An Electrically Tunable Terahertz Plasmonic Device Based on Shape Memory Alloys and Liquid Metals
Sign Up to like & getrecommendations! Published in 2018 at "Advanced Optical Materials"
DOI: 10.1002/adom.201700684
Abstract: An electrically tunable terahertz (THz) plasmonic device is designed and fabricated using liquid metals (eutectic gallium indium EGaIn) and shape memory alloy wires (Flexinol). The liquid metal is injected into the voids of a poly(dimethyl)… read more here.
Keywords: electrically tunable; tunable terahertz; shape memory; liquid metals ... See more keywords
All-Dielectric Tunable Terahertz Metagrating for Diffraction Control.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c13674
Abstract: Recently, tunable metagratings have attracted substantial attention in manipulating the diffraction of electromagnetic waves with considerable flexibility, but they are usually limited to inherent ohmic loss due to the metal layers. The all-dielectric schemes can… read more here.
Keywords: terahertz metagrating; dielectric tunable; terahertz; metagrating diffraction ... See more keywords
Actively tunable terahertz chain-link metamaterial with bidirectional polarization-dependent characteristic
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-46436-w
Abstract: A tunable terahertz (THz) chain-link metamaterial (CLM) is presented, which is composed of a tailored Au layer fabricated on Si substrate. CLM exhibits bidirectional polarization-dependent characteristic by applying a direct-current (dc) bias voltage on device.… read more here.
Keywords: bidirectional polarization; tunable terahertz; polarization; thz ... See more keywords
Tunable Terahertz Plasmons in Graphite Thin Films.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.147401
Abstract: Tunable terahertz plasmons are essential for reconfigurable photonics, which have been demonstrated in graphene through gating, though with relatively weak responses. Here we demonstrate strong terahertz plasmons in graphite thin films via infrared spectroscopy, with… read more here.
Keywords: terahertz plasmons; thin films; graphite thin; plasmons graphite ... See more keywords
Ultrasensitive Tunable Terahertz Sensor With Graphene Plasmonic Grating
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2886412
Abstract: We propose an ultrasensitive tunable terahertz (THz) sensor which consists of single-layer graphene-based gratings integrated with a Fabry–Perot cavity through numerical simulation. The excitation of standing-wave graphene surface plasmon polaritons can make the probing field… read more here.
Keywords: thz; graphene; plasmonic grating; ultrasensitive tunable ... See more keywords
Pneumatically Actuated Tunable Terahertz Metamaterial Absorber With Dual-Side Tuning Capability
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2713805
Abstract: Aiming to achieve dual-side postfabrication performance tuning capability, a new tunable terahertz metamaterial absorber design with built-in pneumatic actuation mechanism was proposed, in which a circular split ring resonator with double-slit was adopted. Using multiphysics… read more here.
Keywords: terahertz metamaterial; tunable terahertz; dual side; tuning capability ... See more keywords
Broadband dynamically tunable terahertz absorber based on a Dirac semimetal.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.389828
Abstract: In this paper, we propose a broadband tunable metamaterial absorber in the terahertz (THz) region. The absorber comprises a Dirac semimetal film, a dielectric layer, and a gold ground plane. Numerical results show that the… read more here.
Keywords: dynamically tunable; tunable terahertz; absorber; broadband dynamically ... See more keywords
Engineering tunable terahertz radiation from an electron bunch using graphene metasurfaces.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.456494
Abstract: We propose an approach to generate tunable terahertz (THz) radiation from an electron bunch passing over the unique graphene metasurface. We not only control the frequency of the THz radiation but also tune the amplitude… read more here.
Keywords: electron bunch; radiation electron; tunable terahertz; radiation ... See more keywords
Highly efficient and tunable terahertz polarization converter based on double subwavelength metallic gratings infiltrated with liquid crystal.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.469263
Abstract: In this work, a tunable cross-polarized transmission structure at the terahertz frequency was demonstrated, and the polarization state during modulation was investigated. The proposed structure can significantly enhance the polarization conversion performance of nematic liquid… read more here.
Keywords: efficient tunable; highly efficient; liquid crystal; polarization ... See more keywords
Tunable terahertz metamaterial absorber based on Dirac semimetal films.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.009555
Abstract: In this paper, the tunable properties of metamaterial absorbers based on 3D Dirac semimetal films (DSFs) in the terahertz (THz) regime are discussed in theory. We consider the absorbers with square-shaped, circular-patch, and cross-shaped resonators.… read more here.
Keywords: tunable terahertz; based dirac; terahertz metamaterial; absorber ... See more keywords
Tunable terahertz metasurface platform based on CVD graphene plasmonics.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.444573
Abstract: Graphene plasmonics provides a powerful means to extend the reach of metasurface technology to the terahertz spectral region, with the distinct advantage of active tunability. Here we introduce a comprehensive design platform for the development… read more here.
Keywords: tunable terahertz; terahertz metasurface; graphene; graphene plasmonics ... See more keywords