichardt, Sven; Wirtz, LudgerQuantum Interference Effects in Resonant Raman Spectroscopy of Single- and Triple-Layer MoTe2 from First-Principles
http://hdl.handle.net/10993/31246
Title: Quantum Interference Effects in Resonant Raman Spectroscopy of Single- and Triple-Layer MoTe2 from First-Principles
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<br/>Author, co-author: Pereira Coutada Miranda, Henrique; Reichardt, Sven; Froehlicher, Guillaume; Molina-Sanchez, Alejandro; Berciaud, Stéphane; Wirtz, LudgerEspaces Verts Urbains et Carbone
http://hdl.handle.net/10993/31212
Title: Espaces Verts Urbains et Carbone
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<br/>Author, co-author: Boura, Marlène Delphine FabienneInitial-irregular oblique derivative problems for nonlinear parabolic complex equations of second order with measurable coefficients
http://hdl.handle.net/10993/31204
Title: Initial-irregular oblique derivative problems for nonlinear parabolic complex equations of second order with measurable coefficients
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<br/>Author, co-author: Wen, Guochun; Zou, Benteng
<br/>
<br/>Abstract: In this paper, initial-irregular oblique derivative boundary value problems for
nonlinear and non-divergence parabolic complex equations of second order in multiply
connected domains are discussed, where coefficients of equations are measurable. Firstly,
the uniqueness of solutions for the above problems is verified, and then a priori estimates
of solutions for the problems are given. Finally, by using the above estimates and
the Leray-Schauder theorem, the existence of solutions of the initial-boundary value
problems is proved.Similarities and Differences Between the Vertex Cover Number and the Weakly Connected Domination Number of a Graph
http://hdl.handle.net/10993/31192
Title: Similarities and Differences Between the Vertex Cover Number and the Weakly Connected Domination Number of a Graph
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<br/>Author, co-author: Lemanska, Magdalena; Rodríguez-Velázquez, Alberto; Trujillo Rasua, RolandoPowder diffraction and crystal structure prediction identify four new coumarin polymorphs
http://hdl.handle.net/10993/31179
Title: Powder diffraction and crystal structure prediction identify four new coumarin polymorphs
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<br/>Author, co-author: Shtukenberg, Alexander G.; Zhu, Qiang; Carter, Damien J.; Vogt, Leslie; Hoja, Johannes; Schneider, Elia; Song, Hongxing; Pokroy, Boaz; Polishchuk, Iryna; Tkatchenko, Alexandre; Oganov, Artem R.; Rohl, Andrew L.; Tuckerman, Mark E.; Kahr, Bart
<br/>
<br/>Abstract: Coumarin, a simple, commodity chemical isolated from beans in 1820, has, to date, only yielded one solid state structure. Here, we report a rich polymorphism of coumarin grown from the melt. Four new metastable forms were identified and their crystal structures were solved using a combination of computational crystal structure prediction algorithms and X-ray powder diffraction. With five crystal structures, coumarin has become one of the few rigid molecules showing extensive polymorphism at ambient conditions. We demonstrate the crucial role of advanced electronic structure calculations including many-body dispersion effects for accurate ranking of the stability of coumarin polymorphs and the need to account for anharmonic vibrational contributions to their free energy. As such, coumarin is a model system for studying weak intermolecular interactions, crystallization mechanisms, and kinetic effects.