Results 51 to 60 of about 64,657 (295)
Topological classification of Chern-type insulators with the photonic Green function
, 2018 The Chern topological numbers of a material system are traditionally written in terms of the Berry curvature which depends explicitly on the material band structure and on the Bloch eigenwaves.
Silveirinha, Mário G.
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Deterministic Detection of Single Ion Implantation
Advanced Engineering Materials, EarlyView.Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead +6 more
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PhotonicsThe investigation of topological structures and phases in photonics has created unprecedented opportunities for developing advanced on-chip terahertz waveguide devices.
Zeyu Zhao, Hao-Zhe Wang, Hang Ren, Su Xu
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Bifurcations and stability of gap solitons in periodic potentials
, 2004 We analyze the existence, stability, and internal modes of gap solitons in nonlinear periodic systems described by the nonlinear Schrodinger equation with a sinusoidal potential, such as photonic crystals, waveguide arrays, optically-induced photonic ...
Andrey A. Sukhorukov +13 more
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Advanced Functional Materials, EarlyView.This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger +11 more
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Next MaterialsSuperconducting photonic crystals have emerged as a promising platform for advanced photonic devices, however the precise control of their photonic band gaps remains a fundamental challenge. This study proposes an efficient topology optimization approach
Lihong Han +4 more
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Band gaps and cavity modes in dual phononic and photonic strip waveguides
AIP Advances, 2011 We discuss theoretically the simultaneous existence of phoxonic, i.e., dual phononic and photonic, band gaps in a periodic silicon strip waveguide. The unit-cell of this one-dimensional waveguide contains a hole in the middle and two symmetric stubs on ...
Y. Pennec +7 more
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, 2012 In the paper, we present a new kind of function photonic crystals, which refractive index is a function of space position. Unlike conventional PCs, which structure grow from two materials, A and B, with different dielectric constants $\epsilon_{A}$ and $\
Bai-Jun Zhang +23 more
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Holographic fabrication of three-dimensional orthorhombic and tetragonal photonic crystal templates using a diffractive optical element [PDF]
, 2007 We report the fabrication of both orthorhombic and tetragonal photonic crystal templates using a phase mask technique. Three-dimensional photonic crystal structures were formed by a double exposure of SU8 to three-beam interference patterns generated by ...
Chen, KP +5 more
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Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source