Results 81 to 90 of about 12,987 (191)

Planar bilipschitz extension from separated nets

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We prove that every L$L$‐bilipschitz mapping Z2→R2$\mathbb {Z}^2\rightarrow \mathbb {R}^2$ can be extended to a C(L)$C(L)$‐bilipschitz mapping R2→R2$\mathbb {R}^2\rightarrow \mathbb {R}^2$, and we provide a polynomial upper bound for C(L)$C(L)$. Moreover, we extend the result to every separated net in R2$\mathbb {R}^2$ instead of Z2$\mathbb {Z}
Michael Dymond, Vojtěch Kaluža
wiley   +1 more source

Electronic transport properties of quasicrystals: a Review

open access: yes, 1997
We present a review of some results concerning electronic transport properties of quasicrystals. After a short introduction to the basic concepts of quasiperiodicity, we consider the experimental transport properties of electrical conductivity with ...
Burkov S. E.   +8 more
core   +1 more source

Quasicrystals in a monodisperse system [PDF]

open access: yesPhysical Review E, 1999
We investigate the formation of a two-dimensional quasicrystal in a monodisperse system, using molecular dynamics simulations of hard sphere particles interacting via a two-dimensional square-well potential. We find that more than one stable crystalline phase can form for certain values of the square-well parameters.
Skibinsky A   +4 more
openaire   +3 more sources

Metallic-mean quasicrystals as aperiodic approximants of periodic crystals

open access: yesNature Communications, 2019
Quasicrystals differ from traditional incommensurate structures because they have non-crystallographic rotational symmetries. Here the authors introduce a scheme to produce metallic-mean quasicrystals in two dimensions with 6-fold rotational symmetry ...
Joichiro Nakakura   +3 more
doaj   +1 more source

Twists and Turns of Liquid Crystals Unravelled by Small‐Angle Scattering

open access: yesSmall Methods, Volume 10, Issue 3, 9 February 2026.
X‐ray scattering provides valuable insights into material structure and self‐assembly. This review discusses the use of small‐ and wide‐angle X‐ray scattering (SWAXS) as well as grazing incident SWAXS for examining self‐assembled systems, especially liquid crystals.
Jessie Wong   +2 more
wiley   +1 more source

Strongly localized modes in one-dimensional defect-free magnonic quasicrystals

open access: yesAIP Advances, 2014
Signal storage in magnonic quasicrystals using a slow spin-wave mode, rather than the quasinormal mode of traditional periodic magnonic crystals, is proposed, which is analogous to the slow light mode in the field of optics.
C. H. Chen   +3 more
doaj   +1 more source

Repetitive Delone Sets and Quasicrystals

open access: yes, 2003
This paper considers the problem of characterizing the simplest discrete point sets that are aperiodic, using invariants based on topological dynamics.
Lagarias, Jeffery C.   +1 more
core   +1 more source

Topological Polar Textures in van der Waals Moiré Superlattices

open access: yesSmall Structures, Volume 7, Issue 2, February 2026.
Moiré superlattices allow the realization of several novel properties, including the formation of complex topological polarization textures in ultrathin samples consisting of layered 2D materials. This review highlights the rapid progress in this emerging field, both through theory and experiment, discusses the field's potential implications, and draws
Joshua Edwards   +4 more
wiley   +1 more source

Dodecagonal quasicrystals: Construction of 2D lattices and demonstrations using laser pointers

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2022
Photographic slides of an aperiodic dodecagonal tiling were used as two-dimensional diffraction gratings to describe and demonstrate the basic properties of dodecagonal quasicrystals. This paper complements our earlier publication on Penrose (decagonal)
Vladimir M. Petrushevski   +1 more
doaj  

Time‐Domain Near‐Field Scanning Microscopy of Terahertz Metasurfaces

open access: yesAdvanced Photonics Research, Volume 7, Issue 1, January 2026.
Time‐domain near‐field scanning terahertz microscopy provides direct access to subwavelength electromagnetic fields on metasurfaces. By combining controlled polarization excitation with nanoscale probing, this technique enables quantitative visualization of localized hotspots, surface‐wave propagation, and wavefront manipulation, offering a powerful ...
Ruxue Wei, Soren Petersen, Weili Zhang
wiley   +1 more source

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