Results 31 to 40 of about 9,176,618 (297)

Broadband Mid-IR superabsorption with aperiodic polaritonic photonic crystals [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2014
We propose an approach for broadband near-perfect absorption with aperiodic-polaritonic photonic crystals (PCs) operating in the phonon-polariton gap of the constituent material.
Devarapu G. C. R., Foteinopoulou S.
doaj   +1 more source

Thermal Emission Control via Bandgap Engineering in Aperiodically Designed Nanophotonic Devices

open access: yesNanomaterials, 2015
Aperiodic photonic crystals can open up novel routes for more efficient photon management due to increased degrees of freedom in their design along with the unique properties brought about by the long-range aperiodic order as compared to their periodic ...
Enrique Maciá
doaj   +1 more source

$m$th-order Fisher-KPP equation with free boundaries and time-aperiodic advection

open access: yesMathematics in Applied Sciences and Engineering, 2021
In this paper, we investigate a $m$th-order Fisher-KPP equation with free boundaries and time-aperiodic advection. Considering the influence of advection term and initial conditions on the long time behavior of solutions, we obtain spreading-vanishing ...
Changqing Ji, Dandan Zhu, Jingli Ren
doaj   +1 more source

Local symmetry dynamics in one-dimensional aperiodic lattices [PDF]

open access: yes, 2013
A unifying description of lattice potentials generated by aperiodic one-dimensional sequences is proposed in terms of their local reflection or parity symmetry properties.
Diakonos, F. K.   +3 more
core   +2 more sources

Aperiodic-Order-Induced Multimode Effects and Their Applications in Optoelectronic Devices

open access: yesSymmetry, 2019
Unlike periodic and random structures, many aperiodic structures exhibit unique hierarchical natures. Aperiodic photonic micro/nanostructures usually support optical multimodes due to either the rich variety of unit cells or their hierarchical structure.
Hao Jing, Jie He, R. Peng, Mu Wang
semanticscholar   +1 more source

Schrödinger’s What is Life?—Complexity, Cognition and the City

open access: yesEntropy, 2023
This paper draws attention to four central concepts in Schrödinger’s ‘What is Life?’ that have not, as yet, received sufficient attention in the domain of complexity: delayed entropy, free energy, order out of order and aperiodic crystal.
Juval Portugali
doaj   +1 more source

Anti-Powers in Infinite Words [PDF]

open access: yes, 2018
In combinatorics of words, a concatenation of $k$ consecutive equal blocks is called a power of order $k$. In this paper we take a different point of view and define an anti-power of order $k$ as a concatenation of $k$ consecutive pairwise distinct ...
Fici, Gabriele   +3 more
core   +3 more sources

Aperiodic Weighted Automata and Weighted First-Order Logic [PDF]

open access: yesInternational Symposium on Mathematical Foundations of Computer Science, 2019
By fundamental results of Sch\"utzenberger, McNaughton and Papert from the 1970s, the classes of first-order definable and aperiodic languages coincide. Here, we extend this equivalence to a quantitative setting.
M. Droste, P. Gastin
semanticscholar   +1 more source

Anti-Powers in Infinite Words [PDF]

open access: yes, 2016
In combinatorics of words, a concatenation of k consecutive equal blocks is called a power of order k. In this paper we take a different point of view and define an anti-power of order k as a concatenation of k consecutive pairwise distinct blocks of the
Fici, Gabriele   +3 more
core   +1 more source

Aperiodic Photonics of Elliptic Curves

open access: yesCrystals, 2019
In this paper we propose a novel approach to aperiodic order in optical science and technology that leverages the intrinsic structural complexity of certain non-polynomial (hard) problems in number theory and cryptography for the engineering of optical ...
Luca Dal Negro   +2 more
doaj   +1 more source

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