Terahertz metasurface

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August undefined, 2024

WebSpecifically, we design a bifocal metasurface, which can focus on one circularly polarized component as a point and spin-opposite component as a vortex under the linearly … WebMar 23, 2024 · The metasurface-based approach for manipulatig THz waves enables remarkable contributions in designing ultra-thin/ultra-compact and tunable THz …

A silicon-based metasurface for terahertz sensing - ScienceDirect

WebSpecifically, we design a bifocal metasurface, which can focus on one circularly polarized component as a point and spin-opposite component as a vortex under the linearly polarized (LP) incidence. ... Multifunctional terahertz metasurfaces for polarization transformation and wavefront manipulation Z. Yue, J. Liu, J. Li, J. Li, C. Zheng, G. Wang ... WebAug 15, 2016 · By changing the Fermi level of the graphene ribbons, the response frequency of the proposed metasurface can be adjusted, and as a result, tunable spectrum splitting can be realized. The present... bunnings powerpass activation

New Metasurface Helps Make the Switch to Terahertz …

WebTerahertz metasurface zone plates with arbitrary polarizations to a fixed polarization conversion. Citation: Yue Z, Li JT, Li J, Zheng CL, Liu JY et al. Terahertz metasurface zone plates with arbitrary polarizations to a fixed polarization conversion. Opto-Electron Sci 1, 210014 (2024). doi: 10.29026/oes.2024.210014. Original Article Open Access. WebSep 11, 2024 · Both MXene and black phosphorus (BP), which actg as hot two-dimensional (2D) materials, have unique optical properties and important applications for nano-micro optical devices. Here, a composite MXene/BP-based metasurface, consisting of Ti3C2Tx and BP layers, is proposed for investigating the optical responses and electric field by … WebMetasurfaces, composed of prearranged artificial unit cells possessing different electromagnetic (EM) responses, provide unprecedented abilities to realize versatile … Loop is the open research network that increases the discoverability and impact … Terahertz applications in various fields, for instance, spatial light modulation (SLM), … Especially in the terahertz spectrum, metasurfaces attract broad attention by … Terahertz applications in various fields, for instance, spatial light modulation (SLM), … bunnings powerpass card lost

Tailoring Electromagnetic Responses in Terahertz Metasurface by ...

Full-space terahertz metasurface based on thermally tunable InSb

WebSep 14, 2024 · Metasurfaces are planar artificial structures composed of thousands of unit cells or metallic structures, whose size is either comparable to or smaller than the wavelength of the illuminated wave, which can efficiently interact with the THz wave and exhibit additional degrees of freedom to modulate the THz wave. WebAug 2, 2024 · A terahertz broadband polarization converter based on the metasurface of a double-split ring resonator is proposed. The structural parameters of this device have been optimized in numerical simulations. The results show that in the frequency range from 0.49 to 1.88 THz (bandwidth of 1.39 THz) the proposed device rotates incident linearly … hall county attorney nebraskaWebApr 6, 2024 · a Structure of the terahertz absorption-enhanced metasurface unit cell covered with trace amount α-lactose. b Real and imaginary parts of the lactose dielectric … hall county animal shelter available dogs

"WebFeb 1, 2024 · In this paper, we propose an ultra-high sensitivity terahertz senor based on tunable PIT effect in a simple monolayer graphene metasurface. A periodic structure of our designed metasurface is composed of a wide horizontal graphene and two graphene sheets as bright mode and dark mode, respectively. " - Terahertz metasurface

Terahertz metasurface

Metasurfaces for manipulating terahertz waves - Phys.org

WebThis proposed flexible metasurface can achieve a typical plasmon-induced transparency (PIT) effect in the reflection spectra at terahertz region by introducing a novel graphene assembly film (GAF) whose conductivity reaches 1.1 × 10 6 S·m −1 that is close to metals. In addition, the LDW processing method ablates the designed pattern on the ... WebAug 9, 2024 · Metamaterials and metasurfaces 1, 2, 3 are artificial materials composed of (3-D and 2-D, respectively) arrangements of sub-wavelength inclusions, which are engineered so as to tailor the effective...

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WebAug 25, 2024 · In the terahertz band, how integrating multiple functions into a device with a tiny unit structure is a challenge. In this paper, an optically-controlled multifunctional … WebJul 1, 2024 · When the proposed metasurface is used as a tri-band terahertz absorber, it achieves terahertz absorption of 96.3% at 0.46 THz, 95.7% at 0.74 THz and 99.7% at 1.27 THz, respectively. When the top and bottom GeTe are amorphous states, the metasurface switches from terahertz wave absorption to electromagnetic induced transparency with …

WebApr 6, 2024 · a Structure of the terahertz absorption-enhanced metasurface unit cell covered with trace amount α-lactose. b Real and imaginary parts of the lactose dielectric constant in the frequency band of 0.4 to 0.6 THz. c Transmission and reflection spectra of the metasurface covered with 0.3 μm α-lactose. WebSep 20, 2024 · Figure 1(a) is a schematic of the proposed InSb-based full-space thermally tunable terahertz PB metasurface. As shown in figure 1(a), at 220 K, the metasurface can realize transmission and reflection of THz wave, while the temperature increased to 360 K, most of the incident waves were absorbed, enabling the beam ‘OFF’ function. As shown …

WebOct 26, 2024 · Conventional terahertz (THz) components, such as high-impedance silicon lens, polyethylene lens, and quartz wave plate, rely on the phase accumulation along the … WebFeb 28, 2024 · Metasurfaces are materials engineered with tiny nanostructures that can be used to manipulate light. The first device they made uses the polarization state of a terahertz wave as a switch to select the information carried by the superpositioned states of vortex and spherical waves.

WebJan 25, 2024 · The modeling and simulation of the designed terahertz tunable graphene metasurface were performed by COMSOL Multiphysics package, using a lossless …

WebJun 3, 2024 · We report theoretical investigations performed in the terahertz G-band, in the 228–232 GHz spectral window for a piezoelectrically-responsive ring-cone element metasurface composed of polyvinylidene fluoride (PVDF)/Silicon and PVDF/Silica glass. The choosing of this spectral window is motivated by a multitude of applications in … bunnings powerpass card replacementWebAug 25, 2024 · In the terahertz band, how integrating multiple functions into a device with a tiny unit structure is a challenge. In this paper, an optically-controlled multifunctional linear polarization conversion metasurface working in the terahertz band is proposed. The reflection and transmission polarization conversion functions can be realized by … hall county birth certificateWebMar 1, 2024 · As shown in Fig. 1, the unit cell of the proposed silicon-based metasurface consists of a Jerusalem cross pillar and a square loop pillar, which are coaxial. The … bunnings powerpass card applicationWebMar 23, 2024 · The metasurface-based approach for manipulatig THz waves enables remarkable contributions in designing ultra-thin/ultra-compact and tunable THz components. The main advantages/contributions of THz ... bunnings power pass cards bunnings powerpass contact phone numberWebAbstract Metasurfaces solve the lack of materials in the terahertz (THz) band and control precisely the amplitude, phase, polarization, and ... of THz waves, providing an effective way to realize THz functional devices. This article focuses on the design of THz metasurface modulators with a unit structure consisting of metal square rings ... bunnings powerpass discount rateWebMar 31, 2024 · The coding metasurface integrated with tunable materials offers an attractive alternative to manipulate the THz beam dynamically. In this work, we demonstrate a THz … bunnings powerpass discounts