Results 261 to 270 of about 2,335,579 (312)

Abundant different types of soliton solutions for fractional modified KdV equation using auxiliary equation method. [PDF]

Sci Rep
Hussain A, Ibrahim TF, Birkea FMO, Yahya MS, Hassaballa AA, Mukalazi H.   +5 more
europepmc   +1 more source

Topological Effects in Transformation Optics

, 2013
Yongliang Zhang, Lina Shi, Xian-Zi Dong, Fuzhou Gong, Zhen‐Sheng Zhao, Xuan‐Ming Duan   +5 more
openalex   +1 more source

A Miniaturized High-Gain Multi-Beam Lens Antenna Based on Quasi-Conformal Transformation Optics

Miao Lv, Li Zhang, Mengyi Li, Fanchao Zeng, Shaoli Zuo, Zhiya Zhang, Yu Wang, Tong Wu   +7 more
openalex   +1 more source

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Transformation Optics Using Graphene

Science, 2011
Simulations show that control of the conductivity of a region within a graphene sheet could guide optical waves.
Ashka Vakil, N. Engheta
semanticscholar   +3 more sources

Broadband continuous supersymmetric transformation: a new paradigm for transformation optics

Conference on Lasers and Electro-Optics, 2023
Supersymmetry provides a new paradigm for transformation optics. We experimentally demonstrate broadband continuous supersymmetric transformation by designing a novel metamaterial on a Si platform for advanced control of the spatial characteristics of ...
Jieun Yim, N. Chandra, Xilin Feng, Zihe Gao, Shuang Wu, Tianwei Wu, Haoqi Zhao, N. Litchinitser, Liang Feng   +8 more
semanticscholar   +1 more source

A Hemispherical Wide-Angle Beamsteering Near-Surface Focal-Plane Metamaterial Luneburg Lens Antenna Using Transformation-Optics

IEEE Transactions on Antennas and Propagation, 2022
A hemispherical Luneburg lens (LL) with the focal plane near lens surface is proposed using a transformation optics (TO)-based metamaterial (MTM) lens (metalens) concept for wide-angle beamsteering applications. The TO technique has long been implemented
Ruolei Xu, Zhi Ning Chen
semanticscholar   +1 more source

A Transformation-Optics-Based Flat Metamaterial Luneburg Lens Antenna With Zero Focal Length

IEEE Transactions on Antennas and Propagation, 2022
The transformation optics (TO) technique has been widely applied in the volume reduction of Luneburg lens (LL) in both optical and microwave regimes. However, it is found that the focus is usually not located on the surface of the transformed LL anymore ...
Ruolei Xu, Zhi Ning Chen
semanticscholar   +1 more source

Wideband hyperbolic flat lens in the Ka-band based on 3D-printing and transformation optics

, 2021
A flat wideband lens antenna operating in the Ka band is presented. The design corresponds to the transformation of a hyperbolic lens via quasi-optic transformation into a flat lens.
José-Manuel Poyanco, F. Pizarro, E. Rajo-Iglesias   +2 more
semanticscholar   +1 more source

Equivalent Planar Lens Ray-Tracing Model to Design Modulated Geodesic Lenses Using Non-Euclidean Transformation Optics

IEEE Transactions on Antennas and Propagation, 2020
This article describes a design procedure that enables a time-efficient evaluation of the focusing properties of modulated geodesic lenses using ray tracing on the equivalent gradient-index planar lens. The method uses transformation optics to define the
N. Fonseca, Q. Liao, O. Quevedo–Teruel
semanticscholar   +1 more source

Optical Hough transform

Applied Optics, 1986
An optical technique is presented for achieving the Hough transform at video rates. Both coherent and incoherent approaches are discussed and analyzed. An incoherent system which combines edge enhancement with the Hough transform is also considered. Use of the optical Hough transform for the location of the bridges and roadways in outdoor scenes and ...
W H, Steier, R K, Shori
openaire   +2 more sources