Results 1 to 10 of about 346,266 (186)
Topological Nanophotonic Wavelength Router Based on Topology Optimization [PDF]
Micromachines, 2021 The topological nanophotonic wavelength router, which can steer light with different wavelength signals into different topological channels, plays a key role in optical information processing. However, no effective method has been found to realize such a topological nanophotonic device.
Hongyi Yuan +5 more
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Topological insulators-based magnetic heterostructures [PDF]
Advances in Physics: X, 2021 The combination of magnetism and topology in magnetic topological insulators (MTIs) has led to unprecedented advancements of time reversal symmetry-breaking topological quantum physics in the past decade. Compared with the uniform films, the MTI heterostructures provide a better framework to manipulate the spin-orbit coupling and spin properties.
Qi Yao +4 more
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Liquid-crystal-based topological photonics [PDF]
Proceedings of the National Academy of Sciences, 2021 SignificanceLiquid crystals are complex fluids that combine a unique ability to manipulate light with the reconfigurability of soft materials. They are at the core of modern display technology. Here, we suggest that nematic liquid crystals can also be used as building blocks of topological materials key to realize protected unidirectional waveguides ...
Abbaszadeh, H. +3 more
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$P$-bases and topological groups [PDF]
Proceedings of the American Mathematical Society, 2021 A topological space $X$ is defined to have a neighborhood $P$-base at any $x\in X$ from some poset $P$ if there exists a neighborhood base $(U_p[x])_{p\in P}$ at $x$ such that $U_p[x]\subseteq U_{p'}[x]$ for all $p\geq p'$ in $P$. We prove that a compact space is countable, hence metrizable, if it has countable scattered height and a $\mathcal{K}(M ...
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Topology-based Sparsification of Graph Annotations [PDF]
Bioinformatics, 2020 AbstractSince the amount of published biological sequencing data is growing exponentially, efficient methods for storing and indexing this data are more needed than ever to truly benefit from this invaluable resource for biomedical research. Labeled de Bruijn graphs are a frequently-used approach for representing large sets of sequencing data.
Daniel Danciu +4 more
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Partitioning bases of topological spaces [PDF]
Electronic Notes in Discrete Mathematics, 2013 We investigate whether an arbitrary base for a dense-in-itself topological space can be partitioned into two bases. We prove that every base for a T_3 Lindel f topology can be partitioned into two bases while there exists a consistent example of a first countable, 0-dimensional, Hausdorff space of size continuum and weight _1 which admits a point ...
Soukup, Dániel Tamás, Soukup, Lajos
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Omnidirectional Vision Based Topological Navigation [PDF]
International Journal of Computer Vision, 2007 In this work we present a novel system for autonomous mobile robot navigation. With only an omnidirectional camera as sensor, this system is able to build automatically and robustly accurate topologically organised environment maps of a complex, natural environment.
Goedemé, Toon +3 more
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Wake Structures and Surface Patterns of the DrivAer Notchback Car Model under Side Wind Conditions [PDF]
, 2020 The flow field topology of passenger cars considerably changes under side wind conditions. This changes the surface pressure, aerodynamic force, and drag and performance of a vehicle.
Nayeri, Christian Navid +2 more
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Topological-insulator-based terahertz modulator [PDF]
Scientific Reports, 2017 AbstractThree dimensional topological insulators, as a new phase of quantum matters, are characterized by an insulating gap in the bulk and a metallic state on the surface. Particularly, most of the topological insulators have narrow band gaps, and hence have promising applications in the area of terahertz optoelectronics.
X. B. Wang +7 more
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A universal approach to coverage probability and throughput analysis for cellular networks [PDF]
, 2015 This paper proposes a novel tractable approach for accurately analyzing both the coverage probability and the achievable throughput of cellular networks.
Chen, Sheng +4 more
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