R
Ramón Paniagua-Domínguez
Researcher at Agency for Science, Technology and Research
Publications - 104
Citations - 6049
Ramón Paniagua-Domínguez is an academic researcher from Agency for Science, Technology and Research. The author has contributed to research in topics: Dielectric & Plasmon. The author has an hindex of 34, co-authored 85 publications receiving 4440 citations. Previous affiliations of Ramón Paniagua-Domínguez include Data Storage Institute & Spanish National Research Council.
Papers
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Journal ArticleDOI
High-transmission dielectric metasurface with 2π phase control at visible wavelengths
Ye Feng Yu,Alexander Y. Zhu,Ramón Paniagua-Domínguez,Yuan Hsing Fu,Boris Luk'yanchuk,Arseniy I. Kuznetsov +5 more
TL;DR: In this paper, a uniform array of silicon nanodisks can exhibit close-to-unity transmission at resonance in the visible spectrum, and a single-layer gradient metasurface utilizing this concept is shown to achieve around 45% transmission into the desired order.
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Magnetic and Electric Hotspots with Silicon Nanodimers
Reuben M. Bakker,Dmitry V. Permyakov,Ye Feng Yu,Dmitry Markovich,Ramón Paniagua-Domínguez,Leonard Gonzaga,Anton Samusev,Yuri S. Kivshar,Yuri S. Kivshar,Boris Luk'yanchuk,Arseniy I. Kuznetsov +10 more
TL;DR: For the first time, hotspots of the magnetic field at visible wavelengths for light polarized across the nanodimer's primary axis are observed using near-field scanning optical microscopy.
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Directional lasing in resonant semiconductor nanoantenna arrays
Son Tung Ha,Yuan Hsing Fu,Naresh Kumar Emani,Naresh Kumar Emani,Zhenying Pan,Reuben M. Bakker,Ramón Paniagua-Domínguez,Arseniy I. Kuznetsov +7 more
TL;DR: In this paper, the authors demonstrate directional lasing, with a low threshold and high quality factor, in active dielectric nanoantenna arrays achieved through a leaky resonance excited in coupled gallium arsenide (GaAs) nanopillars.
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A Metalens with a Near-Unity Numerical Aperture
Ramón Paniagua-Domínguez,Ye Feng Yu,Egor Khaidarov,Egor Khaidarov,Sumin Choi,Victor Leong,Reuben M. Bakker,Xinan Liang,Yuan Hsing Fu,Vytautas Valuckas,Leonid A. Krivitsky,Arseniy I. Kuznetsov +11 more
TL;DR: This work, based on diffractive elements that can efficiently bend light at angles as large as 82°, represents a step beyond traditional optical elements and existing flat optics, circumventing the efficiency drop associated with the standard, phase mapping approach.
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Refractive index less than two: photonic nanojets yesterday, today and tomorrow [Invited]
TL;DR: In this article, the authors present some of the phenomena and possible applications arising from the interaction of light with particles with a refractive index less than 2, and draw an overview of the possible applications of such materials, in connection with field enhancement and super resolution nanoscopy.