Results 81 to 90 of about 3,127 (190)

Enhanced Nonlinear Optical Absorption Properties and Carrier Dynamics of Violet Phosphorene by Oxidation for Ultrafast Photonic Applications

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
This study investigates the effects of oxidation treatment on the nonlinear optical absorption properties and carrier dynamics of two‐dimensional violet phosphorene (VP), elucidating the underlying physical mechanisms. Furthermore, ultrashort laser pulses are achieved utilizing the enhanced saturation absorption and shortened carrier relaxation ...
Bo Li, Han Pan, Qingling Tang, Zhongben Pan, Hongwei Chu, Ying Li, Dechun Li   +6 more
wiley   +1 more source

Zn(C2H4NO2)2(SO2CH3NH2)2 and Zn(C2H4NO2)2[SO2(NH2)2]: Regulation of Unique ZnO(C2H4NO2)2 Units by Polar Tetrahedrons for Balanced UV Nonlinear Optical Performance

Advanced Science, Volume 13, Issue 43, 3 August 2026.
The modulation of polar tetrahedra enabled the synthesis of an outstanding short‐wave UV NLO crystal, Zn(C2H4NO2)2[SO2(NH2)2], which achieves a rare balance of a large bandgap (5.93 eV), high birefringence (Δn = 0.126 at 546 nm), and strong SHG response (1.36 × KDP), especially achieving excellent phase‐matching throughout the full transparency range ...
Chenjie Cui, Yuchen Yan, Xin Wen, Jindong Chen, Jiyang Wang, Zhanggui Hu, Ning Ye, Guang Peng   +7 more
wiley   +1 more source

Multipath-Assisted Ultra-Wideband Vehicle Localization in Underground Parking Environment Using Ray-Tracing

Sensors
In complex underground parking scenarios, non-line-of-sight (NLOS) obstructions significantly impede positioning signals, presenting substantial challenges for accurate vehicle localization.
Shuo Hu, Lixin Guo, Zhongyu Liu, Shuaishuai Gao   +3 more
doaj   +1 more source

Analysis of Machine Learning-Based NLOS Signal Identification Algorithm for UWB Indoor Localization Using CIR Waveform Features [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Ultra-wideband (UWB) technology stands out among numerous indoor positioning techniques due to its high operating frequency, low interception capability, resistance to multipath effects, and strong penetration.
K. Wang, C. Yang
doaj   +1 more source

Reverse Weak Polarity‐Induced Ordered Layer Control for Enhanced Second‐Harmonic Generation in Ultraviolet Nonlinear Optical Crystals

Advanced Science, Volume 13, Issue 43, 3 August 2026.
Reverse Weak Polarity‐Induced Ordered Layer Control strategy, optimizing the design of layered structures, has been successfully designed. By leveraging inhomogeneous field of units to replace isotropic fields of metal cations, polar layers realize controllable layer stacking via a “layer→linker→layer” polarity transfer.
Lingli Wu, Chensheng Lin, Bing‐Xuan Li, Huixin Fan, Lingfei Lv, Shunda Yang, Tao Yan, Min Luo   +7 more
wiley   +1 more source

RM-CSTV: An effective high-resolution method of non-line-of-sight millimeter-wave radar 3-D imaging

National Science Open
Non-line-of-sight (NLOS) imaging is a novel radar sensing technology that enables the reconstruction of hidden targets. However, it may suffer from synthetic aperture length reduction caused by ambient occlusion. In this study, a complex total variation (
Liu Xinyuan, Wei Shunjun, Pu Wei, Cai Xiang, Wen Yanbo, Guo Shisheng, Kong Lingjiang   +6 more
doaj   +1 more source

First‐Principles Investigation of the Structural, Electronic, Optical, Elastic, and Thermal Properties of Defect Diamond‐Like Hg3P2S8

Advanced Physics Research, Volume 5, Issue 8, August 2026.
The defect diamond‐like material Hg3P2S8 (HPS) is systematically investigated using first‐principles methods to reveal the interplay between highly distorted HgS4 and rigid PS4 units. The HPS material exhibits a strong anisotropic second‐harmonic generation (SHG) response, favorable optical properties, and low thermal conductivity, highlighting its ...
Saravana Karthikeyan SKS, Sankar Ganesh Ramaraj, Ryo Watanabe, Choji Fukuhara, Chang Yi Kong   +4 more
wiley   +1 more source

A Post-Processing Multipath/NLoS Bias Estimation Method Based on DBSCAN

Sensors
Positioning based on Global Navigation Satellite Systems (GNSSs) in urban environments always suffers from multipath and Non-Line-of-Sight (NLoS) effects. In such conditions, the GNSS pseudorange measurements can be affected by biases disrupting the GNSS-
Yihan Guo, Simone Zocca, Paolo Dabove, Fabio Dovis   +3 more
doaj   +1 more source

tops at NLO and NNLO [PDF]

Proceedings of RADCOR 2009 - 9th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) — PoS(RADCOR2009), 2010
We briefly review the recent progress in the study of higher order corrections to hadron scattering processes involving top quark pairs in the final state. In particular, we discuss the Monte-Carlo simulation of the $pp \to t \bar{t} b \bar{b}$ process at the next-to-leading order with the help of the {\tt Helac-NLO} system, and the status of the soft ...
openaire   +2 more sources

Indoor Mobile Localization in Wireless Sensor Network under Unknown NLOS Errors

International Journal of Distributed Sensor Networks, 2013
Localization is one of the key techniques in wireless sensor network. One of the main problems in indoor mobile localization is non-line-of-sight (NLOS) propagation. And the NLOS effects will lead to a large localization error. So the NLOS problem is the
Long Cheng, Hao Wu, Chengdong Wu, Yunzhou Zhang   +3 more
doaj   +1 more source