Results 71 to 80 of about 10,716 (266)

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

Controlling light-with-light without nonlinearity

, 2012
According to Huygens' superposition principle, light beams traveling in a linear medium will pass though one another without mutual disturbance. Indeed, it is widely held that controlling light signals with light requires intense laser fields to ...
AS Schwanecke, B Gjonaj, BS Luk'yanchuk, C Huygens, C Hägglund, CH Gan, ED Palik, G Volpe, HM Gibbs, J Hao, JD Jackson, K Aydin, M Durach, M Fleischhauer, M Shapiro, N Liu, N Papasimakis, S Thongrattanasiri, TS Kao, TV Teperik, VA Fedotov   +20 more
core   +1 more source

Fractal Metamaterial Absorber with Three-Order Oblique Cross Dipole Slot Structure and its Application for In-band RCS Reduction of Array Antennas [PDF]

, 2014
To miniaturize the perfect metamaterial absorber, a fractal three-order oblique cross dipole slot structure is proposed and investigated in this paper. The fractal perfect metamaterial absorber (FPMA) consists of two metallic layers separated by a lossy ...
Cao, Xiangyu, Gao, Jun, Li, Sijia, Liu, Hongxi, Zhang, Di, Zheng, Yuejun   +5 more
core   +1 more source

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source

Numerical Study of a Wide-Angle and Polarization-Insensitive Ultrabroadband Metamaterial Absorber in Visible and Near-Infrared Region

IEEE Photonics Journal, 2019
An ultrabroadband metamaterial absorber structure based on a periodic array of metallic-dielectric multilayered conical frustums is numerically investigated and proposed.
Nguyen Thi Quynh Hoa, Phan Huu Lam, Phan Duy Tung, Tran Sy Tuan, Hugo Nguyen   +4 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Design, theory, and measurement of a polarization insensitive absorber for terahertz imaging

, 2008
We present the theory, design, and realization of a polarization-insensitive metamaterial absorber for terahertz frequencies. We derive geometrical-independent conditions for effective medium absorbers in general, and for resonant metamaterials ...
A. Serdyukov, B. A. Munk, C. M. Bingham, D. R. Smith, N. I. Landy, N. Jokerst, T. Tyler, W. J. Padilla   +7 more
core   +1 more source

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

Advanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur, George Maddison, Jaianth Vijayakumar, Paul Tafforeau, Kathy Christofidou, Peter David Lee, PJ Tan, Chu Lun Alex Leung   +7 more
wiley   +1 more source

Infrared perfect absorber based on nanowire metamaterial cavities

, 2012
An infrared perfect absorber based on gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in alumina host exhibits an effective permittivity with strong anisotropy, which supports
Deng, Huixu, Gao, Jie, He, Sailing, He, Yingran, Jiao, Xiangyang, Yang, Xiaodong   +5 more
core   +1 more source