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Antimonene is a new 2D material and its applications in gas sensors are still deficient. We took a first principles investigation of three small organic molecules (formaldehyde, acetone, and methane) adsorption on the antimonene. We found that only the adsorption of the acetone molecule could induce a moderate adsorption energy, obvious charge transfer, and large work function change, which are suitable...
We present two kinds of broadband terahertz wave modulator fabricated with large-area graphene-based field-effect transistors (GFET). One is with improved modulation depth and switch speed by cautiously selecting an ultrathin AbO3 film (60 nm) as the gate dielectric materials, which reduces the Coulomb impurity scattering and cavity effect, and thus greatly improves the modulation performance. Another...
We demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) based on graphene as a saturable absorber (SA). Two fiber Bragg gratings (FBGs) are used as the end mirrors in an all-fiber linear cavity. The Q-switched EDFL has a pump threshold of 68.2 mW. The minimum pulse duration is 0.85 μs and the highest pulse energy is 40.9 nJ. The pulse repetition rate of the fiber laser can be widely...
In this paper, we present a novel nanostructure of reduced graphene oxide supported by vertical aligned ZnO nanorods for flexible supercapacitors. Layer-by-layer strategies are adopted to fabricate the electrodes on PET flexible substrates. Cu foil, Al-doped ZnO film and chemical-vapor deposition graphene is introduced on PET to serve as current collectors. ZnO nanorods are synthesized by a hydrothermal...
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