Results 11 to 20 of about 325,988 (297)

Edge Detection on Hexagonal Structure [PDF]

open access: yesJournal of Algorithms & Computational Technology, 2008
Gradient-based edge detection is a straightforward method to identify the edge points in the original grey-level image. It is intuitive that in the human vision system the edge points always appear where the grey-level value is greatly changed.
Xiangjian He   +3 more
doaj   +2 more sources

Hexagonal Structure of Baby Skyrmion Lattices [PDF]

open access: yesPhysical Review D, 2008
We study the zero-temperature crystalline structure of baby Skyrmions by applying a full-field numerical minimization algorithm to baby Skyrmions placed inside different parallelogramic unit-cells and imposing periodic boundary conditions.
A. A. Belavin   +6 more
core   +2 more sources

Hexagonal structure for intelligent vision [PDF]

open access: yes2005 International Conference on Information and Communication Technologies, 2005
Using hexagonal grids to represent digital images have been studied for more than 40 years. Increased processing capabilities of graphic devices and recent improvements in CCD technology have made hexagonal sampling attractive for practical applications ...
He, X, Jia, W
core   +2 more sources

Basic transformations on virtual hexagonal structure [PDF]

open access: yesInternational Conference on Computer Graphics, Imaging and Visualisation (CGIV'06), 2006
Hexagonal structure is different from the traditional square structure for image representation. The geometrical arrangement of pixels on hexagonal structure can be described in terms of a hexagonal grid.
He, X   +6 more
core   +2 more sources

Structural domain walls in polar hexagonal manganites [PDF]

open access: yesNature Communications, 2013
We present a microscopic first-principles study of the neutral structural domain walls (DWs) in the multiferroic hexagonal manganites, which have been shown to exhibit cross-couplings between ferroelectricity and struc- tural antiphase. We find that, in contradiction with previously proposed models, the interlocked antiphase- ferroelectric domain walls
Y. Kumagay, N.A. Spaldin
openaire   +3 more sources

Natural hyperbolicity in layered hexagonal crystal structures [PDF]

open access: yesPhysical Review B, 2021
Discovering the physical requirements for meeting the indefinite permittivity in natural material as well as proposing a new natural hyperbolic media offer a possible route to significantly improve our knowledge and ability to confine and controlling light in optoelectronic devices.
Ebrahimian, Ali, Asgari, Reza
openaire   +2 more sources

Hexagonal Rare Earth-Iron Mixed Oxides (REFeO3): Crystal Structure, Synthesis, and Catalytic Properties

open access: yesFrontiers in Chemistry, 2019
The rare earth-iron mixed oxide (REFeO3) is an attractive material in fields such as electronic, magnetic, and catalytic research. Generally, orthorhombic REFeO3 (o-REFeO3) with a perovskite structure is better known than hexagonal REFeO3 (h-REFeO3 ...
Saburo Hosokawa, Saburo Hosokawa
doaj   +1 more source

Embedded atoms in a crystalline hexagonal structure

open access: yesХімія, фізика та технологія поверхні, 2023
As part of the work, the hexagonal structure of B19 type metals as hydrogen sorbents will be considered. That is, crystal lattices are considered, where atoms of impurities (hydrogen) are introduced into the interstices of the metal.
Z. A. Matysina   +9 more
doaj   +1 more source

Tuning the Magnetic Ordering Temperature of Hexagonal Ferrites by Structural Distortion Control [PDF]

open access: yes, 2018
To tune the magnetic properties of hexagonal ferrites, a family of magnetoelectric multiferroic materials, by atomic-scale structural engineering, we studied the effect of structural distortion on the magnetic ordering temperature (TN).
Cao, Huibo   +11 more
core   +4 more sources

Structure of hexagonal ζ´-AlMnCo

open access: yesJournal of Physics: Conference Series, 2023
Abstract The structure of ζ´-Al80Mn16Co4 was analyzed using single-crystal X-ray diffraction. The diffraction pattern indicated that the ζ´-AlMnCo phase has a hexagonal unit cell with a space group P63/m, a = 30.5173(5) Å, c = 12.4742(2) Å, and the a-axis is
Yuki Makino   +2 more
openaire   +1 more source

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