Relevant bibliographies by topics / Isolanti topologici

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Isolanti topologici'

Author: Grafiati
Published: 9 March 2023
Last updated: 11 March 2023

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Journal articles on the topic "Isolanti topologici"

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Aguiar, Giancarlo De França, Bárbara De Cassia Xavier Cassins Aguiar, Humberto De AlencarPizza Silva, Volmir Eugênio Wilhelm, and Helena Maria Wilhelm. "Modelagem de novos nós lógicos baseados na IEC 61850 para aplicação em sistemas de gestão de transformadores de potência." Revista Tecnologia e Sociedade 17, no. 46 (2021): 229. http://dx.doi.org/10.3895/rts.v17n46.11824.

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Este trabalho apresenta o modelamento de dois novos Nós Lógicos para a norma IEC 61850. Estes modelos foram implementados no monitoramento de dois transformadores de transmissão e distribuição para a criação de um sistema de gestão destes ativos, cuja topologia foi elaborada com base na norma IEC 61850. Este trabalho contribui para a revisão do capítulo da norma que versa sobre monitoramento e supervisão de transformadores (IEC 61850-7-4) e inaugura modelos de Diagnostico e Expectativa de sua Vida Útil. A implementação foi realizada na área piloto do projeto (subestação Pilarzinho), de forma e
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Dube, Matthew P. "Deriving topological relations from topologically augmented direction relation matrices." Journal of Spatial Information Science, no. 23 (December 24, 2021): 1–23. http://dx.doi.org/10.5311/josis.2021.23.155.

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Topological relations and direction relations represent two pieces of the qualitative spatial reasoning triumvirate. Researchers have previously attempted to use the direction relation matrix to derive a topological relation, finding that no single direction relation matrix can isolate a particular topological relation. In this paper, the technique of topological augmentation is applied to the same problem, identifying a unique topological relation in 28.6% of all topologically augmented direction relation matrices, and furthermore achieving a reduction in a further 40.4% of topologically augm
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Yuvaraj, Monisha, Asim K. Dey, Vyacheslav Lyubchich, Yulia R. Gel, and H. Vincent Poor. "Topological clustering of multilayer networks." Proceedings of the National Academy of Sciences 118, no. 21 (2021): e2019994118. http://dx.doi.org/10.1073/pnas.2019994118.

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Multilayer networks continue to gain significant attention in many areas of study, particularly due to their high utility in modeling interdependent systems such as critical infrastructures, human brain connectome, and socioenvironmental ecosystems. However, clustering of multilayer networks, especially using the information on higher-order interactions of the system entities, still remains in its infancy. In turn, higher-order connectivity is often the key in such multilayer network applications as developing optimal partitioning of critical infrastructures in order to isolate unhealthy syste
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Dutta, Bivas, Vladimir Umansky, Mitali Banerjee, and Moty Heiblum. "Isolated ballistic non-abelian interface channel." Science 377, no. 6611 (2022): 1198–201. http://dx.doi.org/10.1126/science.abm6571.

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The topological order of a quantum Hall state is mirrored by the gapless edge modes owing to bulk-edge correspondence. The state at the filling of ν = 5/2, predicted to host non-abelian anyons, supports a variety of edge modes (integer, fractional, neutral). To ensure thermal equilibration between the edge modes and thus accurately determine the state’s nature, it is advantageous to isolate the fractional channel (1/2 and neutral modes). In this study, we gapped out the integer modes by interfacing the ν = 5/2 state with integer states ν = 2 and ν = 3 and measured the thermal conductance of th
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Kauth, Christian, Marc Pastre, Jean-Michel Sallese, and Maher Kayal. "System-Level Design Considerations for Carbon Nanotube Electromechanical Resonators." Journal of Sensors 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/384643.

