Results 71 to 80 of about 5,068,812 (361)

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi   +6 more
wiley   +1 more source

Products on Maximal Compact Frames

open access: yesRatio Mathematica, 2023
In topological spaces, many topological properties such as separation properties, paracompactness etc. are preserved under the act of taking product of topological spaces.
Jayaprasad P. N.
doaj   +1 more source

A convenient category for directed homotopy [PDF]

open access: yes, 2007
We propose a convenient category for directed homotopy consisting of preordered topological spaces generated by cubes. Its main advantage is that, like the category of topological spaces generated by simplices suggested by J. H.
Fajstrup, L., Rosicky, J.
core   +5 more sources

The fundamental group as a topological group

open access: yes, 2012
This paper is devoted to the study of a natural group topology on the fundamental group which remembers local properties of spaces forgotten by covering space theory and weak homotopy type.
Brazas, Jeremy
core   +1 more source

On topological spaces of orders

open access: yesTopology and its Applications, 2009
AbstractWe study the space of linear orders on a given set X, denoted by Op(X), endowed with the topology of pointwise convergence. We show, in particular, that if |X|=ω1 or |X|=ω0 then Op(X) is homeomorphic to 2ω1 and 2ω0, respectively.
Alexander Arhangel’skii   +1 more
openaire   +2 more sources

ErMn6Sn6: A Promising Kagome Antiferromagnetic Candidate for Room‐Temperature Nernst Effect‐Based Thermoelectrics

open access: yesAdvanced Functional Materials, EarlyView.
This work investigates the Nernst effect in the Kagome magnet ErMn6Sn6 which exhibits both topological and anomalous Nernst effects with the anomalous Nernst coefficient reaching 1.71 µV K⁻¹ at 300 K. This value surpasses that of most canted antiferromagnetic materials, making ErMn6Sn6 a promising candidate for advancing thermoelectric devices based on
Olajumoke Oluwatobiloba Emmanuel   +2 more
wiley   +1 more source

Sierpinski Objects in the Category IVIF-TOP and Its Related Categories IVF-TOP and IF-TOP

open access: yesFuzzy Information and Engineering, 2014
We identify a Sierpinski object in each of the three categories of interval-valued I-fuzzy topological spaces, interval-valued fuzzy topological spaces, and I-fuzzy topological spaces and, among other things, use these to characterize them and their ...
Rana Noor, Arun K. Srivastava
doaj   +1 more source

Arhangel'ski\u{\i} sheaf amalgamations in topological groups

open access: yes, 2016
We consider amalgamation properties of convergent sequences in topological groups and topological vector spaces. The main result of this paper is that, for arbitrary topological groups, Nyikos's property $\alpha_{1.5}$ is equivalent to Arhangel'ski\u{\i}'
Tsaban, Boaz, Zdomskyy, Lyubomyr
core   +1 more source

Neutrosophic generalized b-closed sets in Neutrosophic topological spaces

open access: yesJournal of Physics: Conference Series, 2018
Smarandache introduced and developed the new concept of Neutrosophic set from the Intuitionistic fuzzy sets. A.A. Salama introduced Neutrosophic topological spaces by using the Neutrosophic crisp sets.
C. Maheswari   +2 more
semanticscholar   +1 more source

Off‐Stoichiometry Engineering of the Electrical and Optical Properties of SrNbO3 Using Oxide Molecular Beam Epitaxy

open access: yesAdvanced Functional Materials, EarlyView.
The plasma edge of transparent conducting oxide SrNbO3 shifts from ∼2 eV in the visible range to 1.37 eV in the near‐infrared region by off‐stoichiometry using the vacancy sites as quasi‐substitutional virtual elements. This work advances the stoichiometry engineering of perovskite oxides using oxide molecular beam epitaxy, allowing synthesis beyond ...
Jasnamol Palakkal   +11 more
wiley   +1 more source

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