Results 51 to 60 of about 147,425 (281)

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Will urban air mobility fly? The efficiency and distributional impacts of UAM in different urban spatial structures

Social Science Research Network, 2021
Recent technological developments open up possibilities for introducing a vast number of novel mobility concepts in urban environments. One of these new concepts is urban air mobility (UAM).
A. Straubinger, E. Verhoef, H. Groot
semanticscholar   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

SUPERSTRINGS AND SUPERMEMBRANES IN THE DOUBLY SUPERSYMMETRIC GEOMETRICAL APPROACH [PDF]

, 1995
We perform a generalization of the geometrical approach to describing extended objects for studying the doubly supersymmetric twistor--like formulation of super--p--branes.
Achucarro, Achucarro, Akulov, Akulov, Akulov, Aoyama, Balachandran, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Bandos, Barabashov, Barcelos-Neto, Bengtsson, Bengtsson, Bergshoeff, Bergshoeff, Bergshoeff, Berkovits, Berkovits, Berkovits, Berkovits, Berkovits, Berkovits, Bordemann, Bordemann, Brooks, Brooks, Callan, Callan, Castellani, Cederwall, Chikalov, D'Auria, D'Auria, De Azcarraga, Delduc, Delduc, Delduc, Dirac, Dmitrij Sorokin, Dmitrij V. Volkov, Dragon, Duff, Duff, Duff, Duff, Duff, Duff, Eisenberg, Ferber, Fisch, Galperin, Galperin, Galperin, Galperin, Galperin, Galperin, Galperin, Gates, Green, Green, Grimm, Hoppe, Hoppe, Horowitz, Howe, Howe, Howe, Hughes, Igor A. Bandos, Ivanov, Kallosh, Kallosh, Karlhede, Kavalov, Kowalski-Glikman, Kowalski-Glikman, Lindström, Lund, Mario Tonin, Nambu, Ne'eman, Ne'eman, Newman, Nissimov, Nissimov, Nissimov, Nissimov, Nissimov, Nissimov, Omnes, Paolo Pasti, Pashnev, Pasti, Penrose, Penrose, Penrose, Penrose, Plyushchay, Polyakov, Schirafuji, Sezgin, Siegel, Sohnius, Sokatchev, Sokatchev, Sorokin, Sorokin, Sorokin, Strominger, Tonin, Tonin, Townsend, Townsend, Volkov, Volkov, Volkov, Volkov, Wess, Wess, Wiegmann, Zheltukhin, Zheltukhin, Zheltukhin, Zheltukhin, Zheltukhin, Zupnik   +145 more
core   +2 more sources

Acceptance, Safety and Sustainability Recommendations for Efficient Deployment of UAM - Outline of H2020 CSA Project

IOP Conference Series: Materials Science and Engineering, 2022
The vision of a third dimension added to hitherto nearly flat urban/metropolitan transport system gained the potential to become a mobility revolution for both logistics operators and, in the near future, for passengers as well.
B. Dziugieł, A. Mazur, A. Stanczyk, M. Maczka, A. Liberacki, V. Di Vito, A. Menichino, S. Melo, J. T. Ten Thije, H. Hesselink, J. Vreeken, Michele Giannuzzi, G. Duca, R. Russo, A. Witkowska-Konieczny   +14 more
semanticscholar   +1 more source

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

Capacity modelling for UAM

Drone Systems and Applications
The management of the operation of unmanned aircraft systems and their integration into the common airspace faces various challenges, among which those associated with determining the airspace capacity can also be included. This paper focuses on this challenge and proposes an approach to determine the airspace capacity through the utilization of ...
Adam Kleczatský, Jakub Kraus
openaire   +2 more sources

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Entwicklungsstufen des Unternehmensarchitekturmanagements [PDF]

, 2018
Zusammenfassungen: Je nach Ausgestaltung kann Unternehmensarchitekturmanagement (UAM) eine wichtige Komponente des strategischen IT-Managements bilden — oder auch nicht.
Aier, Stephan, Winter, Robert, Wortmann, Felix   +2 more
core  

The dynamics of 1D Bloch electrons in constant electric fields

, 2004
We study the dynamics of a 1D Bloch electron subjected to a constant electric field. The periodic potential is supposed to be less singular than the $\delta $-like potential (Dirac comb). We give a rigorous proof of Ao's result \cite{Ao} that for a large
Bentosela, F., Duclos, P., Moldoveanu, V., Nenciu, G.   +3 more
core   +1 more source