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Despite an evermore complete plethora of complex domain-specific semiempirical models, no succinct recipe for large-scale carbon nanotube electromechanical systems design has been formulated. To combine the benefits of these highly sensitive miniaturized mechanical sensors with the vast functionalities available in electronics, we identify a reduced key parameter set of carbon nanotube properties, nanoelectromechanical system design, and operation that steers the sensor’s performance towards system applications, based on open- and closed-loop topologies. Suspended single-walled carbon nanotube
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Cain, Jeffrey D., Amin Azizi, Matthias Conrad, Sinéad M. Griffin, and Alex Zettl. "Layer-dependent topological phase in a two-dimensional quasicrystal and approximant." Proceedings of the National Academy of Sciences 117, no. 42 (2020): 26135–40. http://dx.doi.org/10.1073/pnas.2015164117.

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The electronic and topological properties of materials are derived from the interplay between crystalline symmetry and dimensionality. Simultaneously introducing “forbidden” symmetries via quasiperiodic ordering with low dimensionality into a material system promises the emergence of new physical phenomena. Here, we isolate a two-dimensional (2D) chalcogenide quasicrystal and approximant, and investigate their electronic and topological properties. The 2D layers of the materials with a composition close to Ta1.6Te, derived from a layered transition metal dichalcogenide, are isolated with stand
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BERGER, ULRICH, JENS BLANCK, and PETTER KRISTIAN KØBER. "Domain representations of spaces of compact subsets." Mathematical Structures in Computer Science 20, no. 2 (2010): 107–26. http://dx.doi.org/10.1017/s096012950999034x.

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We present a method for constructing from a given domain representation of a space X with underlying domain D, a domain representation of a subspace of compact subsets of X where the underlying domain is the Plotkin powerdomain of D. We show that this operation is functorial over a category of domain representations with a natural choice of morphisms. We study the topological properties of the space of representable compact sets and isolate conditions under which all compact subsets of X are representable. Special attention is paid to admissible representations and representations of metric sp
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Chaput, Dominique L., David Bass, Md Mehedi Alam, et al. "The Segment Matters: Probable Reassortment of Tilapia Lake Virus (TiLV) Complicates Phylogenetic Analysis and Inference of Geographical Origin of New Isolate from Bangladesh." Viruses 12, no. 3 (2020): 258. http://dx.doi.org/10.3390/v12030258.

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Tilapia lake virus (TiLV), a negative sense RNA virus with a 10 segment genome, is an emerging threat to tilapia aquaculture worldwide, with outbreaks causing over 90% mortality reported on several continents since 2014. Following a severe tilapia mortality event in July 2017, we confirmed the presence of TiLV in Bangladesh and obtained the near-complete genome of this isolate, BD-2017. Phylogenetic analysis of the concatenated 10 segment coding regions placed BD-2017 in a clade with the two isolates from Thailand, separate from the Israeli and South American isolates. However, phylogenetic an
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Colombari, Boris. "Welded extensions and ribbon restrictions of diagrammatical moves." Journal of Knot Theory and Its Ramifications 30, no. 02 (2021): 2150008. http://dx.doi.org/10.1142/s0218216521500085.

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In this paper, we consider local moves on classical and welded diagrams of string links, and the notion of welded extension of a classical move. Such extensions being non-unique in general, the idea is to find a topological criterion which could isolate one extension from the others. To that end, we turn to the relation between welded string links and knotted surfaces in [Formula: see text], and the ribbon subclass of these surfaces. This provides a topological interpretation of classical local moves as surgeries on surfaces, and of virtual local moves as surgeries on ribbon surfaces. Comparin
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Yang, Jianting, Kongyang Zhao, Muzi Li, Zhu Xu, and Zhilin Li. "Identifying Complex Junctions in a Road Network." ISPRS International Journal of Geo-Information 10, no. 1 (2020): 4. http://dx.doi.org/10.3390/ijgi10010004.

