Results 121 to 130 of about 27,519 (287)
Engineering “Meso‐Atom” Bonding: Honeycomb‐Network Transitions in Reticular Liquid Crystals
Aggregate, Volume 6, Issue 4, April 2025.Rod‐like molecules with highly branched carbosilane‐based side‐chains show two modes of aromatic core aggregation controlled by core fluorination. Serving as “meso‐atom bonds,” the locked‐in shift mode due to strong core–core interaction from fluorination replaces the A15‐type 3D cubic liquid crystal network phase by honeycombs with 2D periodicity ...
Christian Anders +8 more
wiley +1 more source
CrystalsEmploying the spin-wave formalism within and beyond the harmonic-oscillator approx-imation, we study the dynamic structure factors of spin-12 nearest-neighbor quantum Heisenberg antiferromagnets on two-dimensional quasiperiodic lattices with particular ...
Shoji Yamamoto, Takashi Inoue
doaj +1 more source
Synthesis of Star-Shaped Boron Carbide Micro-Crystallites under High Pressure and High Temperatures
Crystals, 2018 We synthesized star-shaped pentagonal microcrystals of boron carbide with an extremely low carbon content (~5%), from m-carborane under high pressure (7 GPa) and high temperature (1370⁻1670 K). These crystals have five-fold symmetry and grow in the
Vladimir P. Filonenko +6 more
doaj +1 more source
, 2010 Using molecular simulations, we show that the aperiodic growth of quasicrystals is controlled by the ability of the growing quasicrystal `nucleus' to incorporate kinetically trapped atoms into the solid phase with minimal rearrangement.
Aaron S. Keys +3 more
core +1 more source
Previously unknown quasicrystal periodic approximant found in space
Scientific Reports, 2018 We report the discovery of Al34Ni9Fe2, the first natural known periodic crystalline approximant to decagonite (Al71Ni24Fe5), a natural quasicrystal composed of a periodic stack of planes with quasiperiodic atomic order and ten-fold symmetry.
L. Bindi, Joyce Pham, P. Steinhardt
semanticscholar +1 more source
Le Journal de Physique Colloques, 1986 Daisies, and composite flowers, exhibit an ordered arrangement of florets (phyllotaxis) generated by a simple algorithm. Their structure has self-similarity (inflation), golden mean, Fibonacci numbers, and quasicrystalline grain boundaries, for elementary crystallographic (homogeneity) and biological reasons. Grain boundaries are also 2π-disclinations.
openaire +3 more sources
Macromolecular Chemistry and Physics, Volume 226, Issue 7, April 2025.This Perspective bridges between the frontiers of macromolecular chemistry and supramolecular chemistry with the help of living cationic‐ring opening polymerization of self‐organizable cyclic imino ethers. The goal of this research is to attempt to bring synthetic self‐organizations to the same level of perfection and functionality similar to that of ...
Virgil Percec, Dipankar Sahoo
wiley +1 more source
Structure of the icosahedral Ti-Zr-Ni quasicrystal
, 2002 The atomic structure of the icosahedral Ti-Zr-Ni quasicrystal is determined by invoking similarities to periodic crystalline phases, diffraction data and the results from ab initio calculations.
A. E. Carlsson +81 more
core +1 more source
Local spectral estimates and quantitative weak mixing for substitution Z${\mathbb {Z}}$‐actions
Journal of the London Mathematical Society, Volume 111, Issue 4, April 2025.Abstract The paper investigates Hölder and log‐Hölder regularity of spectral measures for weakly mixing substitutions and the related question of quantitative weak mixing. It is assumed that the substitution is primitive, aperiodic, and its substitution matrix is irreducible over the rationals.
Alexander I. Bufetov +2 more
wiley +1 more source
The eight-fold way for optical quasicrystals
, 2013 In a recent Letter we proposed a means to realize a quasicrystal with eight-fold symmetry by trapping particles in an optical potential created by four lasers.
Duneau, Michel, Jagannathan, Anuradha
core +4 more sources