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Article
Physics, Multidisciplinary
Ruslan Salikhov et al.
Summary: Engineering of spin-orbit interactions in a magnetic multilayered structure enables the coherent generation of spin waves using terahertz radiation, benefiting spintronic device development. By exploiting relativistic spin-orbit torques confined to metal/ferromagnet interfaces, we improve light-matter interaction and successfully excite spin-wave modes with frequencies up to 0.6 THz and wavelengths as short as 6 nm using broadband terahertz radiation. Our results have broad applicability and offer the potential for nanoscale control of high-frequency signals.
Article
Engineering, Electrical & Electronic
Alejandro Rivera-Lavado et al.
Summary: RF probes based on 50-omega planar transmission lines are crucial for RF device development, but current technology lacks precision and repeatability. Here, we propose a novel RF probe technology based on near-field coupling of dielectric waveguides, offering an extremely broad frequency range up to 340 GHz, the largest continuous bandwidth reported to date. A concept demonstrator using this approach enables contactless RF probing across the microwave, millimeter-wave, and Terahertz range.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2023)
Article
Optics
Xiaolin Zhuang et al.
Summary: A C-shape-split-ring-based phase discontinuity metasurface with a liquid crystal elastomer substrate is introduced for infrared modulation of terahertz wavefront. By manipulating the deflection of the substrate, controllable and broadband wavefront steering is achieved, with a maximum output angle change of 22 degrees at 0.68 THz. The liquid crystal elastomer metasurface also demonstrates the performance of a beam steerer, frequency modulator, and tunable beam splitter, which are highly desired in terahertz wireless communication and imaging systems.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Computer Science, Information Systems
Jitao Li et al.
Summary: This paper designs spatially interleaved terahertz metasurfaces based on the ingenious spatial interleaving principles and demonstrates diverse wavefront manipulations in the terahertz range. The functions performed include OAM superposition of single-frequency vortex beams, separate vortex focusing of single-frequency dual beams, different OAM manipulations of bifrequency beams in different planes, and achromatic focusing. These functions prove that spatially interleaved metasurfaces can manipulate terahertz wavefronts at both single frequency and bifrequency, which traditional metasurfaces cannot. This work paves the way for diverse terahertz wavefront manipulations.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Myonghoo Hwang et al.
Summary: The lithography-free fabrication of terahertz chiral metamaterials is achieved by combining two-step buckling processes and glancing-angle deposition. The manufactured chiral metamaterials exhibit mirror-shaped terahertz circular dichroism (TCD) signals in the range of 0.2-2.5 THz. The enhancement of sensing the chirality of biocrystal enantiomers is attributed to the synergistic effects of superchiral field enhancement and the electromagnetic resonance between the CHAMs and biocrystals.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Jingjing Yang et al.
Summary: The hybrid selective laser melting (SLM) technology combines the advantages of both processes to produce large-scale, high-quality, high-resolution, and complicated-shaped metallic parts. The microstructure, microhardness, tensile properties, and corrosion resistance of laser-welded SLMed 304 stainless steel, Inconel 718 superalloy, and Ti-6Al-4V alloy were compared to explore the effect of SLMed microstructural anisotropy and crystal structure. The results showed differences in grain size, dendrite arm spacing, and mechanical properties between the laser-welded joints and SLMed samples, as well as variations among the different alloys.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Physics, Applied
Xin Liao et al.
Summary: The combination of 2D Dirac semimetal graphene and 3D counterpart Cd3As2 in Dirac heterostructures can overcome the weak optical absorption in graphene-based devices and the dark current in pure Cd3As2 photodetectors, leading to high-performance photodetectors with broadband detection, high sensitivity, and rapid response.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Jiayue Liu et al.
Summary: In this work, we demonstrated an all-dielectric cascaded metasurface consisting of a spin-decoupled metasurface and a PB metasurface. The design achieves manipulation of terahertz (THz) beams, including the disruption of diffraction characteristics of the complementary spin beams and power modulation. This work opens up new avenues for the design of ultra-compact multifunctional devices.
Article
Chemistry, Multidisciplinary
Yufeng Tao et al.
