M. Pahlevaninezhad and H.P. conceived the design and implementation and executed the experiments. M. Pahlevani, M.J.S., B.B. and F.C. refined the methodology. M. Pahlevaninezhad performed computational analyses for metasurface design. M. Pahlevaninezhad and Y.-W.H. fabricated the metasu...
The implementation of freeform optics on metasurfaces allows for extreme miniaturization of optical components. In our research we have demonstrated metasurface based optical elements such as lenses, vortex beam generators, and cubic phase plates near visible frequencies. Our fabricated lenses achieved ...
C.S. supervised the implementation progress of the research. Z.G. designed and proposed the multi-wavelength visible circular auto-focusing Airy beam metasurface with the assistance of X.J. and Q.C. S.Y., Z.H. and H.C. provided the standard experimental site and equipment for underwater...
[1-6]. At present, researchers have discovered many implementation technologies for broadband CP antennas such as substrate integrated waveguide [7,8], coplanar waveguide (CPW) [9,10], parasitic structures [11,12], resonators [13-15], metasurface structures [16-21], etc. Among them, CPW ...
Khaliq HS, Nauman A, Lee JW, Kim HR (2023) Recent progress on plasmonic and dielectric chiral metasurfaces: fundamentals, design strategies, and implementation. Adv Opt Mater 11(16):2300644. https://doi.org/10.1002/adom.202300644 Article CAS Google Scholar Yao H et al (2022) Ultrasensitive...
Even with the numerous benefits, terahertz technology is still faced with several challenges limiting its broader implementation. The key challenge is too much path loss of THz wave that causes a lot of distance attenuation and thus drastically impairs the performance of THz wave communication, ...
Thus, not only a straightforward implementation of thin dipole antennas cannot span the complete phase shift range, but also introduces a substantial amplitude response which impairs the efficiency of the hologram. Figure 3: Metasurface utilizing V-shaped nanoantennas. From Ref. [5]. Reprinted ...
Here, we present a novel implementation of metasurfaces with low dispersion that can be employed for the design of ultrawideband planar lenses. The implementation consists of two mirrored metasurfaces that are displaced exactly a half unit cell. This displacement produces two effects: It increases ...
Furthermore, from a practical implementation point of view, the surrounding medium refractive index can change due to unavoidable/uncertain conditions that an absorber performance can hamper. As a result, extensive investigation is needed to observe the surrounding medium effects on absorber performance....
Unfortunately, most on-chip optical absorbers rely on expensive small-area top-down micro/nano-lithography nanofabrication techniques, which impose a cost barrier for implementation in large-area fabrication and the development of practical applications [17], [18]. Currently, several methods have been...