Results 81 to 90 of about 17,081 (219)

Quasicrystal patterns in a neural field model

Physical Review Research, 2020
Doubly periodic patterns in planar neural field models have been extensively studied since the 1970s for their role in explaining geometric visual hallucinations. The study of activity patterns that lack translation invariance has received little, if any,
Aytül Gökçe, Stephen Coombes, Daniele Avitabile   +2 more
doaj   +1 more source

Stability of Two-Dimensional Soft Quasicrystals

, 2015
The relative stability of two-dimensional soft quasicrystals is examined using a recently developed projection method which provides a unified numerical framework to compute the free energy of periodic crystal and quasicrystals. Accurate free energies of
Jiang, Kai, Shi, An-Chang, Tong, Jiajun, Zhang, Pingwen   +3 more
core   +1 more source

Topological Quasiparticles of Light: From Spin‐Orbit Coupling to Photonic Skyrmions

Laser &Photonics Reviews, Volume 19, Issue 24, December 17, 2025.
This review summarizes recent advances in photonic skyrmions, emphasizing the central role of spin–orbit coupling in their formation. The review discusses how spin–orbit interactions generate skyrmionic textures, examines modulation strategies for their dynamic control, and provides an overview of emerging directions and opportunities where these ...
Xinrui Lei, Qiwen Zhan
wiley   +1 more source

Multiple Diffraction in a Basic Co-Rich Decagonal Al-Co-Ni Quasicrystal

Metals
To reveal its influence on quasicrystal structure analysis, multiple diffraction effects in a basic Co-rich decagonal Al-Co-Ni quasicrystal have been investigated in-house and with synchrotron radiation.
Changzeng Fan
doaj   +1 more source

Computation and visualization of photonic quasicrystal spectra via Blochs theorem

, 2008
Previous methods for determining photonic quasicrystal (PQC) spectra have relied on the use of large supercells to compute the eigenfrequencies and/or local density of states (LDOS).
Alejandro W. Rodriguez, Alexander P. McCauley, C. Janot, E. Ott, G. H. Golub, I. Gohberg, J. D. Joannopoulos, K. Wang, M. A. Kaliteevski, R. Lifshitz, S. G. Johnson, Steven G. Johnson, Yehuda Avniel, Z. Bai   +13 more
core   +1 more source

Bloch–Landau–Zener Oscillations in Moiré Lattices

Fortschritte der Physik, Volume 73, Issue 11, November 2025.
Abstract A theory of two‐dimensional Bloch–Landau–Zener (BLZ) oscillations of wavepackets in incommensurate moiré lattices under the influence of a weak linear gradient is developed. Unlike periodic systems, aperiodic lattices lack translational symmetry and therefore do not exhibit a conventional band‐gap structure.
Sergey K. Ivanov, Yaroslav V. Kartashov, Vladimir V. Konotop   +2 more
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, A. Katz, A. Niikura, A. Quandt, A. Sadoc, A. Yamamoto, A.M. Viano, A.P. Tsai, A.P. Tsai, A.P. Tsai, A.P. Tsai, C. Dong, C. Janot, C. Janot, C. Janot, C. L. Henley, C.L. Henley, C.L. Henley, C.L. Henley, D. Gratias, D. Vanderbilt, E. Cockayne, E.H. Majzoub, E.H. Majzoub, G. Bergman, G. Kresse, G. Kresse, G. Kresse, G. Kresse, G.A. Yurko, H.J. Monkhorst, I.R. Fisher, J.C. Holzer, J.L. Libbert, J.P. Davis, J.P. Perdew, J.Q. Guo, J.W. Cahn, K. F. Kelton, K.F. Kelton, K.F. Kelton, K.F. Kelton, K.F. Kelton, L. Smrčok, M. Audier, M. Boudard, M. Boudard, M. Cornier-Quiquandon, M. de Boissieu, M. de Boissieu, M. Duneau, M. Krajči, M. Krajči, M. Methfessel, M. Mihalkovič, M. Mihalkovič, M. Mihalkovič, M. Mihalkovič, M. Nyman, M. Windisch, M. Windisch, M.E. Kirkpatrick, P. Bak, R. G. Hennig, R. Mackay, R. Phillips, R. Phillips, R.A. Dunlap, R.G. Hennig, R.G. Hennig, S. Ritsch, S.-Y. Qiu, V. Elser, V. Elser, V. Elser, V.V. Molokanov, V.V. Molokanov, W.J. Kim, W.J. Kim, X. Zhang, X. Zhang, Z. Zhang   +81 more
core   +1 more source

Icosahedral Clusters [In@Tr12]10–: Synthesis, Characterization, and Electronic Structure Investigations of Na4A6Tr13 (A = Rb, Cs; Tr = In, Tl)

European Journal of Inorganic Chemistry, Volume 28, Issue 26, September 24, 2025.
The mixing of the elements indium and thallium is investigated for the Na4A6Tl13 structure type (A = Rb, Cs). Providing of indium instantly results in the formation of [In@Tr12]10– (Tr = In, Tl) cluster units. The dissolution behavior in liquid ammonia was investigated as well as DFT calculations are carried out to elucidate the bonding situation ...
Melissa Janesch, Antti J. Karttunen, Stefanie Gärtner   +2 more
wiley   +1 more source

Formation of a quasicrystalline Pb monolayer on the ten-fold surface of the decagonal Al-Ni-Co quasicrystal

, 2008
Lead has been deposited on the ten-fold surface of decagonal Al72Ni11Co17 to form an epitaxial quasicrystalline single-element monolayer. The overlayer grows through nucleation of nanometer-sized irregular islands and the coverage saturates at 1 ML.
Fournee, V., Jenks, C. J., Ledieu, J., Leung, L., McGrath, R., Parle, J. K., Smerdon, J. A.   +6 more
core   +1 more source

Aramid Nanofiber Aerogels: Versatile High Complexity Components for Multifunctional Composites

Advanced Materials, Volume 37, Issue 38, September 25, 2025.
Different forms of aramid nanofibers (ANFs) and especially aerogels from them, offer a sustainable route to high‐performance biomimetic nanocomposites. Due to the cartilage‐like architecture, ANF‐based materials enable breakthroughs in energy, electromagnetic, biomedical, and water purification technologies.
Mingqiang Wang, Shuhan Hu, Sangwok Bae, Volkan Cecen, Ahmet E. Emre, Zhengxiang Zhong, Li Liu, Carl Heltzel, Yudong Huang, Nicholas A. Kotov   +9 more
wiley   +1 more source