Results 151 to 160 of about 70,205 (364)
Electromagnetic reprogrammable coding-metasurface holograms
Nature Communications, 2017 Metasurfaces have enabled a plethora of emerging functions within an ultrathin dimension, paving way towards flat and highly integrated photonic devices.
Lianlin Li +9 more
semanticscholar +1 more source
Accelerating light with metasurfaces
Optica, 2018 It has been recently shown that especially engineered light beams have the remarkable ability to propagate along curved trajectories in vacuum. Current methods for generating accelerating beams use phase modulators and lenses leading to length scales on the order of tens of centimeters or larger.
Meredith Henstridge +6 more
openaire +3 more sources
Frequency‐Selective Terahertz Wave Amplification by a Time Boundary in Huygens' Metasurface
Advanced Optical Materials, EarlyView.In a free‐standing all‐dielectric Huygens' metasurface, ultrafast pulsed laser excitation is used to establish the time boundary for a coherent modulation to the electric and magnetic polarizability in the adiabatic limit. Amplification of THz waves at frequencies that can be continuously tuned have been achieved, showing an effective energy gain up to
Fu Deng +9 more
wiley +1 more source
Design and Optimization of Ellipsoid Scatterer-based Metasurfaces via the Inverse T-Matrix Method [PDF]
arXiv, 2019 Large-area metasurfaces composed of discrete wavelength-scale scatterers present an extremely large number of degrees of freedom to engineer an optical element. These degrees of freedom provide tremendous design flexibility, and a central challenge in metasurface design is how to optimally leverage these degrees of freedom towards a desired optical ...
arxiv
Advanced Optical Materials, EarlyView.For most microscopy measurements the sample is placed on a substrate, which causes symmetry breaking, especially relevant for chiral plasmonic nanostructures. DNA origami mediated X‐shaped AuNR dimers showing high structural purity in solution, exhibit significant diversity in lineshapes and signal intensities for their circular differential scattering
Amrita Chakraborty +9 more
wiley +1 more source
Design of tunable biperiodic graphene metasurfaces [PDF]
, 2012 Arya Fallahi +1 more
openalex +1 more source
3D Printed Optics Achieves Broadband Structured Light
Advanced Optical Materials, EarlyView.The arbitrary creation of structured light often requires complex design and fabrication steps and is largely limited to single wavelength. By leveraging off the toolkit for digital holograms, how complex amplitude modulation can be implemented as 3D printed optics in a manner that is broadband is shown, for the creation of multiwavelength forms ...
Leerin Perumal +4 more
wiley +1 more source
Effective electric and magnetic properties of metasurfaces in transition from crystalline to amorphous state [PDF]
, 2012 Mohammad Albooyeh +2 more
openalex +1 more source
Advanced Optical Materials, EarlyView.A reconfigurable intelligent surface is proposed that can simultaneously anomalously reflect the light and sense the angle of arrival. An in situ optimization of either the currents flowing on array elements or the far field in the receiver direction realizes anomalous reflection and suppresses parasitic scattering.
Mostafa Movahediqomi +4 more
wiley +1 more source
3D Conductive Polymer Printed Metasurface Antenna for Fresnel Focusing
Designs, 2019 We demonstrate a 3D printed holographic metasurface antenna for beam-focusing applications at 10 GHz within the X-band frequency regime. The metasurface antenna is printed using a dual-material 3D printer leveraging a biodegradable conductive polymer ...
Okan Yurduseven +4 more
doaj +1 more source