Results 71 to 80 of about 179,343 (322)

Graphene plasmons-enhanced terahertz response assisted by metallic gratings

open access: yesNanophotonics, 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

Electromechanically Tunable Metasurface Transmission Waveplate at Terahertz Frequencies

open access: yes, 2017
Dynamic polarization control of light is essential for numerous applications ranging from enhanced imaging to materials characterization and identification.
Averitt, Richard D.   +6 more
core   +1 more source

A terahertz grid frequency doubler [PDF]

open access: yes, 1998
We present a 144-element terahertz quasi-optical grid frequency doubler. The grid is a planar structure with bow-tie antennas as a unit cell, each loaded with a planar Schottky diode.
Alina Moussessian   +7 more
core   +2 more sources

Clean Up Behind You ‐ Novel Patterning Approach for Solid Immersion Lenses

open access: yesAdvanced Functional Materials, EarlyView.
A focused ion beam (FIB) milling strategy enables rapid fabrication of solid immersion lenses (SILs) with smooth, debris‐free surfaces eliminating the need for post‐processing. The optimized pattern improves efficiency and surface quality. SILs containing NV centers are also investigated, confirming the technique's suitability for quantum and photonic ...
Aleksei Tsarapkin   +10 more
wiley   +1 more source

Terahertz Non-Destructive Testing and Imaging of High-Voltage Cables

open access: yesFrontiers in Physics, 2022
The evaluation of the internal defects in high-voltage cross-linked polyethylene cables is highly crucial for the security and reliability of power transmission.
Zhang Zhenwei   +8 more
doaj   +1 more source

Multi-spectral materials: hybridisation of optical plasmonic filters and a terahertz metamaterial absorber [PDF]

open access: yes, 2013
Multi-spectral materials, using hybridised plasmonic and metamaterial structures, can simultaneously exhibit unique resonant phenomena over several decades of wavelengths.
Cumming, David R.S.   +3 more
core   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Light-guiding-light-based temporal integration of broadband terahertz pulses in air

open access: yesAPL 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

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Generalized Persistent Polar Format Algorithm for Fast Imaging of Airborne Video SAR

open access: yesRemote Sensing, 2023
As a cutting-edge research direction in the field of radar imaging, video SAR has the capability of high-resolution and persistent imaging at any time and under any weather.
Jiawei Jiang   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy