Results 71 to 80 of about 537,168 (232)

A Comprehensive Comparative Study of Active Learning Schemes for Nanophotonics Design

Advanced Intelligent Discovery, EarlyView.
Active learning (AL) strategies are benchmarked for the binary design of planar multilayer nanophotonic structures. Factorization machines combined with quantum annealing (QA) become effective as dimensionality increases. Hybrid QA provides the strongest results for 100‐layer problems, highlighting the importance of optimization method selection in ...
Serang Jung, Seongmin Kim, Jaehyun Park, Chaeyoung Park, Zhihao Xu, Sanghyo Hwang, Baiqing Ye, Youn sang Kim, Sun‐Kyung Kim, Tengfei Luo, Eungkyu Lee   +10 more
wiley   +1 more source

Nano-electromechanical switchable photonic metamaterials

, 2011
We introduce mechanically reconfigurable electrostatically-driven photonic metamaterials (RPMs) as a generic platform for large-range tuning and switching of photonic metamaterial properties.
Ou, J-Y., Jiang, L., Plum, E., Zheludev, N.I.   +3 more
core   +1 more source

Trapped-Mode Resonances in Planar Metamaterials with High Structural Symmetry

, 2008
We propose a new type of planar metamaterials that can support high-Q electromagnetic modes, namely trapped modes, excitation of which is polarization ...
Fedotov, V.A., Nikolay Zheludev, Vassili Fedotov, Nikitas Papasimakis, Sergey Prosvirnin, Said Zouhdi, Zouhdi, S., Zheludev, N.I., Prosvirnin, S.L.   +8 more
core   +1 more source

Exact modelling method for discrete finite metamaterial lens [PDF]

IET Microwaves, Antennas & Propagation, 2010
We describe an efficient rigorous model suitable for calculating the properties of finite metamaterial samples, which takes into account the discrete structure of metamaterials based on capacitively loaded ring resonators. We illustrate how this model applies specifically to a metamaterial lens employed in magnetic resonant imaging.
Lapine, M., Jelinek, L., Marques, R., Freire, M. J.   +3 more
openaire   +2 more sources

Polarization‐Dependence of Nonlinear Optical Effects in Silicon: The Case of Ultrafast Processing

Advanced Physics Research, EarlyView.
The dependence of the input polarization for the nonlinear optical propagation in silicon is investigated theoretically and experimentally. The perturbative regime is examined using pump‐probe shadowgraphy and nonlinear transmission, whereas the case of permanent laser‐induced modifications is addressed using a combination of Raman micro‐spectroscopy ...
Namig Alasgarzade, Alessandro Alberucci, Stree V. Arumugam, Markus Blothe, Maxime Chambonneau, Chandroth P. Jisha, Stefan Nolte   +6 more
wiley   +1 more source

Analysis of resonant responses of split ring resonators using conformal mapping techniques [PDF]

, 2007
We report a novel method for modeling the resonant frequency response of infra-red light, in the range of 2 to 10 microns, reflected from metallic spilt ring resonators (SRRs) fabricated on a silicon substrate.
Khokhar, A.Z., De La Rue, R.M., Lahiri, Basudev, Basudev, L., McMeekin, Scott G., De La Rue, Richard M., McMeekin, S.G., Khokhar, Ali Z., Johnson, Nigel P., Johnson, N.P., Ali Z. Khokhar, Scott G. McMeekin, Basudev Lahiri, Richard M. De La Rue, Nigel P. Johnson   +14 more
core   +1 more source

Elastic metamaterials and dynamic homogenization: a review

International Journal of Smart and Nano Materials, 2015
In this paper, we review the recent advances which have taken place in the understanding and applications of acoustic/elastic metamaterials. Metamaterials are artificially created composite materials which exhibit unusual properties that are not found in
Ankit Srivastava
doaj   +1 more source

Design of Solar Energy Harvesting Reactor From 2D to 3D Structures for Solar Thermal Conversion

Carbon Innovation, EarlyView.
ABSTRACT Solar energy utilisation is pivotal for advancing sustainable and renewable energy solutions, yet the rational design of high‐efficiency photothermal conversion devices remains a critical challenge. This paper systematically examines the evolution of photothermal reactor architectures from two‐dimensional (2D) to 3D structures, emphasising ...
Haozhe Zhuang, Runsen Wang, Yuxuan Meng, Yuejun Chen, Sanli Tang, Yuefei Ruan, Vellaisamy A. L. Roy, Meng Lin, Xianguang Meng   +8 more
wiley   +1 more source

Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials

Scientific Reports, 2017
This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses.
Kiran Kumar Amireddy, Krishnan Balasubramaniam, Prabhu Rajagopal   +2 more
doaj   +1 more source

A Nearly Perfect Implementation of a Broadband Optical Null Media via Space‐Folding

Laser &Photonics Reviews, EarlyView.
A space‐folding optical null medium with impedance‐matching layers enables broadband directional wave projection and wavefront engineering. By tailoring the folding ratio and dilution ratio, the structure maintains near‐unity transmittance over 5–9 GHz.
Yichao Liu, Jiale Li, Fei Sun, Qin Liao
wiley   +1 more source