Results 41 to 50 of about 83,780 (236)

Low-error and broadband microwave frequency measurement in a silicon chip

, 2015
Instantaneous frequency measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology.
Aalto, Timo, Casas-Bedoya, Alvaro, Eggleton, Benjamin J., Harjanne, Mikko, Kapulainen, Markku, Marpaung, David, Morrison, Blair, Pagani, Mattia, Zhang, Yanbing   +8 more
core   +1 more source

Space-division multiplexing for fiber-wireless communications

, 2018
We envision the application of optical Space-division Multiplexing (SDM) to the next generation fiber-wireless communications as a firm candidate to increase the end user capacity and provide adaptive radiofrequency-photonic interfaces.
Barrera, David, Garcia, Sergi, Gasulla, Ivana, Hervas, Javier, Sales, Salvador   +4 more
core   +1 more source

A Survey on Robot Semantic Navigation Systems for Indoor Environments

Applied Sciences, 2023
Robot autonomous navigation has become a vital area in the industrial development of minimizing labor-intensive tasks. Most of the recently developed robot navigation systems are based on perceiving geometrical features of the environment, utilizing ...
Raghad Alqobali, Maha Alshmrani, Reem Alnasser, Asrar Rashidi, Tareq Alhmiedat, Osama Moh’d Alia   +5 more
doaj   +1 more source

Pattern Formation in Semiconductors [PDF]

, 1999
In semiconductors, nonlinear generation and recombination processes of free carriers and nonlinear charge transport can give rise to non-equilibrium phase transitions.
BK Ridley, CD Jeffries, F.-J. Niedernostheide, IB Levinson, J. Hirschinger, M Kozhevnikov, PT Landsberg, S.D. Ganichev, V. Novák, V. V. Bel'kov, W Eberle, W. Prettl   +11 more
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

Edge detection by spiral phase contrast imaging at terahertz frequencies

Electronics Letters, 2021
This paper proposes the spiral phase contrast (SPC) imaging at terahertz (THz) frequencies to achieve the target edge detection. The THz SPC imaging is built based on a classical 4f imaging system, and a spiral phase plate is placed in the Fourier plane ...
Hui Liu, Shiyou Wu, Meng Zhao, Shen Zheng, Chao Li, Guangyou Fang   +5 more
doaj   +1 more source

Unsupervised domain adaptation for Global Precipitation Measurement satellite constellation using Cycle Generative Adversarial Nets

Environmental Data Science, 2022
Artificial intelligence has provided many breakthroughs in the field of computer vision. The fully convolutional networks U-Net in particular have provided very promising results in the problem of retrieving rain rates from space-borne observations, a ...
Vibolroth Sambath, Nicolas Viltard, Laurent Barthès, Audrey Martini, Cécile Mallet   +4 more
doaj   +1 more source

Smart Catheters for Diagnosis, Monitoring, and Therapy

Advanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman, Samiha Ahmed, Majed Othman Althumayri, Megan Guy, Darlenne Chavez Lugo, Frances S. Ligler, George T. Ligler, Rahmi Oklu, Hiroshi Kawahira, Michael J. McShane, Jun Kameoka, Jonathan Bova, Hatice Ceylan Koydemir   +12 more
wiley   +1 more source

Geometric Continuity Characterization of Urban Buildings in SAR 3D Imaging Domain and Few-tracks 3D Imaging

Leida xuebao
Synthetic Aperture Radar (SAR) is an active microwave sensing technology capable of all-weather, day-and-night operation, making it a critical source of Earth observation data.
Fengming HU, Jifan TIAN, Guozhen CHENG, Feng XU   +3 more
doaj   +1 more source

Effects of microwave irradiation on the parameters of hydrogel contact lenses [PDF]

, 2003
Ten brands of hydrogel contact lenses were selected from five of the six British Approved Name lens classification groups to test in vitro the effects of repeated heat disinfection by means of microwave irradiation.
Crabbe, A, Thompson, P
core   +1 more source