3 results on '"Patrick Hsia"'
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2. A Comparative Investigation of Plasmonic Properties between Tunable Nanoobjects and Metallized Nanoprobes for Optical Spectroscopy
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De Bettignies, Gaëtan Lévêque, Joachim Schreiber, Marc Chaigneau, Steve Arscott, Thierry Melin, Patrick Hsia, Damien Eschimese, Dominique Deresmes, François Vaurette, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), HORIBA Scientific [France], Centrale de Micro Nano Fabrication - IEMN (CMNF-IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Raman Division, HORIBA France SAS [Villeneuve d'Ascq], HORIBA Scientific [France]-HORIBA Scientific [France], Nano and Microsystems - IEMN (NAM6 - IEMN), Physique-IEMN (PHYSIQUE-IEMN), Renatech Network, ANR-16-CE09-0029,TIPTOP_1,Fabrication de leviers de microscopie à force atomique pour des applications de spectroscopie Raman à exaltation de pointe(2016), ANR-11-EQPX-0015,Excelsior,Centre expérimental pour l'étude des propriétés des nanodispositifs dans un large spectre du DC au moyen Infra-rouge.(2011), Physique - IEMN (PHYSIQUE - IEMN), Centrale de Micro Nano Fabrication - IEMN (CMNF - IEMN), ACKNOWLEDGMENTSWe acknowledge fruitful discussions with P. Tilmant, C. Ha, and O. Kerivel. This work was performed by using the facilities of the ́French RENATECH network and of the ExCELSiOR Nano-science Characterization Center. We acknowledge financial support from the French Region Hauts de France under ́contracts DOS0025370/00 and 17007720 and from the National Research Agency (ANR) under contract ANR-16-CE09-0029. D.E. acknowledges financial support from the ANRT via a CIFRE grant no. 2015/0803., and RENATECH network
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Materials science ,Physics::Optics ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,plasmonics ,symbols.namesake ,nano-antennas ,Emission spectrum ,Physical and Theoretical Chemistry ,tip-enhanced optical spectroscopy ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,Spectroscopy ,Plasmon ,Total internal reflection ,atomic force microscopy ,Scattering ,business.industry ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry ,General Energy ,Nanolithography ,localized surface plasmons ,symbols ,Optoelectronics ,nanofabrication ,total-internal-reflection scattering spectroscopy ,0210 nano-technology ,Raman spectroscopy ,business ,dark-field imaging ,Localized surface plasmon - Abstract
International audience; In order to evaluate the optical efficiency of tip-based probes for future tip-enhanced optical spectroscopy applications, we developed an experimental setup based on the coupling of an achromatic inverted microscope equipped with a total internal reflection objective and an atomic force microscopy (AFM) head. This spectroscopic tool has been validated using individual nanofabricated antennas (gold nanodisks/nanocones) on a glass substrate which act as nanoresonators based on localized surface plasmons. Spectrally tunable transverse electric and magnetic plasmonic resonances are identified and are in excellent agreement with numerical calculations performed as a function of the nanoantenna geometry and size. We investigated a series of state-of-the-art gold-coated AFM probes, which are commonly used for tip-enhanced (Raman spectroscopy) optical experiments. Their scattering spectrum consists of resonances depending on the tip sharpness or granularity superimposed on a broad emission spectrum due to a semi-infinite metal layer acting as a nonresonant antenna. From the comparison between the plasmonic response of both types of optical antennas, a new generation of probes for tip-enhanced optical spectroscopy is proposed in which single plasmonic nanoantennas are engineered at the apex of a nonmetallic AFM tip. As from numerical simulation results, such tips would ensure a spectral tunability as a function of the material, size, and geometry, together with expected high enhancement factors. Such features would allow the design of spectrally tunable surface-enhanced Raman spectroscopy substrates and should be a reliable and efficient alternative to tips commonly used in tip-enhanced optical spectroscopy experiments such as tip-enhanced Raman spectroscopy.
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- 2019
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3. Probing plasmonic hot spots on single gold nanowires using combined near-field techniques
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Fabrice Charra, Ludovic Douillard, C. Fiorini-Debuisschert, Renaud Bachelot, Patrick Hsia, Sylvie Marguet, Sergei Kostcheev, Laboratoire d'Electronique et nanoPhotonique Organique (LEPO), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Edifices Nanométriques (LEDNA), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), ANR-13-NANO-0002,SAMIRé,Sondes Actives pour la MIcroscopie optique en champ proche à très haute Résolution(2013), and ANR-13-BS03-0009,INPACT,INvisibilité et chaleur : oPtique trAnsformationnelle pour un Contrôle des flux Thermodynamiques(2013)
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[PHYS]Physics [physics] ,Interface and colloid science ,Nanowire ,Nanotechnology ,plasmonic hot spots ,gold nanowire ,Characterization (materials science) ,Two-photon luminescence ,Photoemission electron microscopy ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,AFM ,Luminescence ,Lithography ,crystallinity ,Plasmon ,Electron-beam lithography ,PEEM/LEEM - Abstract
International audience; The plasmonic properties of individual gold nanowires (NW) have been investigated using both two-photon luminescence (2PL) coupled to atomic force microscopy (AFM) and photoemission electron microscopy (PEEM) associated to low-energy electron microscopy (LEEM) measurements. Using these complementary near-field characterization techniques, comparative studies between wires made either by colloidal chemistry (CC) or by e-beam lithography (EBL) have been undertaken towards a better understanding of the role of the wires crystallinity regarding its optical properties. Considering comparable excitation conditions, we show that wires made by colloidal synthesis exhibits quite similar field enhancement effects ("hot spots") as EBL NW, however their 2PL emission spectrum clearly reveals their crystalline properties.
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- 2015
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