Results 1 to 10 of about 10,669 (267)

A Dual-Band Dual-Polarized Base Station Antenna Array With Isolation Enhancement

IEEE Open Journal of Antennas and Propagation, 2023
In this paper, a dual-band dual-polarized antenna with isolation enhancement is designed. The proposed antenna operates in the frequency range of 3.4–3.6 GHz and 4.8-5 GHz, where the center frequency of the high band (HB) is 1.4 times that of the ...
Lei Ge, Yinhui Wang, Mingye Du, Weiyang Liu, Yue Zhao   +4 more
doaj   +1 more source

High-Performance Metamaterial Light Absorption from Visible to Near-Infrared Assisted by Anti-Reflection Coating

Photonics, 2023
This study experimentally demonstrates two types of ultra-broadband metamaterial absorbers with high performance in the visible-to-near-infrared range by using different anti-reflection coatings (i.e., SiO2 and Si3N4) and a multi-subcell Ti-SiO2-Ti ...
Dongqing Wu, Lei Lei, Meiting Xie, Ping Xu, Shixiang Xu   +4 more
doaj   +1 more source

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

Actuators, 2023
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high
Rui Ye, Junbiao Chen, Shuxiang Dong, Bing Li   +3 more
doaj   +1 more source

Dynamical and topological properties of the spin angular momenta in general electromagnetic fields

Communications Physics, 2023
Spin angular momenta play important roles in light–matter interactions, leading to the emergence of the spin Hall effect and topological quasiparticles in modern optics.
Peng Shi, Luping Du, Aiping Yang, Xiaojin Yin, Xinrui Lei, Xiaocong Yuan   +5 more
doaj   +1 more source

Heterogeneous Integration on Silicon Photonics [PDF]

Proceedings of the IEEE, 2018
To enhance the functionality of the standard silicon photonics platform and to overcome its limitations, in particular for light emission, ultrafast modulation, and nonlinear applications, integration with novel materials is being investigated by several groups.
Owen Marshall, Mark Hsu, Zhechao Wang, Bernardette Kunert, Christian Koos, Dries Van Thourhout   +5 more
openaire   +3 more sources

Ultra-broadband mid-infrared absorber based on hyperbolic α-MoO3

Results in Physics, 2023
Owing to their broad operational bandwidth, broadband absorbers are extensively used in various applications, such as solar cells, microbolometers, and light modulators.
Jiaqi Zhu, Le Cheng, Jun Liang, Yanyu Zhao, Youning Gong, Yupeng Zhang, Guo Ping Wang   +6 more
doaj   +1 more source

FrameBase: Enabling integration of heterogeneous knowledge [PDF]

Semantic Web, 2017
Large-scale knowledge graphs such as those in the Linked Open Data cloud are typically stored as subject-predicate-object triples. However, many facts about the world involve more than two entities. While n-ary relations can be converted to triples in a number of ways, unfortunately, the structurally different choices made in different knowledge ...
Rouces, Jacobo, de Melo, Gerard, Hose, Katja   +2 more
openaire   +2 more sources

Super-resolution three-dimensional structured illumination profilometry for in situ measurement of femtosecond laser ablation morphology

APL Photonics, 2023
Femtosecond laser ablation has found wide-ranging applications in the surface structuring of nanoelectronics and nanophotonics devices. Traditionally, the inspection of the fabricated three-dimensional (3D) morphology was performed using a scanning ...
Jielei Ni, Qianyi Wei, Yuquan Zhang, Jie Xu, Xi Xie, Yixuan Chen, Yanan Fu, Gengwei Cao, Xiaocong Yuan, Changjun Min   +9 more
doaj   +1 more source

Size-Prior-Oriented Target Detection and Recognition for Automotive SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Automotive SAR target detection, which involves interpreting scenes or distinguishing different objects from SAR images, is a fundamental and critical problem in intelligent driving. An increasing number of methods have been proposed in airbone-SAR image
Zekang Fan, Bo Zhao, Cuiqi Si, Fengming Huang, Qiuchen Liu, Lei Huang   +5 more
doaj   +1 more source

Strategies for Managing Charge in Electron-Beam Lithography on Glass

Photonics
Optical metasurfaces fabricated via electron beam lithography (EBL) are increasingly pivotal for biosensing and bioimaging applications. However, charge accumulation on insulating glass substrates persists as a critical barrier, causing distortion of the
Zhongyang Liu, Yue Chen, Leyang Dang, Wenwu Zhang, Luwei Wang, Junle Qu   +5 more
doaj   +1 more source