Anisotropic 3-bit Metasurfaces with Combined Modules with Rotation Symmetry for Wideband RCS Reduction

2021 ◽  
Author(s):  
Andrey I. Semenikhin ◽  
Diana V. Semenikhina
Keyword(s):  
Rotation Symmetry

scholarly journals Chiralities of nodal points along high-symmetry lines with screw rotation symmetry

2021 ◽  
Vol 103 (23) ◽  
Author(s):  
Rafael González-Hernández ◽  
Erick Tuiran ◽  
Bernardo Uribe
Keyword(s):  
High Symmetry ◽  
Rotation Symmetry ◽  
Nodal Points

N,N′-Bis(4-methylphenyl)-3-oxapentanediamide

2006 ◽  
Vol 62 (5) ◽  
pp. o1861-o1862
Author(s):  
Yong-Hong Wen ◽  
Hui-Ling Wen ◽  
Xue-Mei Li ◽  
Shu-Sheng Zhang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Rotation Symmetry ◽  
Compound C

The title compound, C18H20N2O3, has twofold rotation symmetry. Molecules are linked into ribbons along the c axis by N—H...O and C—H...O hydrogen bonds.

High-pressure synthesis and crystal structure of the strontium tungstate Sr3W2O9

2018 ◽  
Vol 74 (2) ◽  
pp. 120-124 ◽  
Author(s):  
Daisuke Urushihara ◽  
Toru Asaka ◽  
Koichiro Fukuda ◽  
Hiroya Sakurai
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Pressure Phase ◽  
X Ray Diffraction ◽  
Rotation Symmetry ◽  
Synthesis And Crystal Structure ◽  
High Pressure Synthesis ◽  
Transmission Electron ◽  
Pressure Synthesis ◽  
Pressure Phase

The strontium tungstate compound Sr3W2O9 was prepared by a high-pressure synthesis technique. The crystal structure was determined by single-crystal X-ray diffraction and transmission electron microscopy. The structure was found to be a hettotype structure of the high-pressure phase of Ba3W2O9, which has corner-sharing octahedra with a trigonal symmetry. Sr3W2O9 has a monoclinic unit cell of C2/c symmetry. One characteristic of the structure is the breaking of the threefold rotation symmetry existing in the high-pressure phase of Ba3W2O9. The substitution of Sr at the Ba site results in a significant shortening of the interlayer distances of the [AO3] layers (A = Ba, Sr) and causes a distortion in the crystal structure. In Sr3W2O9, there is an off-centre displacement of W6+ ions in the WO6 octahedra. Such a displacement is also observed in the high-pressure phase of Ba3W2O9.

CHIRAL ORDER IN SPIN GLASSES

1996 ◽  
Vol 07 (03) ◽  
pp. 345-353 ◽  
Author(s):  
HIKARU KAWAMURA
Keyword(s):  
Numerical Simulations ◽  
Spin Glass ◽  
Spin Glasses ◽  
Spin Rotation ◽  
Reflection Symmetry ◽  
The Novel ◽  
Glass Transitions ◽  
Rotation Symmetry ◽  
Numerical Evidence ◽  
Chiral Glass

The results of the recent numerical simulations on vector spin glasses are presented. Numerical evidence of the novel chiral-glass state, accompanied with broken spin-reflection symmetry with preserving spin-rotation symmetry, is presented. Implication to experiments on spin-glass transitions is discussed.

Oxygen Evolution Reaction on Perovskite Electrocatalysts with Localized Spins and Orbital Rotation Symmetry

ChemCatChem ◽  
2016 ◽  
Vol 8 (24) ◽  
pp. 3762-3768 ◽  
Author(s):  
Ryan Sharpe ◽  
Tingbin Lim ◽  
Yunzhe Jiao ◽  
J. W. Hans Niemantsverdriet ◽  
Jose Gracia
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Rotation Symmetry ◽  
Orbital Rotation

scholarly journals Crystal structure of (1E,1′E)-N,N′-(ethane-1,2-diyl)bis[(pyridin-2-yl)methanimine]

2015 ◽  
Vol 71 (6) ◽  
pp. o431-o431 ◽  
Author(s):  
Muneer Abdoh ◽  
Ismail Warad ◽  
S. Naveen ◽  
N. K. Lokanath ◽  
Rachid Salghi
Keyword(s):  
Crystal Structure ◽  
Intermolecular Interactions ◽  
Title Compound ◽  
Rotation Symmetry ◽  
Twofold Axis ◽  
Compound C

The whole molecule of the title compound, C14H14N4, is generated by twofold rotation symmetry. The twofold axis bisects the central –CH2-CH2– bond and the planes of the pyridine rings are inclined to one another by 65.60 (7)°. In the crystal, there are no significant intermolecular interactions present.

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