Summary: Semiconductive hydrogels offer a valuable platform combining the advantages of metals and organisms, but traditional processing methods often fail to meet the needs of industries like mu-robotics and n-energy. A femtosecond laser lifting-off technique breaks conventional limitations, allowing for high-density integration and tunable electric conductivity. This technology enables the fabrication of various functional components for future optoelectronic products and energy storage solutions.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Environmental
Yongni Shao et al.
Summary: In this study, microalgae and terahertz spectroscopy technology were used to establish a prediction model for heavy metal concentration in water. The results showed that the detection time was significantly reduced and the accuracy was improved compared to traditional methods. This new method provides a fast and accurate way for biological monitoring of heavy metal pollution in water.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Vasileios Balos et al.
Summary: The solvation of ions alters the properties of water, and the underlying mechanism is believed to be the disruption of water's hydrogen-bonding network caused by ions. This study investigates the dissipation of energy in salt solutions and reveals that highly charged cations enhance the rotational-to-translational energy transfer, while highly charged anions reduce it. Molecular dynamics simulations provide insights into the changes in the hydrogen-bond strength between water molecules induced by cations and anions.
Article
Optics
Stephanie C. Malek et al.
Summary: We experimentally demonstrate nonlocal dielectric metasurfaces that provide both spatial and spectral control over light, focusing light exclusively over a narrowband resonance. We also realize a versatile platform for multispectral wavefront shaping, applicable in augmented reality and transparent displays.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Editorial Material
Optics
Lei Xu et al.
Summary: An innovative time-varying metasurface has been developed to enable dual-channel data transmissions for converting light signals to microwave signals. This novel technique represents a significant advancement in building full-spectrum networks to meet the growing demands for wireless communications. It also enhances the functionalities of tunable metasurfaces and stimulates the development of new information-oriented applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Richard H. J. Kim et al.
Summary: This study demonstrates the successful application of THz near-field nanoconductivity mapping to visualize and quantify charge filling in grain boundary traps of metal halide perovskites. It reveals distinct dielectric heterogeneity and degradation pathways, providing crucial insights into the performance and properties of perovskite materials and devices.
Article
Engineering, Manufacturing
Jingjing Yang et al.
Summary: In this study, the selective laser melting technology was used to synthesize medium manganese Mn-xCu alloys directly from blended elemental powders. The effects of heat treatment on the microstructure and damping properties of the alloys were investigated. The results showed that solution and aging treatment significantly improved the damping capacity of the alloys.
3D PRINTING AND ADDITIVE MANUFACTURING
(2022)
Article
Optics
Bin He et al.
Summary: A thermally tunable dielectric metasurface composed of InSb cylindrical micropillars is proposed for generating vortex beams in the terahertz region. The resonance frequency can be tuned by changing the diameter of the micropillars, showing stable performance at different temperatures. This metasurface has potential applications in terahertz imaging, detecting, and communication.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Weibao He et al.
Summary: This study demonstrates the construction of a terahertz metasurface supported by the EIT effect through inverse design for the first time, showing the potential applications of inverse design in terahertz device design.
PHOTONICS RESEARCH
(2021)
Review
Materials Science, Multidisciplinary
Prashanth Gopalan et al.
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Physical
M. S. Islam et al.
Article
Nanoscience & Nanotechnology
Qiwu Shi et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Optics
Yihao Yang et al.
Article
Chemistry, Physical
Fuyu Li et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Multidisciplinary
Xuanqing Fan et al.
Article
Multidisciplinary Sciences
Bo Yan et al.
SCIENTIFIC REPORTS
(2020)
Article
Optics
Haihui Zhao et al.
ADVANCED PHOTONICS
(2020)
Article
Engineering, Electrical & Electronic
Zhi-Yu Tan et al.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2020)
Article
Chemistry, Multidisciplinary
Yufeng Tao et al.
Article
Optics
Wei Wang et al.
Article
Multidisciplinary Sciences
Manukumara Manjappa et al.
NATURE COMMUNICATIONS
(2018)
Article
Multidisciplinary Sciences
Zefeng Chen et al.
NATURE COMMUNICATIONS
(2018)
Article
Multidisciplinary Sciences
Shuming Wang et al.
NATURE COMMUNICATIONS
(2017)
