Metamaterials: Tailorable Zero-Phase Delay of Subwavelength Particles toward Miniaturized Wave Manipulation Devices (Adv. Mater. 40/2015)

2015 ◽  
Vol 27 (40) ◽  
pp. 6304-6304
Author(s):  
Qian Zhao ◽  
Zongqi Xiao ◽  
Fuli Zhang ◽  
Junming Ma ◽  
Ming Qiao ◽  
...  
Keyword(s):  
Phase Delay ◽  
Zero Phase

A Novel Method to Realize Zero Phase Delay of Electromagnetic Wave

2013 ◽  
Vol 760-762 ◽  
pp. 315-319
Author(s):  
Guo Yan Dong ◽  
Xiu Lun Yang ◽  
Xiang Feng Meng
Keyword(s):  
Electromagnetic Wave ◽  
Phase Velocity ◽  
Energy Flow ◽  
Phase Delay ◽  
Delay Propagation ◽  
Transmission Process ◽  
Transmitted Waves ◽  
Novel Method ◽  
Zero Index ◽  
Zero Phase

Zero phase delay of electromagnetic wave (EMW) transmission can be realized based on the wavefront modulation of photonic crystals (PhCs). When the phase velocity is controlled perpendicular to the group velocity with wavefronts (or phasefronts) parallel to the direction of energy flow, the phase will keep constant in transmission process despite of the increase of propagating length. The phase different between the incident and transmitted waves is measured to demonstrate that the phase can remain invariable in PhCs instead of zero-index materials or zero-averaged-index PhC superlattices. This effect can be extended to other artificially engineered materials, and will open a new route to obtain perfect zero-phase delay propagation for EMW.

A Zero Phase Delay Power Divider Using Zero Phase Impedance Transformer

2018 ◽  
Vol 28 (10) ◽  
pp. 876-878
Author(s):  
Mi Zhou ◽  
Yixin Gu ◽  
Bayaner Arigong
Keyword(s):  
Phase Delay ◽  
Power Divider ◽  
Zero Phase

Low-Loss Impedance-Matched Optical Metamaterials with Zero-Phase Delay

ACS Nano ◽  
2012 ◽  
Vol 6 (5) ◽  
pp. 4475-4482 ◽  
Author(s):  
Seokho Yun ◽  
Zhi Hao Jiang ◽  
Qian Xu ◽  
Zhiwen Liu ◽  
Douglas H. Werner ◽  
...  
Keyword(s):  
Phase Delay ◽  
Low Loss ◽  
Optical Metamaterials ◽  
Zero Phase

Sine phase compensation combining an amplitude phase controller and a discrete feed-forward compensator for electro-hydraulic shaking tables

2017 ◽  
Vol 40 (11) ◽  
pp. 3377-3389 ◽  
Author(s):  
Ge Li ◽  
Gang Shen ◽  
Zhen-Cai Zhu ◽  
Xiang Li ◽  
Wan-Shun Zang
Keyword(s):  
Control Strategy ◽  
Phase Error ◽  
Phase Delay ◽  
Shaking Table ◽  
Response Signal ◽  
Feed Forward ◽  
Amplitude Attenuation ◽  
Tracking Controller ◽  
Phase Deviation ◽  
Zero Phase

This article presents a novel control strategy on an electro-hydraulic shaking table under the acceleration control combining an amplitude phase controller and a zero phase error tracking controller with a discrete feed-forward compensator. Because of the electro-hydraulic system’s nonlinearity, phase delay and amplitude attenuation exist in the acceleration response signal inevitably when the electro-hydraulic shaking table system is excited by a sine vibration signal. Moreover, the phase delay of the electro-hydraulic shaking table is composed of phase deviation and actuator delay. For improving the acceleration tracking accuracy, an amplitude phase controller is employed to compensate the phase deviation and amplitude attenuation by introducing weights to adjust the reference signal. Meanwhile, the discrete feed-forward compensator is applied to compensate the actuator delay. As an offline compensator, the zero phase error tracking controller is employed to compensate the phase delay of the response signal and improve the convergence speed of the proposed controller. Overall, the proposed control strategy combines the merits of these three controllers with better tracking performance demonstrated by simulation and experimental results.

Tailorable Zero-Phase Delay of Subwavelength Particles toward Miniaturized Wave Manipulation Devices

2015 ◽  
Vol 27 (40) ◽  
pp. 6187-6194 ◽  
Author(s):  
Qian Zhao ◽  
Zongqi Xiao ◽  
Fuli Zhang ◽  
Junming Ma ◽  
Ming Qiao ◽  
...  
Keyword(s):  
Phase Delay ◽  
Zero Phase

scholarly journals Zero phase delay in metamaterials

2014 ◽  
Vol 44 (4) ◽  
pp. 406-416
Author(s):  
Ji ZHOU ◽  
Ke BI ◽  
GuoYan DONG
Keyword(s):  
Phase Delay ◽  
Zero Phase

Tunable zero-phase delay of one-dimensional photonic crystals containing InSb material

2020 ◽  
Vol 38 (1) ◽  
pp. 114
Author(s):  
Ziwei Zhou ◽  
Baofei Wan ◽  
Yi Xu ◽  
Yu Ma ◽  
Haifeng Zhang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Phase Delay ◽  
One Dimensional ◽  
Zero Phase

Metamaterials with Zero Phase Delay

2013 ◽  
Vol 873 ◽  
pp. 465-470
Author(s):  
Guo Yan Dong
Keyword(s):  
Refractive Index ◽  
Information Processing ◽  
Physical Phenomenon ◽  
Measurement Techniques ◽  
Early Years ◽  
Phase Delay ◽  
Delay Lines ◽  
Resonance Mechanism ◽  
Strong Resonance ◽  
Zero Phase

During the early years of research into metamaterials, some interest has shifted towards the realization of materials that exhibit zero or near-zero refractive index. A refractive index of zero implies that light enters a state of quasi-infinite phase velocity and infinite wavelength. Instead of strong resonance mechanism in metamaterials, the physical phenomenon of PhC is based on the special dispersion relations of photonic bands with weak loss. Several different metamaterials to realize zero phase delay are introduced in this paper. Their remarkable properties should have significant technological applications in photon delay lines with zero phase difference, information-processing devices, new optical phase control and measurement techniques.

scholarly journals Zero phase delay with relax incident condition in photonic crystals

2013 ◽  
Vol 21 (24) ◽  
pp. 29860
Author(s):  
Dong Guoyan ◽  
Bi Ke ◽  
Zhou Ji ◽  
Yang Xiulun ◽  
Meng Xiangfeng
Keyword(s):  
Photonic Crystals ◽  
Phase Delay ◽  
Zero Phase
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