Results 121 to 130 of about 382,834 (345)

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

A Study on the Radio Propagation in the Korean Ionosphere [PDF]

Journal of Astronomy and Space Sciences, 1992
The effects of the ionosphere on the radio wave propagation are scattering of radio waves, attenuation, angle error, ranging error, and time delay. If ionospheric conditions are suitable, the charged particles can remove energy from radio waves and thus ...
Seok-Hee Bae, Kyu-Hong Choi, Jai-Rim Yuk, Hong-Ik Kim, Kyoung W. Min   +4 more
doaj  

Modulation of radio frequency signals by ULF waves [PDF]

, 2007
C. L. Waters, T. K. Yeoman, M. D. Sciffer, P. V. Ponomarenko, D. M. Wright   +4 more
openalex   +1 more source

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

Advanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang, Gwendoline A. E. Anand, Rubaiyet Haque, Dylan A. Chiaro, Mona Sharma, Andrew R. Williams, Frank Niklaus, Daryl W. Yee, Gavin M. King, Anpan Han   +9 more
wiley   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

The role of natural E-region plasma turbulence in the enhanced absorption of HF radio waves in the auroral ionosphere:Implications for RF heating of the auroral electrojet

Annales Geophysicae
Physical processes which affect the absorption of radio waves passing through the auroral E-region when Farley-Buneman irregularities are present are examined.
T. R. Robinson
doaj  

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Upper limits on gravitational wave emission from 78 radio pulsars [PDF]

, 2007
B. Abbott, R. Abbott, R. X. Adhikari, J. Agresti, P. Ajith, B. Allen, R. Amin, S. B. Anderson, W. G. Anderson, M. Arain, M. Araya, H. Armandula, M. C. B. Ashley, S. M. Aston, P. Aufmuth, C. Aulbert, S. Bagnasco, S. W. Ballmer, H. Bantilan, B. C. Barish, C. Barker, D. Barker, B. Barr, B. Barr, M. A. Barton, K. Bayer, Krzysztof Belczyński, J. Betzwieser, P. T. Beyersdorf, B. Bhawal, I. A. Bilenko, G. Billingsley, R. Biswas, E. Black, K. Blackburn, Lindy Blackburn, D. G. Blair, B. Bland, J. Bogenstahl, L. Bogue, R. Bork, V. Boschi, S. Bose, P. R. Brady, V. B. Braginsky, J. E. Brau, M. Brinkmann, A. F. Brooks, D. Brown, A. Bullington, A. Bunkowski, A. Buonanno, O. Burmeister, D. Busby, William E. Butler, Robert L. Byer, L. Cadonati, G. Cagnoli, J. B. Camp, J. K. Cannizzo, K. C. Cannon, C. A. Cantley, J. Cao, L. Cardenas, K. Carter, M. M. Casey, Giuseppe Castaldi, C. Cepeda, E. Chalkey, P. Charlton, S. Chatterji, S. Chelkowski, Y Chen, F. Chiadini, A. Taracchini, E. Chin, J. H. Chow, N. Christensen, J. A. Clark, P. Cochrane, Thomas Cokelaer, C. N. Colacino, R. L. Coldwell, R. Conte, D. Cook, T. R. Corbitt, D. M. Coward, D. Coyne, J. D. E. Creighton, J. D. E. Creighton, R. P. Croce, D. R. M. Crooks, A. M. Cruise, A. Cumming, James Dalrymple, E. D’Ambrosio, K. Danzmann, G. S. Davies, D. DeBra, J. Degallaix   +99 more
openalex   +1 more source

Radar studies of the moon Quarterly progress report no. 2, 1 Feb. - 30 Apr. 1966 [PDF]

Radar study of lunar surface - scattering of radio waves, polarization observations, shadowing effect on wave backscattering, and computer program for Haystack radar ...

core   +1 more source

Stabilizing Cationic Palladium Single‐Atom Sites on Heteroatom‐Doped Carbon for Selective Hydrogen Peroxide Electrosynthesis

Advanced Functional Materials, EarlyView.
In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato, Alexander Gunnarson, Hannaneh Hosseini, Xiangyu You, Pallabi Bhuyan, Ji Sik Choi, Hyo Sang Jeon, Xingshen Zhao, Julio C. Lourenço, Sumin Lim, Huize Wang, Ana Guilherme Buzanich, Martin Radtke, Paul Paciok, Marcos R.V. Lanza, Ferdi Schüth, Marc Ledendecker   +16 more
wiley   +1 more source