1. Enhancement of resolution in microspherical nanoscopy by coupling of fluorescent objects to plasmonic metasurfaces
- Author
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Kylen F. Blanchette, Augustine Urbas, Farzaneh Abolmaali, Aaron Brettin, Dennis E. Walker, Cobey L. McGinnis, Nicholaos I. Limberopoulos, Vasily N. Astratov, Igor Anisimov, Alexey V. Maslov, Yuri E. Nesmelov, Luiz Poffo, University of North Carolina [Charlotte] (UNC), University of North Carolina System (UNC), Air Force Research Laboratory (AFRL), United States Air Force (USAF), Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), Lobachevsky State University [Nizhni Novgorod], 1068050, Center for Metamaterials, NSF I/U CRC, École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), and University of Nizhny Novgorod
- Subjects
010302 applied physics ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,Materials science ,Physics and Astronomy (miscellaneous) ,business.industry ,Resolution (electron density) ,Nanophotonics ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,law.invention ,Photonic metamaterial ,Wavelength ,Optical microscope ,law ,0103 physical sciences ,Optoelectronics ,Surface plasmon resonance ,0210 nano-technology ,business ,Plasmon ,Localized surface plasmon - Abstract
International audience; The resolution of microsphere-based nanoscopy is studied using fluorescently labeled nanospheres and F-actin protein filaments with the emission coupled to the localized surface plasmon resonances in the underlying Au nanodisk arrays. Virtual imaging is performed through high-index microspheres embedded in plastic coverslips placed in contact with the nanoscale objects. For 150 and 200 nm periods of nanoplasmonic arrays, the imaging has a solid immersion lens-limited resolution, whereas for shorter periods of 80 and 100 nm, the resolution was found to increase up to ∼λ/7, where λ is the emission wavelength. The results cannot be interpreted within a framework of a regular localized plasmonic structured illumination microscopy since the array period was significantly shorter than the wavelength and postimaging processing was not used. It is hypothesized that the observed super-resolution is based on coupling of the emission of nanoscale objects to strongly localized near-field maxima in the adjacent plasmonic metasurfaces followed by evanescent coupling to high-index microspheres.
- Published
- 2019
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