Results 21 to 30 of about 362,217 (292)
Surface states of topological insulators [PDF]
Physical Review B, 2012 We develop an effective bulk model with a topological boundary condition to study the surface states of topological insulators. We find that the Dirac point energy, the band curvature and the spin texture of surface states are crystal face-dependent. For a given face on a sphere, the Dirac point energy is determined by the bulk physics that breaks p-h ...
Kane, Charles L +2 more
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Neutral surface topology [PDF]
Ocean Modelling, 2019 Neutral surfaces, along which most of the mixing in the ocean occurs, are notoriously difficult objects: they do not exist as well-defined surfaces, and as such can only be approximated. In a hypothetical ocean where neutral surfaces are well-defined, the in-situ density on the surface is a multivalued function of the pressure on the surface ...
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On the topology of untrapped surfaces [PDF]
Classical and Quantum Gravity, 2009 Recently a simple proof of the generalizations of Hawking's black hole topology theorem and its application to topological black holes for higher dimensional ($n\geq 4$) spacetimes was given \cite{rnew}. By applying the associated new line of argument it is proven here that strictly stable untrapped surfaces do possess exactly the same topological ...
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FRACTAL STRUCTURE OF TITANIUM NITRITE DEPOSITED ON STAINLESS STEEL SUBSTRATE
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014 On the basis of images obtained using scanning tunneling microscope, it was shown that the fractal dimension can be considered as some universal surface characteristic of the titanium nitrite, deposited on stainless steel.
Yu..V. Brylkin
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RELATION BETWEEN FRACTAL DIMENSION AND SURFACE ROUGHNESS FOR THE COPPER SAMPLES [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013 Microscopic characteristics of copper surfaces with different roughness were produced using scanning tunnel microscope and fractal analysis.
Yu.V. Brylkin, A.L. Kusov
doaj
Topology Analysis of Bicycle Rim Brake Pad to Improve Braking Performance
MATEC Web of Conferences, 2018 Various parameters of rubber brake pad tribology will affect the braking performance of a rim brake system of a bicycle. Out of those, three main parameters are contact length of brake pad, surface topology of friction surface, and the thickness of rim ...
Keong Le-Onn, Teoh Choe-Yung
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Multi-legged adaptable crawler capable of maintaining a constant pose locomotion over rugged terrain
Nihon Kikai Gakkai ronbunshu, 2018 In this paper, we introduce practical design and hardware implementation issues of an adaptable crawler mechanism for a mobile robot, enabling it to maintaining its constant desired pose when moving.
Shu TAKAIRA +2 more
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The metric space of geodesic laminations on a surface II: small surfaces [PDF]
, 2005 We continue our investigation of the space of geodesic laminations on a surface, endowed with the Hausdorff topology. We determine the topology of this space for the once-punctured torus and the 4-times-punctured sphere.
Bonahon, Francis, Zhu, Xiaodong
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The Topology of Surface Singularities [PDF]
, 2020 We consider a reduced complex surface germ (X, p). We do not assume that X is normal at p, and so, the singular locus ( Σ, p) of (X, p) could be one dimensional. This text is devoted to the description of the topology of (X, p). By the conic structure theorem (see Milnor, Singular Points of Complex Hypersurfaces, Annals of Mathematical Studies 61 (1968)
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Electrically Tunable Quantum Spin Hall State in Topological Crystalline Insulator Thin films [PDF]
, 2015 Based on a combination of $k \cdot p$ theory, band topology analysis and electronic structure calculations, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators realize the quantum spin Hall phase
Fu, Liang, Liu, Junwei
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