Results 41 to 50 of about 333,895 (294)

An ion-exchanged thulium-doped germanate glass channel waveguide laser operating near 1.9 micron

, 2013
Solid-state lasers operating in the eye-safe region near 2 micron are of considerable interest owing to various application areas such as remote sensing, spectroscopy and LIDAR.
Shepherd, D.P., Choudhary, Amol, Mackenzie, J.I., Pradeesh, Kannan, Feng, X., J. I. Mackenzie, D. P. Shepherd, X. Feng, A. Choudhary, K. Pradeesh   +9 more
core   +1 more source

Multimodal Human–Robot Interaction Using Human Pose Estimation and Local Large Language Models

Advanced Robotics Research, EarlyView.
A multimodal human–robot interaction framework integrates human pose estimation (HPE) and a large language model (LLM) for gesture‐ and voice‐based robot control. Speech‐to‐text (STT) enables voice command interpretation, while a safety‐aware arbitration mechanism prioritizes gesture input for rapid intervention.
Nasiru Aboki, Ilche Georgievski, Marco Aiello   +2 more
wiley   +1 more source

Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI

Advanced Science, EarlyView.
ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia, Martin J. Graves, Mary McLean, Carolin Pirkl, Carola‐Bibiane Schönlieb, Timo Schirmer, Florian Wiesinger, Matthias J. Ehrhardt   +7 more
wiley   +1 more source

Location-aided multi-user beamforming for 60 GHz WPAN systems [PDF]

, 2012
60 GHz wireless personal area networks (WPANs) offer multi-Gbps throughput, which will provide for a new wave of high data rate applications. This paper exploits the use of location iformation to improve the performance and enhance range of 60 GHz multi ...
Koçak, T, Taskin Kocak, Angela Doufexi, Doufexi, A, Han, C, Zhu, X, Xiaoyi Zhu, Congzheng Han, Kocak, Taskin, Zhu, Xiaoyi, Doufexi, Angela, Han, Congzheng   +11 more
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Early Retinal UCHL1 Dysregulation Coupled With Synaptic Loss Reflects Alzheimer's Disease Severity

Advanced Science, EarlyView.
This study identifies synapse‐enriched deubiquitinase UCHL1 as an early Aβ‐responsive regulator of retinal synaptopathy in Alzheimer's disease. Retinal UCHL1 loss accompanies excitatory synapse degeneration, p75NTR activation, and neuroinflammation, and predicts Braak stage and cognitive decline. Aβ42 fibrils trigger synaptic and UCHL1 depletion before
Altan Rentsendorj, Jean‐Philippe Vit, Alexandre Hutton, Yosef Koronyo, Saba Shahin, Edward Robinson, Ernesto Barron, Anthony Rodriguez, Ousman Jallow, Julia Sheyn, Bhakta Prasad Gaire, Lalita Subedi, Miyah R. Davis, Barathan Gnanabharathi, Alexander V. Ljubimov, Stuart L. Graham, Vivek K. Gupta, Mehdi Mirzaei, Debra Hawes, Katlin Silm, Keith L. Black, Lon S. Schneider, Alfredo A. Sadun, Jesse G. Meyer, Dieu‐Trang Fuchs, Maya Koronyo‐Hamaoui   +25 more
wiley   +1 more source

Site-Specific Propagation Loss Prediction in 4.9 GHz Band Outdoor-to-Indoor Scenario [PDF]

Electronics, 2019
Owing to the widespread use of smartphones and various cloud services, user traffic in cellular networks is rapidly increasing. Especially, the traffic congestion is severe in urban areas, and effective service-cell planning is required in the area for efficient radio resource usage.
Kentaro Saito, Qiwei Fan, Nopphon Keerativoranan, Jun-ichi Takada   +3 more
openaire   +1 more source

Design of Wideband Dual-band Substrate Integrated Waveguide Slot Antenna [PDF]

Radioengineering
A dual-band Half Mode Substrate Integrated Waveguide (HMSIW) slot antenna operating at 3.5 GHz and 4.9 GHz is proposed. The two operational bands of the proposed antenna are achieved by combining two HMSIW slot antennas.
W. Chen, J. Yu, Z. Yang, X. Yang
doaj  

NbN Broadband Plasmonic Absorbers for Efficient Hot‐Carrier Injection Toward Improved Solar‐to‐Hydrogen Conversion

Advanced Science, EarlyView.
Niobium nitride (NbN) broadband plasmonic metasurface absorbers provide an efficient platform for solar‐energy conversion through hot‐carrier injection. Quasi‐epitaxial NbN features a low work function of 4.0 eV, reducing the interfacial injection barrier and facilitating charge transfer into adjacent photocatalysts.
Tzu‐Yu Peng, Tse‐Fu Huang, Takeshi Yamaguchi, Jia‐Wern Chen, Hsing‐Yu Kuo, Ying‐Rang Zhuang, Hung Wei Shiu, Seongmin Im, Yang Zhao, Takuo Tanaka, Ho‐Hsiu Chou, Yu‐Jung Lu   +11 more
wiley   +1 more source

A compact single layer dual band microstrip patch antenna for 5G terminal applications

Scientific Reports
In modern applications, the shrinking available space on terminals coupled with the increasing number of frequency bands has prompted the greatest demand for antenna miniaturization and multi-band features.
Xin-Hao Ding, Zhen Tan, Shah Nawaz Burokur   +2 more
doaj   +1 more source