Results 101 to 110 of about 1,449,714 (389)

Physics of radio antennas

The European Physical Journal Special Topics
Radio antennas are widely used in the field of particle astrophysics in searches for ultra-high energy cosmic rays (UHECR) and neutrinos (UHEN). It is therefore necessary to properly describe the physics of their response. In this article, we summarize the mathematics underlying parameterizations of radio antennas.
openaire   +2 more sources

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valérie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

Wearable Haptic Feedback Interfaces for Augmenting Human Touch

Advanced Functional Materials, EarlyView.
The wearable haptic feedback interfaces enhance user experience in gaming, social media, biomedical instrumentation, and robotics by generating tactile sensations. This review discusses and categorizes current haptic feedback interfaces into force, thermal, and electrotactile stimulation‐based haptic feedback interfaces, elucidating their current ...
Shubham Patel, Zhoulyu Rao, Maggie Yang, Cunjiang Yu   +3 more
wiley   +1 more source

Ionic Liquid‐Based Reversible Metal Electrodeposition for Adaptive Radiative Thermoregulation Under Extreme Environments

Advanced Functional Materials, EarlyView.
A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang, Chenxi Sui, Jiacheng Tian, Genesis Higueros, Ting‐Hsuan Chen, Ronghui Wu, Pei‐Jan Hung, Yang Deng, Natalie Rozman, Willie John Padilla, Po‐Chun Hsu   +10 more
wiley   +1 more source

Semi-Supervised Radio Signal Identification

, 2017
Radio emitter recognition in dense multi-user environments is an important tool for optimizing spectrum utilization, identifying and minimizing interference, and enforcing spectrum policy.
chapelle, chapelle, ester, kingma, lecun, maaten, o'shea, o'shea, srivastava, tieleman   +9 more
core   +1 more source

Radio Interferometer with Simple antennas

, 2023
A Radio interferometer comprises several antennas, spared over a large area. Say ALMA(Atacama Large Millimeter/submillimeter Array), VLA(very large array), VLBA(Very Long Baseline Array), GMRT(Giant Metrewave Radio Telescope), MWA( Murchison Widefield Array), EHT(Event Horizon Telescope), and the SKA(Square Kilometer Array), the name itself speaks ...
openaire   +2 more sources

Performance of the Horizontally Polarized Antennas Used in the Radio Neutrino Observatory in Greenland [PDF]

, 2023
Bryan L. Hendricks, J. A. Aguilar, P. Allison, D. Besson, A. Bishop, O. Botner, Sjoerd Bouma, S. Buitink, W. Castiglioni, Maddalena Cataldo, Brian Clark, A. Coleman, K. Couberly, P. Dasgupta, Simon De Kockere, K. D. de Vries, Cosmin Deaconu, M. A. DuVernois, A. Eimer, C. Glaser, T. Glüsenkamp, A. Hallgren, S. Hallmann, J. Hanson, B. Hendricks, J. Henrichs, N. Heyer, C. Hornhuber, K. Hughes, T. Karg, A. Karle, J. L. Kelley, M. Korntheuer, M. Kowalski, Ilya Kravchenko, Ryan Krebs, R. Lahmann, P. Lehmann, Uzair Abdul Latif, P. Laub, H. Liu, J. Mammo, Matthew Marsee, Z. S. Meyers, Masha Mikhailova, K. Michaels, Katharine Mulrey, Marco Stein Muzio, A. Nelles, Alexander Novikov, A. Nozdrina, Eric Oberla, B. Oeyen, Ilse Plaisier, N. Punsuebsay, Lilly Pyras, D. Ryckbosch, Felix Schlüter, O. Schölten, D. Seckel, Mohammad Ful Hossain Seikh, D. J.B. Smith, J. Stoffels, D. Southall, K. Terveer, S. Toscano, D. Tosi, Dieder Van den Broeck, N. van Eijndhoven, A. G. Vieregg, J. Z. Vischer, C. Welling, D. R. Williams, Stephanie Wissel, Robert Young, A. Zink   +75 more
openalex   +1 more source

High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings

Advanced Functional Materials, EarlyView.
This study introduces a scalable and colored low‐emissivity (low‐e) paint achieved by spraying an ultrathin n‐doped poly(benzodifurandione) (n‐PBDF) coating onto various colored substrates. The low‐e paint enhances thermal regulation by reducing mid‐infrared thermal emissivity to 0.19, thereby stabilizing indoor temperatures across diverse climates ...
Xiaojie Liu, Won‐June Lee, Daniel William Carne, Yanpei Tian, Andrea Felicelli, Yue Lei, Joseph A. Romo, Liyan You, Zixin Xiong, Orlando Gabriel Rivera Gonzalez, Abdulrahman Aljwirah, Qiaoqiang Gan, Jianguo Mei, Xiulin Ruan   +13 more
wiley   +1 more source

Rotary antenna attenuator [PDF]

, 1969
Radio frequency attenuator, having negligible insertion loss at minimum attenuation, can be used for making precise antenna gain measurements.
Dickinson, R. M., Hardy, J. C.
core   +1 more source

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

Advanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens, Kaishuai Zhang, Priscila Cavassin, Arwin Goossens, Jochen Vanderspikken, Tania C. H. Castillo, Demetra Tsokkou, Adam Marks, Arianna Magni, Karrie Weaver, Laurence Lutsen, Sahika Inal, Koen Vandewal, Natalie Banerji, Wouter Maes   +14 more
wiley   +1 more source