Results 31 to 40 of about 12,412 (307)

On the reliability of power measurements in the terahertz band [PDF]

open access: yesCommunications Physics, 2022
In order for terahertz devices to reach technological maturity, robust characterization methods and reliable metrics for comparison between studies must be defined. In this comment, the authors describe the challenges faced in obtaining robust power measurements in the terahertz regime, and summarize recent efforts to establish standards for this field.
Enrique Castro-Camus   +3 more
openaire   +2 more sources

THz waveguide and bends based on metallic photonic crystals [PDF]

open access: yes, 2009
Metallic band-gap structures for THz waveguide and bends have been simulated using the finite element method.
E. Degirmenci   +5 more
core   +1 more source

High-temperature electromagnons in the magnetically induced multiferroic cupric oxide driven by intersublattice exchange [PDF]

open access: yes, 2014
Magnetically induced ferroelectric multiferroics present an exciting new paradigm in the design of multifunctional materials, by intimately coupling magnetic and polar order.
Doig, K. I.   +14 more
core   +1 more source

Terahertz Integrated Polarization Rotator Based on Effective-Medium-Clad Waveguide

open access: yes, 2023
We propose a terahertz planar polarization rotator monolithically implemented into the all-silicon effective-mediumclad dielectric waveguide platform operating over 260-400 GHz (WR-2.8 band).
Gao, W.   +3 more
core   +1 more source

Polarization-resolved ultrafast all-optical terahertz micro-grating array modulator based on Weyl semimetallic microfilm towards 6G technology

open access: yesResults in Physics, 2023
The 6th generation (6G) of communication technology, defines 0.1–1 THz as the communication band. As a result, ultrafast modulation and multi-dimensional resolution coding technologies in the terahertz band pose a big challenge.
Min Zhang   +8 more
doaj   +1 more source

Terahertz metamaterials for broadband, high modulation depth modulator, and tunable dual-band absorber based on metal-vanadium dioxide hybrid structure

open access: yesAIP Advances, 2023
Terahertz metamaterials for broadband, high modulation depth modulating, and tunable dual-band absorbing are designed based on the similar composite structure of metal and vanadium dioxide film arrays. By using external excitation to induce the insulator-
Chenxi Liu   +3 more
doaj   +1 more source

Terahertz Pulse Emission from Semiconductor Heterostructures Caused by Ballistic Photocurrents

open access: yesSensors, 2021
Terahertz radiation pulses emitted after exciting semiconductor heterostructures by femtosecond optical pulses were used to determine the electron energy band offsets between different constituent materials.
Vitaly Leonidovich Malevich   +5 more
doaj   +1 more source

Frequency coding metasurface for multiple directions manipulation of terahertz energy radiation

open access: yesAIP Advances, 2019
A multifunctional frequency coding metasurface is proposed in terahertz frequency band. Different from the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells in the whole working frequency band, the proposed ...
Shao-He Li, Jiu-Sheng Li
doaj   +1 more source

Terahertz High-resolution Radar Clutter Measurement and Analysis

open access: yesLeida xuebao, 2015
The clutter characteristics of terahertz high-resolution radar are essential for terahertz radar detection. This study analyzes the traditional clutter probabilistic model and the corresponding parametric estimation methods.
Yu Yang, Pi Yi-ming
doaj   +1 more source

Toward Sub‐Terahertz: Space‐Time Coding Metasurface Transmitter for Wideband Wireless Communications

open access: yesAdvanced Science, 2023
A space‐time coding metasurface (STCM) operating in the sub‐terahertz band to construct new‐architecture wireless communication systems is proposed. Specifically, a programmable STCM is designed with varactor‐diode‐tuned metasurface elements, enabling ...
Yujie Liu   +12 more
doaj   +1 more source

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