Tunable Water‐Based Meta‐Lens (Advanced Optical Materials 6/2024)doi:10.1002/adom.202470020Yao, JinChen, Mu KuLin, RongTsai, Din PingLuk, Kwai‐ManAdvanced Optical Materials
In the latter case the metallic wires supplying current to the min- iature heaters can be arranged in a periodic way and thus comprise a broadband negative permittivity wire medium31.Water-based meta-atoms at the magnetic resonance together with a wire medium would possibly provide a tunable ...
A similar method on the analogy of the split-ring resonators in electromagnetic metamaterials was introduced into acoustic metamaterials, in which the resonant frequency of a split hollow sphere was tuned by filling water into the sphere to change the volume15. Similarly, the equivalent sound speed...
(a), (b) Optical images of the speckle pattern by using a He-Ne laser (a) and the random lasing (b) as the illumination source, respectively, and the calculated speckle contrasts are shown in the left corner of each image; (c), (d) optical images of the lens paper under the ...
The heat sink was connected to a water-cooled chiller and operated at 14 °C. The input mirror (IM) of the cavity is a flat dichroic mirror (antireflective coated at 976 nm and high-reflective coated at 1030–1080 nm). The output coupler (OC) of the cavity is a plane-concave mirror...
In the present study, the thermally responsive hydrogel-infilled phononic crystal lens was designed for the second and third transmission bands and served as a meta-material lens. The band structure and equifrequency contours of the proposed phononic crystal were calculated based on the frequency- ...
Lens-Waveguide coupled structureCoupling efficiencyLiquid crystalsGraded-indexIndian Journal of Physics - The efficient lens-to-waveguide light coupling has been an important issue in integrated photonic crystal circuits during the last years. In the present work, we......
contacts. The top side (with the metasurfaces and contacts) was then covered with a protective polymer coating (ProTEK PSB, Brewer Science) layer, and the remaining ~50-μm-thick silicon layer was etched in a 3:1 water-diluted potassium hydroxide solution at 80 °C. The membrane pattern...
We drill holes on random positions and inject water into these holes. Figure 5(b) demonstrates a delamination at the boundary of 2 layers. This delamination is presented as a gap between 2 stacked layers. The delaminated boundaries are labelled as red lines near to them, with arrows point...
Planar lensFocal lengthA plasmonic planar lens operating at terahertz (THz) region based on InSb micro-slit array with varying dielectric slit width is designed and numerically investigated. Dielectric slits provide desired phase retardations of beam manipulating with varying phase propagation constant. ...