Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Andrea Alu"'
Autor:
Younes Raadi, Andrea Alu
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-13 (2022)
Recently, it was revealed that conventional gradient metasurfaces are fundamentally limited on their overall efficiency to reroute the impinging waves towards arbitrary directions in reflection and transmission. Their efficiency is particularly limit
Externí odkaz:
https://doaj.org/article/2431187808814d68b38618be1f7d3fda
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 2, Pp 585-590 (2021)
Recent advances in communication systems require densely packed integrated antennas, making the system subject to undesired interferences. Cloaking and scattering cancellation using metamaterials have been proposed as interesting routes towards the s
Externí odkaz:
https://doaj.org/article/27f86321b54b442b9f8ff7844ca17f83
Publikováno v:
IEEE Access, Vol 9, Pp 48769-48776 (2021)
Recently, the topological properties of composite vortices, i.e., the superposition between vortex modes of a different order, have proven effective in manipulating the radiation properties of patch antennas and making them suitable for new operative
Externí odkaz:
https://doaj.org/article/1547d2b365d342a3a544a4863296ce7c
Autor:
Peining Li, Guangwei Hu, Irene Dolado, Mykhailo Tymchenko, Cheng-Wei Qiu, Francisco Javier Alfaro-Mozaz, Fèlix Casanova, Luis E. Hueso, Song Liu, James H. Edgar, Saül Vélez, Andrea Alu, Rainer Hillenbrand
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Phenomena such as polariton canalization and hyperlensing can be found at the transition from hyperbolic to elliptical dispersion. Here, the authors investigate this transition using hyperspectral infrared nanoimaging of polaritons in a grating of he
Externí odkaz:
https://doaj.org/article/831194c6cbe4421ea6e7501a09fcf122
Autor:
Tolga Dinc, Mykhailo Tymchenko, Aravind Nagulu, Dimitrios Sounas, Andrea Alu, Harish Krishnaswamy
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Optical non-reciprocity achieved through refractive index modulation can have its challenges and limitations. Here, Dinc et al. introduce the concept of non-reciprocity based on synchronized spatio-temporal modulation of conductivity to achieve diffe
Externí odkaz:
https://doaj.org/article/fff4365ea88e4b9dbf65d242ec8d38b6
Publikováno v:
New Journal of Physics, Vol 19, Iss 5, p 055002 (2017)
We demonstrate that an acoustic Kagome lattice formed by an array of interconnected resonant cavities exhibits a new class of topological states protected by C _3 symmetry, and it is characterised by a topological invariant in the form of a winding n
Externí odkaz:
https://doaj.org/article/67a6a62d410446a1811f5f13c38faeb2
Autor:
Yang Chen, Shuhang Qian, Kai Wang, Xiangyuan Xing, Andrew Wee, Kian Ping Loh, Bing Wang, Dong Wu, Jiaru Chu, Andrea Alu, Peixiang Lu, Cheng-Wei Qiu
Publikováno v:
Nature Nanotechnology. 17:1178-1182
Autor:
Andrea Alu, Sven Burger, Shanhui Fan, Sebastien Cueff, Jean-Yves Duboz, Felix Binkowski, Adam Overvig, Karim Achouri, Remi Colom, Elena Mikheeva, Patrice Genevet
Optical components interact with light through radiative channels, and as such they experience intrinsic losses, giving rise to complex-valued eigenfrequencies and singularities. Spatial inversion symmetry breaking -implemented herein by controlling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8968ed372e3e7f06b1e2344e247e7a72
https://doi.org/10.1364/opticaopen.22828976
https://doi.org/10.1364/opticaopen.22828976
Publikováno v:
Optics Letters.
Autor:
Joseph Matson, Sören Wasserroth, Xiang Ni, Maximilian Obst, Katja Diaz-Granados, Giulia Carini, Enrico Renzi, Emanuele Galiffi, Thomas G. Folland, Lukas Eng, J. Klopf, Stefan Mastel, Sean Armster, Vincent Gambin, Martin Wolf, Susanne C. Kehr, Andrea Alu, Alexander Paarmann, Joshua Caldwell
Publikováno v:
Research Square
Structural anisotropy in a crystal is one of the key tools for controlling light propagation. The correlation between crystalline structure and the interaction with light is strongest in the infrared spectral regime, where optical frequencies overlap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::668d64c55987407a4e83bc56b55461eb
https://hdl.handle.net/21.11116/0000-000C-8960-D21.11116/0000-000C-8962-B
https://hdl.handle.net/21.11116/0000-000C-8960-D21.11116/0000-000C-8962-B