Results 11 to 20 of about 1,619,536 (329)

Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum [PDF]

Nature Communications, 2021
Optical metasurfaces with high quality factors (Q-factors) of chiral resonances can boost substantially light-matter interaction for various applications of chiral response in ultrathin, active, and nonlinear metadevices. However, current approaches lack
Tan Shi, Zi-lan Deng, Guangzhou Geng, Xianzhi Zeng, Yixuan Zeng, Guangwei Hu, A. Overvig, Junjie Li, C. Qiu, A. Alú, Y. Kivshar, Xiangping Li   +11 more
semanticscholar   +1 more source

Quantum approximate optimization of non-planar graph problems on a planar superconducting processor [PDF]

Nature Physics, 2020
Faster algorithms for combinatorial optimization could prove transformative for diverse areas such as logistics, finance and machine learning. Accordingly, the possibility of quantum enhanced optimization has driven much interest in quantum technologies.
F. Arute, K. Arya, R. Babbush, D. Bacon, J. Bardin, R. Barends, S. Boixo, M. Broughton, B. Buckley, D. Buell, B. Burkett, N. Bushnell, Yu Chen, Zijun Chen, B. Chiaro, R. Collins, W. Courtney, S. Demura, A. Dunsworth, E. Farhi, A. Fowler, B. Foxen, C. Gidney, M. Giustina, R. Graff, S. Habegger, M. Harrigan, A. Ho, Sabrina Hong, Trent Huang, L. Ioffe, S. Isakov, E. Jeffrey, Zhang Jiang, Cody Jones, D. Kafri, K. Kechedzhi, J. Kelly, Seon Kim, P. Klimov, A. Korotkov, F. Kostritsa, D. Landhuis, P. Laptev, Mike Lindmark, M. Leib, E. Lucero, O. Martin, J. Martinis, J. McClean, M. McEwen, A. Megrant, X. Mi, M. Mohseni, W. Mruczkiewicz, J. Mutus, O. Naaman, M. Neeley, C. Neill, F. Neukart, H. Neven, M. Niu, T. O’Brien, B. O’Gorman, E. Ostby, A. Petukhov, Harald Putterman, C. Quintana, P. Roushan, N. Rubin, D. Sank, K. Satzinger, Andrea Skolik, V. Smelyanskiy, D. Strain, Michael Streif, Kevin J Sung, M. Szalay, A. Vainsencher, T. White, Z. Yao, P. Yeh, Adam Zalcman, Leo Zhou   +83 more
semanticscholar   +1 more source

Principles of Planar Near-Field Antenna Measurements

, 2023
This single volume provides a comprehensive introduction and explanation of both the theory and practice of 'Planar Near-Field Antenna Measurement' from its basic postulates and assumptions, to the intricacies of its deployment in complex and demanding ...
S. Gregson, J. McCormick, C. Parini
semanticscholar   +1 more source

Achieving Ultrahigh‐Rate Planar and Dendrite‐Free Zinc Electroplating for Aqueous Zinc Battery Anodes

Advances in Materials, 2022
Despite being one of the most promising candidates for grid‐level energy storage, practical aqueous zinc batteries are limited by dendrite formation, which leads to significantly compromised safety and cycling performance.
S. Pu, Chen Gong, Yuanbo T. Tang, Z. Ning, Junliang Liu, Sheng-Guo Zhang, Yichun Yuan, Dominic L. R. Melvin, Sixie Yang, Liquan Pi, John‐Joseph Marie, Bingkun Hu, Max Jenkins, Zixuan Li, Boyang Liu, S. Tsang, T. J. Marrow, R. Reed, Xiangwen Gao, P. Bruce, A. Robertson   +20 more
semanticscholar   +1 more source

Planar Four-Port Dual Circularly-Polarized MIMO Antenna for Sub-6 GHz Band

IEEE Access, 2020
In this work, two configurations (Config.-A and Config.-B) of planar four-port dual circularly-polarized (CP) multiple-input-multiple-output (MIMO) antenna are proposed for sub-6 GHz (3.4-3.8 GHz) applications.
Shobhit Saxena, Binod Kumar Kanaujia, Santanu Dwari, Sachin Kumar, Hyun Chul Choi, Kang Wook Kim   +5 more
doaj   +1 more source

Applying the Czédli-Schmidt Sequences to Congruence Properties of Planar Semimodular Lattices

Discussiones Mathematicae - General Algebra and Applications, 2021
Following Grätzer and Knapp, 2009, a planar semimodular lattice L is rectangular, if the left boundary chain has exactly one doubly-irreducible element, cl, and the right boundary chain has exactly one doubly-irreducible element, cr, and these elements ...
Grätzer G.
doaj   +1 more source

Broadband Compact Quasi Yagi Antenna for UHF Wireless Communication Systems with Enhanced Performance at UHF ISM Bands [PDF]

Radioengineering, 2020
In this study, a broadband planar quasi Yagi antenna operated at ultra-high frequency (UHF) band is presented. The performance of the antenna is particularly improved for two popular UHF frequencies of 433 and 868 MHz used in several wireless ...
Y. Bakirli, A. Selek, M. Secmen
doaj  

Enhanced photovoltage for inverted planar heterojunction perovskite solar cells

Science, 2018
Perovskite layers make the grade Inverted planar perovskite solar cells offer opportunities for a simplified device structure compared with conventional mesoporous titanium oxide interlayers.
Deying Luo, Wenqiang Yang, Zhiping Wang, A. Sadhanala, Qin Hu, Rui Su, Ravichandran Shivanna, G. Trindade, J. Watts, Zhaojian Xu, Tanghao Liu, Ke Chen, Fengjun Ye, Pan Wu, Lichen Zhao, Jiang Wu, Yongguang Tu, Yifei Zhang, Xiaoyu Yang, Wei Zhang, R. Friend, Q. Gong, H. Snaith, Rui Zhu   +23 more
semanticscholar   +1 more source

Abelian Equations and Rank Problems for Planar Webs [PDF]

, 2006
We find an invariant characterization of planar webs of maximum rank. For 4-webs, we prove that a planar 4-web is of maximum rank three if and only if it is linearizable and its curvature vanishes. This result leads to the direct web-theoretical proof of
Goldberg, Vladislav V., Lychagin, Valentin V.   +1 more
core   +3 more sources

Every Planar Map Is Four Colorable

Mathematical Solitaires & Games, 2019
As has become standard, the four color map problem will be considered in the dual sense as the problem of whether the vertices of every planar graph (without loops) can be colored with at most four colors in such a way that no pair of vertices which lie ...
K. Appel, W. Haken
semanticscholar   +1 more source