Graphene plasmons-enhanced terahertz response assisted by metallic gratings
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
Generalized Persistent Polar Format Algorithm for Fast Imaging of Airborne Video SAR
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
Combating the Distance Problem in the Millimeter Wave and Terahertz Frequency Bands [PDF]
In the millimeter-wave (30-300 GHz) and terahertz (0.1-10 THz) frequency bands, the high spreading loss and molecular absorption often limit the signal transmission distance and coverage range.
I. Akyildiz, Chong Han, Shuai Nie
semanticscholar +1 more source
Light-guiding-light-based temporal integration of broadband terahertz pulses in air
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
Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction [PDF]
Converting Polarization The conversion of a light signal from one polarization direction to another plays an important role in communication and metrology. The components that are presently used for polarization conversion, however, tend to be relatively
N. Grady+8 more
semanticscholar +1 more source
Multi-resonant tunable absorber of terahertz metamaterial based on GaAs and VO2
Based on the fact that the conductivity of photosensitive semiconductors can be regulated by external pump light, a metamaterial absorber with single-band and dual-band switchable in terahertz region is designed by replacing gallium arsenide (GaAs ...
Tingting Yuan+4 more
doaj
Giant Tunable Goos–Hänchen Shifts Based on Prism/Graphene Structure in Terahertz Wave Region
We investigate the giant tunable Goos-Hänchen shifts in prism/graphene structure. It is found that large positive and negative lateral Goos-Hänchen shifts can be easily controlled by adjusting the chemical potential of the graphene, which
Li Jiu-Sheng, Wu Jing-fang, Zhang Le
doaj +1 more source
Four-Dimensional Micro/Nanorobots via Laser Photochemical Synthesis towards the Molecular Scale
Miniaturized four-dimensional (4D) micro/nanorobots denote a forerunning technique associated with interdisciplinary applications, such as in embeddable labs-on-chip, metamaterials, tissue engineering, cell manipulation, and tiny robotics.
Yufeng Tao+8 more
doaj +1 more source
Electrical tunability of terahertz nonlinearity in graphene
We turn graphene from an inert electronic material to the most nonlinear material for the terahertz range using a small voltage. Graphene is conceivably the most nonlinear optoelectronic material we know.
S. Kovalev+17 more
semanticscholar +1 more source
In this work, we propose a structure consisting of three metamaterial layers and a metallic grating layer to rotate the polarization of arbitrary linearly polarized incidence to the y-direction with high transmissivity by electrically tuning these ...
Zhenyu Yang+8 more
doaj +1 more source