Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Stefano Vezzoli"'
Autor:
Romain Tirole, Stefano Vezzoli, Dhruv Saxena, Shu Yang, T. V. Raziman, Emanuele Galiffi, Stefan A. Maier, John B. Pendry, Riccardo Sapienza
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Time-varying metamaterials rely on large and fast changes of the linear permittivity. Beyond the linear terms, however, the effect of a non-perturbative modulation of the medium on harmonic generation remains largely unexplored. In this work
Externí odkaz:
https://doaj.org/article/93713b4baca545d3aeab338787561355
Autor:
Mirco Govoni, Michele Bassi, Stefano Vezzoli, Germano Lucci, Aida Emirova, Marie Anna Nandeuil, Stefano Petruzzelli, Gera L. Jellema, Ebenezer K. Afolabi, Brendan Colgan, Brian Leaker, Oliver Kornmann, Kai Michael Beeh, Henrik Watz, Dave Singh
Publikováno v:
Respiratory Research, Vol 21, Iss 1, Pp 1-11 (2020)
Abstract Background Although phosphodiesterase-4 (PDE4) inhibitors have been shown to reduce COPD exacerbation rate, their biological mechanism of action is not completely elucidated at the molecular level. We aimed to characterise the whole genome g
Externí odkaz:
https://doaj.org/article/329954abcd014a2482d1ae81f7bede63
Publikováno v:
APL Photonics, Vol 5, Iss 7, Pp 071302-071302-6 (2020)
The efficient excitation of quantum sources such as quantum dots or single molecules requires high numerical aperture optics, which is often a challenge in cryogenics or in ultrafast optics. Here, we propose a 3.2 μm wide parabolic mirror, with 0.8
Externí odkaz:
https://doaj.org/article/e3dab6a85361472a990c4ab780d75465
Autor:
Vincenzo Bruno, Stefano Vezzoli, Clayton DeVault, Enrico Carnemolla, Marcello Ferrera, Alexandra Boltasseva, Vladimir M. Shalaev, Daniele Faccio, Matteo Clerici
Publikováno v:
Applied Sciences, Vol 10, Iss 4, p 1318 (2020)
The ultrafast changes of material properties induced by short laser pulses can lead to a frequency shift of reflected and transmitted radiation. Recent reports highlight how such a frequency shift is enhanced in spectral regions where the material fe
Externí odkaz:
https://doaj.org/article/ac54e61ec4014e198529abc1860986d0
Autor:
Vincenzo Bruno, Stefano Vezzoli, Clayton DeVault, Thomas Roger, Marcello Ferrera, Alexandra Boltasseva, Vladimir M. Shalaev, Daniele Faccio
Publikováno v:
Micromachines, Vol 11, Iss 1, p 110 (2020)
Interferometric effects between two counter-propagating beams incident on an optical system can lead to a coherent modulation of the absorption of the total electromagnetic radiation with 100% efficiency even in deeply subwavelength structures. Coher
Externí odkaz:
https://doaj.org/article/991f5eab780148debcea63fca0030b27
Autor:
Panaiot G. Zotev, Yue Wang, Daniel Andres‐Penares, Toby Severs‐Millard, Sam Randerson, Xuerong Hu, Luca Sortino, Charalambos Louca, Mauro Brotons‐Gisbert, Tahiyat Huq, Stefano Vezzoli, Riccardo Sapienza, Thomas F. Krauss, Brian D. Gerardot, Alexander I. Tartakovskii
Publikováno v:
Laser & Photonics Reviews.
Numerous optical phenomena and applications have been enabled by nanophotonic structures. Their current fabrication from high refractive index dielectrics, such as silicon or gallium phosphide, pose restricting fabrication challenges, while metals, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adb49df7a78d92873925bfb77b04a71b
https://doi.org/10.1002/lpor.202200957
https://doi.org/10.1002/lpor.202200957
Autor:
Romain Tirole, Emanuele Galiffi, Jakub Dranczewski, Taran Attavar, Benjamin Tilmann, Yao-Ting Wang, Paloma A. Huidobro, Andrea Alú, John B. Pendry, Stefan A. Maier, Stefano Vezzoli, Riccardo Sapienza
We report a switchable time-varying mirror, composed of an indium-tin-oxide–gold bilayer, displaying a tenfold modulation of reflectivity (ΔR≈0.6), which saturates for a driving-pump intensity Ipump≈100GW/cm2. Upon interacting with the saturat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e49d86bd0e023034a56922f34e7616e8
http://hdl.handle.net/10044/1/100982
http://hdl.handle.net/10044/1/100982
Autor:
Emanuele Galiffi, Romain Tirole, Shixiong Yin, Huanan Li, Stefano Vezzoli, Paloma A. Huidobro, Mário G. Silveirinha, Riccardo Sapienza, Andrea Alù, J. B. Pendry
Publikováno v:
Advanced Photonics. 4
Time-varying media have recently emerged as a new paradigm for wave manipulation, thanks to thesynergy between the discovery of novel, highly nonlinear materials, such as epsilon-near-zero materials, and the questfor novel wave applications, such as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::155803e6012d87a0bccfc40711a11df3
https://doi.org/10.1117/1.ap.4.1.014002
https://doi.org/10.1117/1.ap.4.1.014002
Autor:
Sergii Morozov, Stefano Vezzoli, Alina Myslovska, Alessio Di Giacomo, N. Asger Mortensen, Iwan Moreels, Riccardo Sapienza
Publikováno v:
NANOSCALE
Giant shell CdSe/CdS quantum dots are bright and flexible emitters, with near-unity quantum yield and suppressed blinking, but their single photon purity is reduced by efficient multiexcitonic emission. We report the observation, at the single dot le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fedee631fbfbebe21e4fc94f024dd00
http://arxiv.org/abs/2111.09090
http://arxiv.org/abs/2111.09090
Autor:
Jakub Dranczewski, Riccardo Sapienza, John B. Pendry, Romain Tirole, Emanuele Galiffi, Stefano Vezzoli, Stefan A. Maier, Taran Attavar
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2021.
Time-varying metasurfaces have recently emerged as a new topic of interest for control of light at the nanoscale and exploration of fundamental physics. We demonstrate time diffraction from a time slit in an unstructured metasurface. In a pump-probe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dc5cbb05194dab6560bea5b89e60585
https://doi.org/10.1117/12.2593924
https://doi.org/10.1117/12.2593924