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Automated generalization of road network data is of great concern to the map generalization community because of the importance of road data and the difficulty involved. Complex junctions are where roads meet and join in a complicated way and identifying them is a key issue in road network generalization. In addition to their structural complexity, complex junctions don’t have regular geometric boundary and their representation in spatial data is scale-dependent. All these together make them hard to identify. Existing methods use geometric and topological statistics to characterize and identif
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Dissertations / Theses on the topic "Isolanti topologici"

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LONGO, EMANUELE MARIA. "HETEROSTRUCTURES BASED ON THE LARGE-AREA Sb2Te3 TOPOLOGICAL INSULATOR FOR SPIN-CHARGE CONVERSION." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/311358.

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I dispositivi elettronici che sfruttano proprietà legate allo spin elettronico costituiscono un settore molto promettente per lo sviluppo della nanoelettronica del futuro. Recentemente, gli isolanti topologici tridimensionali (IT-3D), quando posti a contatto con materiali ferromagnetici (FM), giocano un ruolo centrale nel contesto del miglioramento dell’efficienza di conversione tra spin e carica elettronici in eterostrutture di tipo FM/TI. L’oggetto principale di questa tesi è lo studio delle interazioni chimico-fisiche tra l’IT-3D Sb2Te3, nelle sue forme granulare ed epitassiale, con film di
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Fruchart, Michel. "Topological phases of periodically driven crystals." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEN025/document.

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Cette thèse a pour but de développer et d'utiliser un cadre cohérent permettant de caractériser les phases topologiques dans des milieux spatialement périodiques induites par une perturbation dépendant périodiquement du temps ("phases topologiques de Floquet" ou "isolants topologiques de Floquet"), en présence de symétries. Ces phases sont des généralisation des isolants topologiques apparues lors de l'étude d'isolants topologiques induits par la lumière ainsi que d'analogues ondulatoires des isolants topologiques (en acoustique, mécanique et optique). De nouveaux invariants topologiques carac
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Repellin, Cécile. "Numerical study of fractional topological insulators." Thesis, Paris, Ecole normale supérieure, 2015. http://www.theses.fr/2015ENSU0028/document.

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Les isolants topologiques sont des isolants qui ne peuvent être différenciés des isolants atomiques que par une grandeur physique non locale appelée invariant topologique. L'effet Hall quantique et son équivalent sans champ magnétique l'isolant de Chern sont des exemples d'isolants topologiques. En présence d'interactions fortes, des excitations exotiques appelées anyons peuvent apparaître dans les isolants topologiques. L'effet Hall quantique fractionnaire (EHQF) est la seule réalisation expérimentale connue de ces phases. Dans ce manuscrit, nous étudions numériquement les conditions d'émerge
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Le, calvez Kévin. "Signatures of a 4pi periodic Andreev bound state in topological Josephson junctions." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY099/document.

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Les isolants topologiques 3D sont un nouvel état de la matière décrit par un volume iso-lant électriquement et recouvert par des états de surface métalliques. Une jonction Joseph-son topologique (TJJ) formée autour de ces états de surface peut théoriquement contenirun mode lié d’Andreev ayant une périodicité doublée par rapport aux modes liés d’An-dreev conventionnels 2p périodiques. Le mode d’Andreev 4p périodique serait la briqueélémentaire de l’ordinateur quantique topologique. Ainsi, nous étudions la dynamique dece mode particulier lors de mesures de Shapiro sur des jonctions Josephson fab
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Bègue, Frédéric. "Isolants topologiques et magnétisme." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30392/document.

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La découverte de l'effet Hall quantique par von Klitzing en 1980 a ouvert la voie à ce qui sera connu plus tard comme la théorie topologique des bandes. Dans le cadre de cette théorie, on ne s'intéresse plus uniquement à la relation de dispersion énergétique des électrons dans les cristaux, mais aussi à l'organisation topologique de la structure de bande. Cette théorie a permis la découverte d'une nouvelle phase de la matière, représentée par les isolants topologiques. Ces isolants topologiques ont de particulier qu'ils se comportent comme des isolants normaux dans le bulk, mais présentent des
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Rocha, Leandro Seixas. "Estrutura eletrônica de isolantes topológicos em duas e três dimensões." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-16102014-092038/.

