Results 21 to 30 of about 106,609 (287)

Topological materials or structures: Origin of higher-order topological states

open access: yes, 2023
Higher-order topological states (HOTS) have been extensively investigated in classical wave systems. They do not exist in the band gaps of infinite materials, while exhibit as the in-gap localized modes once the infinite materials are truncated to be the finite structures. Here, we will experimentally reveal the origin of HOTSs in acoustic systems.
Zheng, Shengjie   +3 more
openaire   +2 more sources

Topological Structures Induced by General Fuzzy Automata Based on Lattice-ordered Monoid

open access: yesپژوهش‌های ریاضی, 2021
The fundamental role of algebraic properties in the development of the basics of computer science has led researchers to study the concepts of fuzzy automaton separatedness, connectedness, and reversibility on a large scale.In this paper, the general ...
khadijeh abolpour
doaj  

Curvature-Controlled Topological Defects

open access: yesCrystals, 2017
Effectively, two-dimensional (2D) closed films exhibiting in-plane orientational ordering (ordered shells) might be instrumental for the realization of scaled crystals. In them, ordered shells are expected to play the role of atoms.
Luka Mesarec   +4 more
doaj   +1 more source

Entanglement entropy of (3+1)D topological orders with excitations [PDF]

open access: yes, 2018
Excitations in (3+1)D topologically ordered phases have very rich structures. (3+1)D topological phases support both point-like and string-like excitations, and in particular the loop (closed string) excitations may admit knotted and linked structures ...
He, Huan   +4 more
core   +2 more sources

Atomic-scale characterization of two-dimensional magnets and their heterostructures

open access: yesChemPhysMater, 2023
The realization of long-range magnetic ordering in two-dimensional (2D) van der Waals systems significantly expands the scope of the 2D family as well as their possible spin-related phenomena and device applications.
Yuli Huang   +4 more
doaj   +1 more source

Paraboloidal Crystals [PDF]

open access: yes, 2010
The interplay between order and geometry in soft condensed matter systems is an active field with many striking results and even more open problems. Ordered structures on curved surfaces appear in multi-electron helium bubbles, viral and bacteriophage ...
Bowick, Mark, Giomi, Luca
core   +3 more sources

Atomic layer epitaxy of kagome magnet Fe3Sn2 and Sn-modulated heterostructures

open access: yesAPL Materials, 2022
Magnetic materials with kagome crystal structure exhibit rich physics, such as frustrated magnetism, skyrmion formation, topological flat bands, and Dirac/Weyl points. Until recently, most studies on kagome magnets have been performed on bulk crystals or
Shuyu Cheng   +6 more
doaj   +1 more source

Interactions between spherical nanoparticles optically trapped in Laguerre-Gaussian modes [PDF]

open access: yes, 2005
When a Laguerre-Gaussian (LG) laser mode is used to trap nanoparticles, the spatial disposition of the particles about the beam axis is determined by a secondary mechanism that engages the input radiation with the interparticle potential.
Andrews   +13 more
core   +1 more source

CONTINUOUS ORDER REPRESENTABILITY PROPERTIES OF TOPOLOGICAL SPACES AND ALGEBRAIC STRUCTURES [PDF]

open access: yesJournal of the Korean Mathematical Society, 2012
In the present paper, we study the relationship between con- tinuous order-representability and the fulllment of the usual covering properties on topological spaces. We also consider the case of some al- gebraic structures providing an application of our results to the social choice theory context.
Campion, Maria Jesus   +3 more
openaire   +3 more sources

A Method for Determining the Shape Similarity of Complex Three-Dimensional Structures to Aid Decay Restoration and Digitization Error Correction

open access: yesInformation, 2022
This paper introduces a new method for determining the shape similarity of complex three-dimensional (3D) mesh structures based on extracting a vector of important vertices, ordered according to a matrix of their most important geometrical and ...
Iva Vasic   +4 more
doaj   +1 more source

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