Results 21 to 30 of about 236,638 (182)

Engineering Chemisorption of Fe4 Single‐Molecule Magnets on Gold

open access: yesAdvanced Materials Interfaces, 2021
Gaining control over the grafting geometry is critically important for any application of surface‐supported single‐molecule magnets (SMMs) in data storage, spintronics, and quantum information science.
Lorenzo Poggini   +21 more
doaj   +1 more source

Incidences between points and lines in three dimensions [PDF]

open access: yes, 2015
We give a fairly elementary and simple proof that shows that the number of incidences between $m$ points and $n$ lines in ${\mathbb R}^3$, so that no plane contains more than $s$ lines, is $$ O\left(m^{1/2}n^{3/4}+ m^{2/3}n^{1/3}s^{1/3} + m + n\right) $$
Sharir, Micha, Solomon, Noam
core   +3 more sources

Quantification of finite-temperature effects on adsorption geometries of $\pi$-conjugated molecules [PDF]

open access: yes, 2013
The adsorption structure of the molecular switch azobenzene on Ag(111) is investigated by a combination of normal incidence x-ray standing waves and dispersion-corrected density functional theory. The inclusion of non-local collective substrate response (
Hagen, S.   +10 more
core   +3 more sources

Polynomial effective equidistribution

open access: yesComptes Rendus. Mathématique, 2023
We prove effective equidistribution theorems, with polynomial error rate, for orbits of the unipotent subgroups of $\mathrm{SL}_2(\mathfrak{l})$ in arithmetic quotients of $\mathrm{SL}_2(\mathbb{C})$ and $\mathrm{SL}_2(\mathfrak{l})\times \mathrm{SL}_2 ...
Lindenstrauss, Elon   +2 more
doaj   +1 more source

Research on influence of special-shaped honeycomb radar absorbing structure for wide-band absorbing design

open access: yesThe Journal of Engineering, 2019
To realise wide-band stealth of radar absorbing material, a special-shaped honeycomb radar absorbing structure within nested cone-shaped scattering configuration is designed.
Wang Ming-liang   +9 more
doaj   +1 more source

Convex subspaces of Lie incidence geometries

open access: yesCombinatorial Theory, 2022
Let \(\Gamma\) be a hexagonic Lie incidence structure, e.g.\ a long root geometry of a (thick irreducible) spherical Tits building; compare \textit{E. E. Shult} [Points and lines. Characterizing the classical geometries. Berlin: Springer (2011; Zbl 1213.51001)]. The authors classify all convex subspaces of \(\Gamma\) under the assumption that \(\Gamma\)
Meulewaeter, Jeroen   +1 more
openaire   +4 more sources

Double Sided Band-pass Frequency Selective Surface Based on Matryoshka Geometry [PDF]

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper describes the development of a double-sided band-pass frequency selective surface based on Matryoshka geometry, preserving features such as miniaturization, multiband operation and stability of polarization and angle of incidence.
Marina de O. Alencar   +3 more
doaj   +1 more source

A New Approach for Deviation Modeling in Compressors: Sensitivity-Correlated Principal Component Analysis

open access: yesAerospace, 2023
Studies on the geometry variation-related compressor uncertainty quantification (UQ) have often used dimension reduction methods, such as the principal component analysis (PCA), for the modeling of deviations.
Mingzhi Li   +4 more
doaj   +1 more source

Theoretical model for the transmittance in a left-handed metamaterial of different geometries [PDF]

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2023
In this work, a theoretical model for the transmittance in a left-handed metamaterial of different geometries is presented. The proposed unit cells are a combination of conducting wires of rectangular cross-section with square-ring and hexagonal ...
Héctor Lorduy G, Ángel Salazar
doaj   +1 more source

Factorizations in Geometric Lattices

open access: yesAxioms
This article investigates atomic decompositions in geometric lattices isomorphic to the partition lattice Π(X) of finite set X, a fundamental structure in lattice theory and combinatorics.
Alex Aguila   +2 more
doaj   +1 more source

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