Results 71 to 80 of about 85,964 (311)
Advanced Materials Technologies, EarlyView.A THz metasurface device integrating a metal–dielectric–metal resonator with microwall‐defined recessed regions enables spatially guided, label‐free sensing of micrometer‐scale plastic particles. The as‐fabricated devices exhibit distinct THz reflection resonances for 3.1‐µm polystyrene particles and a concentration‐dependent resonance‐frequency‐shift ...
Naoki Inomata +2 more
wiley +1 more source
Graphene plasmons-enhanced terahertz response assisted by metallic gratings
Nanophotonics, 2022 Terahertz detectors based on two-dimensional Dirac materials offer a new approach for room-temperature terahertz detection with high response and low noise.
Yu Anqi +9 more
doaj +1 more source
Molecular spectroscopy with a multimode THz quantum-cascade laser [PDF]
, 2011 A terahertz absorption spectrometer for highresolution molecular spectroscopy is realized. The spectrometer is based on a multimode quantum-cascade laser. The design and performance of the spectrometer are presented.
A. D. Semenov +19 more
core +1 more source
Broadband and efficient terahertz beam scanning using a 3D-printed Risley prism
, 2022 We present a Risley prism beam-scanning system for terahertz waves. The scanning system consists of two 3Dprinted prisms made of cyclic olefin copolymer (COC), which is a low loss material at terahertz frequencies.
Lees, H. +3 more
core +1 more source
Advanced Robotics Research, EarlyView.A balanced multimodal food‐waste dataset and a novel Split Spatial‐Spectral Attention fusion framework are presented for robotic contaminant detection. Separate processing of RGB, thermal, and multispectral inputs preserves subtle material signatures before feature integration, reducing modality interference and improving classification and ...
Matthew Vestal +5 more
wiley +1 more source
Metasurface-Based Multidimensional Light-Field Manipulation: From Technologies to Applications. [PDF]
Adv Sci (Weinh)Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Yin H +6 more
europepmc +2 more sources
Sum-Frequency Signals in 2D-Terahertz-Terahertz-Raman Spectroscopy
, 2020 We demonstrate that halogenated methane 2D-Terahertz Terahertz Raman (2D-TTR) spectra are determined by the complicated structure of the instrument response function (IRF) along $f_1$ and by the molecular coherences along $f_2$. Experimental improvements
Griffin Mead (1760926) +4 more
core +1 more source
Advanced Science, EarlyView.In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu +5 more
wiley +1 more source
A micromechanical beam-steering device for terahertz systems [PDF]
, 2004 Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium.
Drysdale, T.D., Cumming, D.R.S.
core +2 more sources
Light-guiding-light-based temporal integration of broadband terahertz pulses in air
APL Photonics, 2023 The next generation of all-optical computation platforms prefers the light-guiding-light (LGL) scheme inside a medium that envisions circuitry-free and rapidly reconfigurable systems powered by dynamic interactions between light beams.
Jiayu Zhao +7 more
doaj +1 more source