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Nessa tese de doutorado apresentamos um estudo da estrutura eletronica de materiais isolantes topologicos. A teoria fundamental dos isolantes topologicos foi abordada atraves de invariantes topologicos Z2, assim como os seus metodos para o calculo desses invariantes topologicos e as consequencias da topologia de bandas nao-trivial. Assim como as propriedades atomisticas e energeticas, as propriedades eletronicas de alguns isolantes topologicos foram calculadas atraves de metodos de primeiros principios baseados na Teoria do Funcional da Densidade. Apresentamos nessa tese o estudo de quatro sis
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Marcinkiewicz, Michal. "Terahertz Spectroscopy of Topological Phase Transitions in HgCdTe-based systems." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS068/document.

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Cette thèse porte sur l'exploration de différentes phases topologiques présentes dans des hétérostructures à base de mercure, cadmium et tellure (HgCdTe). Ces systèmes sont de parfaits cas d'études des états topologiques dans la matière condensée. En effet, leur structure de bande peut aisément être modifiée d'inversée à non-inversée par le biais de paramètres internes ou externes.Lorsqu'un système présente une structure de bande inversée, il a une topologie non triviale. Il est impossible de modifier cet ordre topologique sans fermer son gap, ce qui inévitablement entraîne l'apparition de par
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Hijano, Cubelos Oliver. "Hétérostructures supraconductrices et isolants topologiques." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS247/document.

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La thèse porte sur l'étude théorique des propriétés électroniques à la surface de l’oxyde de métal de transition SrTiO3. Ce matériau est la pierre angulaire de l'électronique des oxydes, un nouveau domaine de recherche qui a pour but d'enquêter sur les oxydes de métaux de transition en tant que candidats post-silicium pour une émergence future de nouveaux composants électroniques. Le SrTiO3 est en soi un système étonnant : dans sa plus pure composition chimique, c’est un bon isolant avec une large bande interdite. Cependant, en le dopant avec de petites quantités d'autres éléments, il se trans
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Thomas, Candice. "Strained HgTe/CdTe topological insulators, toward spintronic applications." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY090/document.

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Les isolants topologiques constituent une nouvelle classe de matériaux caractérisés par l'association d'un volume isolant et de surfaces conductrices. Avec des propriétés électroniques similaires au graphene, notamment un transport régit par des particules à énergie de dispersion linéaire couramment appelés fermions de Dirac ainsi qu'une protection topologique empêchant tout phénomène de rétrodiffusion, ces matériaux suscitent un intérêt grandissant dans la quête d'une électronique de faible consommation. En effet, la production de courants de spin non-dissipatifs et polarisés ainsi que la for
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Ghelli, Greta. "Topological phases in spin ladders." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17050/.

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Questa tesi si occupa di approfondire lo studio di possibili fasi topologiche in un sistema costituito da due catene di spin caratterizzate entrambe da un'interazione alternata forte e debole. Infatti è interessante capire se questo tipo di interazione può portare a termini topologici non nulli nella funzione di partizione, termini che invece sono assenti per due catene accoppiate quando l'interazione tra spin vicini è sempre la stessa. Quello che si scopre dal punto di vista analitico è che, quando l'interazione su una catena è traslata di un sito rispetto a quella sull'altra catena, il nost
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Conference papers on the topic "Isolanti topologici"

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Kim, H. A., M. A. Allen, D. H. Ditto, and J. A. Wickert. "Development Process to Optimize and Quantify Effectiveness of Differential Crowning™ for Noise Reduction in Drivetrains." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14422.

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Abstract Noise and vibration are undesirable side effects associated with the use of spur gears in drivetrains. With market pressures for higher power densities, the development of high performance drivetrains with reduced noise and vibration thresholds forms a generic problem in the power transmission and gearing fields. In this paper, a process to reduce mesh stiffness variation in a spur gear set through the use of Differential Crowning™ technology, with concomitant reductions in acoustic noise and structure borne vibration, is presented. Through certain topological modifications to the pro
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