Results 81 to 90 of about 10,498 (267)

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

Metamaterial electromagnetic concentrators with arbitrary geometries

Optics Express, 2009
The electromagnetic concentrators play an important role in the harnessing of light in solar cells or similar devices, where high field intensities are required. The material parameters for two-dimensional (2D) metamaterial-assisted electromagnetic concentrators with arbitrary geometries are derived based on transformation-optical approach ...
Jingjing, Yang, Ming, Huang, Chengfu, Yang, Zhe, Xiao, Jinhui, Peng   +4 more
openaire   +2 more sources

Electromagnetic enhancement in lossy optical transition metamaterials [PDF]

Optics Letters, 2010
We investigate the effect of anomalous field enhancement in metamaterials where the effective refractive index gradually changes from positive to negative values, i.e. transition metamaterials. We demonstrate that considerable field enhancement can be achieved in lossy optical transition metamaterials that have electromagnetic material properties ...
Mozjerin, Irene, Gibson, Tolanya, Furlani, Edward P., Gabitov, Ildar R., Litchinitser, Natalia M.   +4 more
openaire   +3 more sources

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source

Fano Resonances in All-Dielectric Metamaterials

, 2015
We study the fundamental properties of all-dielectric metamaterials composed of high-index dielectric rods. We vary the value of rod permittivity from low to high, and analyze a crossover between photonic crystals and metamaterials observed in the ...
Limonov, Mikhail F, Poddubny, Alexander N, Semouchkina, Elena, Hosseinzadeh, A, Semouchkin, George, Kivshar, Yuri, Rybin, Mikhail V, Samusev, Kirill B   +7 more
core   +2 more sources

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Trapped-modes, slow light and collective resonances in metamaterials

, 2009
A new class of metamaterials exhibiting coherent, collective response has been introduced. It is shown that the sharp resonant behaviour of coherent metamaterials can only be observed in arrays of metamaterial elements and is absent from the response of ...
Papasimakis, Nikitas
core  

Electron beams in 2D inhomogeneous graphene and nonlinear electrodynamics properties of graphene-dielectric multilayered metamaterials

, 2015
We develop farther our 'three-level' approach to graphene metamaterials including 'metamaterial treatment' of 2D beams of electron (BE) in graphene with 2D inhomogeneous and nonlinear electromagnetic waves in graphene-dielecric multlayered structres.
Rapoport, Y, Grimalsky, V., Boardman, A, Koshevaya, S., Kalinich, N., Kivshar, Yuri, Castrejon-Martinez, Ch.   +6 more
core   +1 more source

Electromagnetic devices and antenna systems based on space-time and time-varying metamaterials and metasurfaces

, 2021
Time-varying metamaterials and metasurfaces have unlocked a novel way for the electromagnetic waves to interact with artificial materials. In this contribution, we present an overview of the recent components and devices based on time modulation of ...
Bilotti F., Ramaccia D., Toscano A.
core   +1 more source

Electromagnetic wave propagations in conjugate metamaterials

Optics Express, 2017
In this work, by employing field transformation optics, we deduce a special kind of materials called conjugate metamaterials, which can support intriguing electromagnetic wave propagations, such as negative refractions and lasing phenomena. These materials could also serve as substrates for making a subwavelength-resolution lens, and the so-called ...
Yadong, Xu, Yangyang, Fu, Huanyang, Chen
openaire   +2 more sources