Results 81 to 90 of about 1,627,963 (226)

Universal Electromagnetic Reference Skin Model for APD Evaluation at 6–100 GHz

IEEE Journal of Microwaves
The increasing use of the upper part of the microwave spectrum for wireless communications requires appropriate methods and instrumentation for user exposure assessment.
Artem Boriskin, Massinissa Ziane, Mariem Mafamane, Shoaib Muhammad Anwar, Lars Jacob Foged, Maxim Zhadobov   +5 more
doaj   +1 more source

Merging of optoelectronic techniques for microwave signal generation [PDF]

, 2007
This paper describes some recent evolutions about optical generation of microwave signals. Among these, multiloop ring oscillator and harmonic generation allow both rise in frequency and wide tunability. Besides, using microresonators and optical sources
Le Kernec, Arnaud, A. Le Kernec, M. Varon, Mollier, Jean-Claude, Varón-Durán, Margarita, J.-C. Mollier   +5 more
core   +1 more source

Fabrication of flexible composite electrodes and their application in flexible supercapacitors for wearable electronic devices

FlexMat, EarlyView.
This review surveys current progress in composite flexible electrodes for flexible supercapacitors, emphasizing how structural engineering and material synergy enhance both mechanical compliance and electrochemical performance. It discusses fabrication strategies, emerging application scenarios, and ongoing challenges, offering updated insights that ...
Weikang Wang, Qing Liu, Ang Lv, Shuai Zhou, Chunlei Zhang, Luping Zhang, Liming Li, Weiwei Zhao, Yuchun Tang, Fei Huang   +9 more
wiley   +1 more source

Bee pollen as functional food and environmental bioindicator: current evidence and future challenges

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Bee pollen (BP), a plant‐derived product collected by honey bees, is increasingly promoted as a functional food due to its content of proteins, essential amino acids, lipids, vitamins, minerals, and bioactive compounds such as polyphenols and flavonoids.
Luigi Parrotta, Stefano Del Duca
wiley   +1 more source

Integration of Optical and Microwave Satellite Data for Monitoring Vegetation Status in Sorghum Fields

Remote Sensing
Despite the abundance of available studies on optical and microwave methods devoted to investigating agricultural crop conditions, there is a lack of research that explores the integration between microwave and optical data and the link between ...
Simone Pilia, Giacomo Fontanelli, Leonardo Santurri, Enrico Palchetti, Giuliano Ramat, Fabrizio Baroni, Emanuele Santi, Alessandro Lapini, Simone Pettinato, Simonetta Paloscia   +9 more
doaj   +1 more source

Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets

Laser &Photonics Reviews, EarlyView.
Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier, Khaleda Mallick, Abhinand Venugopalan, Milind Bagul, Gouri Krishnan, Thomas Schneider   +5 more
wiley   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source

Microwave radiometric system "Zir" for customs services

Технологія та конструювання в електронній апаратурі, 2003
A description is provided of the multichannel microwave radiometric vision system "Zir," designed for use by security and customs services. The paper discusses the system’s structure, operating principles, specific features of image formation, and the ...
S. A. Shilo, V. M. Chmil, V. A. Bereznoy, Yu. N. Muskin, D. M. Bychkov, A. S. Gavrilenko, V. I. Kuzhel, A. S. Levda, V. M. Bykov   +8 more
doaj  

The Microwave Rainbow: How Geometry Paints Colours in Microwave Vision

Microwave vision from spaceborne synthetic aperture radar (SAR) provides an all-weather, day-and-night capability to observe Earth, yet much of the information encoded in its signals remains undeciphered. Recent high-resolution imagery has revealed a striking phenomenon: man-made structures systematically appear in a spectrum of colours, the physical ...
openaire   +2 more sources

Iron(III) ion reinforced P(NiPAAm‐co‐AA) beads as tunable smart organogels

Polymer International, EarlyView.
Macroporous beads of PNiPAAm‐co‐AA copolymers were further crosslinked by iron(III) ions. The resulting beads are mechanically robust and reversibly responsive to a change of solvent from ethanol to ethyl acetate with half‐lives in the range of minutes.
Johannes Gmeiner, Jonah Hasse, Gerrit A Luinstra   +2 more
wiley   +1 more source