Results 51 to 60 of about 40,326 (144)

Tuning chirality in photonic metamaterials with semiconductor quantum dots [PDF]

, 2009
Recently we have shown that the classical phenomenon of optical activity, which is traditionally associated with chirality (helicity) of organic molecules, proteins and inorganic structures, can be observed in artificial planar media which exhibit ...
Fedotov, V.A., Liu, X.-X., X.-X. Liu, Chen, Y., Y. Chen, V. A. Fedotov, Plum, E., Tsai, D.P., D. P. Tsai, Zheludev, N.I., E. Plum, N. I. Zheludev   +11 more
core   +2 more sources

Metamaterial Inspired Microstrip Antenna Investigations Using Metascreens

International Journal of Antennas and Propagation, 2015
A dual layer periodically patterned metamaterial inspired antenna on a low cost FR4 substrate is designed, simulated, fabricated, and tested. The eigenmode dispersion simulations are performed indicating the left handed metamaterial characteristics and ...
Muhammad Tauseef Asim, Mushtaq Ahmed
doaj   +1 more source

Radiative cooling and indoor light management enabled by a transparent and self-cleaning polymer-based metamaterial

Nature Communications
Transparent roofs and walls offer a compelling solution for harnessing natural light. However, traditional glass roofs and walls face challenges such as glare, privacy concerns, and overheating issues.
Gan Huang, Ashok R. Yengannagari, Kishin Matsumori, Prit Patel, Anurag Datla, Karina Trindade, Enkhlen Amarsanaa, Tonghan Zhao, Uwe Köhler, Dmitry Busko, Bryce S. Richards   +10 more
doaj   +1 more source

Structural optimized mechanical metamaterial for multi transient high-g impact suppression and self-monitoring

Materials & Design
For extreme high-g mechanical impact of vehicle personnel and penetrating munition fuze, specific protections in terms of simultaneous high energy absorption performance, high recoverability and real-time alarming are urgent demands.
Kejia Zhang, Benqiang Yang, Zhisen Zhu, Juteng Fu, Xiangyu Han, Wenling Zhang, Keren Dai   +6 more
doaj   +1 more source

Controlling the effective bending stiffness via out-of-plane rotational resonances in elastic metamaterial thin plates

New Journal of Physics, 2018
In this work, we investigate the effective parameters of elastic metamaterial thin plates. We find that the out-of-plane rotational resonances can lead to a resonant behavior in the effective bending stiffness of metamaterial thin plates, which provides ...
Jinjie Shi, Chenkai Liu, Yun Lai
doaj   +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

Ultra-thin wide-band split-ring resonator-based compact mu-negative metamaterial for terahertz applications

Results in Engineering
This paper focuses on designing and investigating a new type of metamaterial called an ultra-thin wide-band mu-negative (MNG) metamaterial. The targeted frequency range is 0.1–10 THz.
Mohammad Jakir Hossain, Md Alim Uddin, Md Habibur Rahman, Md Kamruzzaman, Mohammad Rashed Iqbal Faruque, K.S. Al-mugren   +5 more
doaj   +1 more source

Metamaterial NEMS: giant optical nonlinearity and magnetoelectric effect

We report NEMS-based reconfigurable photonic metamaterials controlled by electrical currents, magnetic fields and light. Our structures provide practically useful solutions for sub-megahertz and high contrast magnetoelectric modulation of metamaterial ...
Ou, J-Y., Valente, J., MacDonald, K.F., Plum, E., Zheludev, N.I.   +4 more
core   +1 more source

Improvement of 5.8 GHz Band Patch Antenna with Metamaterial

Journal of Measurement Science and Instrumentation, 2010
A patch antenna,a metamaterial patch antenna and a proposed metamaterial patch antenna,are simulated and compared.Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is
Nam-ki LEE, Seung-in YANG
doaj  

Wide-band polarization independent perfect metamaterial absorber based on concentric rings topology for solar cells application

, 2016
Since the discovery of metamaterial absorber to the present days, several designs were proposed which display single-, dual-, and multiple-bands absorption responses in almost all regions of solar spectrum.
Rufangura, Patrick, Sabah, Cumali
core   +1 more source