Journal ArticleDOI
All-Dielectric Silicon Nanogap Antennas To Enhance the Fluorescence of Single Molecules
Raju Regmi,Raju Regmi,Johann Berthelot,Pamina M. Winkler,Mathieu Mivelle,Julien Proust,Frédéric Bedu,Igor Ozerov,Thomas Begou,Julien Lumeau,Hervé Rigneault,Maria F. Garcia-Parajo,Sébastien Bidault,Jérôme Wenger,Nicolas Bonod +14 more
TLDR
This work demonstrates that all-silicon nanoantennas are a valid alternative to plasmonic devices for enhanced single molecule fluorescence sensing, with the additional key advantages of reduced nonradiative quenching, negligible heat generation, cost-efficiency, and complementary metal-oxide-semiconductor (CMOS) compatibility.Abstract:
Plasmonic antennas have a profound impact on nanophotonics as they provide efficient means to manipulate light and enhance light–matter interactions at the nanoscale. However, the large absorption losses found in metals can severely limit the plasmonic applications in the visible spectral range. Here, we demonstrate the effectiveness of an alternative approach using all-dielectric nanoantennas based on silicon dimers to enhance the fluorescence detection of single molecules. The silicon antenna design is optimized to confine the near-field intensity in the 20 nm nanogap and reach a 270-fold fluorescence enhancement in a nanoscale volume of λ3/1800 with dielectric materials only. Our conclusions are assessed by combining polarization resolved optical spectroscopy of individual antennas, scanning electron microscopy, numerical simulations, fluorescence lifetime measurements, fluorescence burst analysis, and fluorescence correlation spectroscopy. This work demonstrates that all-silicon nanoantennas are a valid alternative to plasmonic devices for enhanced single molecule fluorescence sensing, with the additional key advantages of reduced nonradiative quenching, negligible heat generation, cost-efficiency, and complementary metal–oxide–semiconductor (CMOS) compatibility.read more
Citations
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Journal ArticleDOI
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.
Journal ArticleDOI
All-Dielectric Colored Metasurfaces with Silicon Mie Resonators
TL;DR: A technique to imprint colored images based on silicon nanoparticles that host low-order electric and magnetic Mie resonances that offers the advantage to use cost-effective, reliable, and sustainable materials to provide vivid color spanning the whole visible spectrum.
Journal ArticleDOI
Single-Photon Nanoantennas
TL;DR: This perspective discusses what the state of the art is in terms of fluoresent brightness enhancements, Purcell factors, and directivity control on the level of single photons in single-photon nanoantennas.
Journal ArticleDOI
Bridging the Gap between Dielectric Nanophotonics and the Visible Regime with Effectively Lossless Gallium Phosphide Antennas
Javier Cambiasso,Gustavo Grinblat,Yi Li,Aliaksandra Rakovich,Emiliano Cortés,Stefan A. Maier +5 more
TL;DR: It is shown that GaP dimers with 35 nm gap can enhance up to 3600 times the fluorescence emission of dyes located in the gap of the nanoantenna, which is to the best of the authors' knowledge the highest yet achieved value for a single nano-object in the optical region.
Journal ArticleDOI
Lasing action in active dielectric nanoantenna arrays.
Son Tung Ha,Yuan Hsing Fu,Naresh Kumar Emani,Zhenying Pan,Reuben M. Bakker,Ramón Paniagua-Domínguez,Arseniy I. Kuznetsov +6 more
TL;DR: Directional lasing is demonstrated, 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.
References
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Journal ArticleDOI
Plasmonics for extreme light concentration and manipulation.
Jon A. Schuller,Edward S. Barnard,Wenshan Cai,Young Chul Jun,Justin S. White,Mark L. Brongersma +5 more
TL;DR: The basic concepts behind plasmonics-enabled light concentration and manipulation are discussed, an attempt to capture the wide range of activities and excitement in this area is made, and possible future directions are speculated on.
Journal ArticleDOI
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Journal ArticleDOI
Antennas for light
Lukas Novotny,Niek F. van Hulst +1 more
TL;DR: Optical antennas are devices that convert freely propagating optical radiation into localized energy, and vice versa as mentioned in this paper, and hold promise for enhancing the performance and efficiency of photodetection, light emission and sensing.
Journal ArticleDOI
Ultra-high-Q toroid microcavities on a chip
TL;DR: This work demonstrates a process for producing silica toroid-shaped microresonators-on-a-chip with Q factors in excess of 100 million using a combination of lithography, dry etching and a selective reflow process, representing an improvement of nearly four orders of magnitude over previous chip-based resonators.
Journal ArticleDOI
Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna
TL;DR: In this paper, a 1,340-fold increase in single-molecule fluorescence was observed from a gold bowtie nano-antenna, caused by enhanced absorption and an increased radiative emission rate.