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PHOTONIC NANOSTRUCTURES WITH CONTROLLABLE AND MULTIFUNCTIONAL PROPERTIES

PHOTONIC NANOSTRUCTURES WITH CONTROLLABLE AND MULTIFUNCTIONAL PROPERTIES. Simion Astilean Babes-Bolyai University Faculty of Physics Molecular Spectroscopy Group Cluj-Napoca. Artificial nanostructures meet biomolecules. Current challenge of nanofabrication.

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PHOTONIC NANOSTRUCTURES WITH CONTROLLABLE AND MULTIFUNCTIONAL PROPERTIES

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  1. PHOTONIC NANOSTRUCTURES WITH CONTROLLABLE AND MULTIFUNCTIONAL PROPERTIES Simion Astilean Babes-Bolyai University Faculty of Physics Molecular Spectroscopy Group Cluj-Napoca

  2. Artificial nanostructures meet biomolecules Current challenge of nanofabrication To control: thesize, shape, composition, spatial organization and chemical (biological) function of nanostructures

  3. Main points of our research • Developing an experimentally inexpensive method of controlled nanofabrication: The method is based on self-assembling process and nanosphere lithography and is able to fabricate large-area of highly ordered and shape-size-controlled nanostructures. • Fabrication ofmultifunctional photonic nanostructures: Periodic arrays of noble-metal nanoparticles, Periodic arrays of nanoholes in metallic films, Photonic crystals, Self-assemblies of functionalized polymer nanospheres, Etc. • Using light (photons) to extract and process information on the nanoscale: Optical bio-chemo-sensing, Ultrasensitive spectroscopic analysis, Photonics application, Etc.

  4. Work on progress

  5. SEM pictures of self-assembled monolayer of polystyrene nanospheres Starting with self-assembly of polystyrene nanospheres

  6. AFM and SEM pictures of self-assembled multi-layers of polystyrene nanospheres

  7. Using self-assemblies of polystyrene nanospheres as templates for nanolithography 1. Regular Arrays of Noble-Metal Nanoparticles 2. Regular Nanoscale Hole-Arrays in Noble-Metal Films

  8. Applications

  9. Plasmon Light Light Biomolecule FG Linker Plasmon 100 nm Metal Nanostructures for optical chemo-bio-sensing applications Nanosized optical biosensors based on surface plasmons resonances (SPR)

  10. Surface Plasmon Resonances

  11. Controlling the propagation, emission and detection of light on the nanoscale Nanostructures for photonic applications

  12. SERS Results

  13. Fluorescence Decay Control

  14. Interdisciplinary approach

  15. Required techniques for fabrication, processing and characterization of nanostructures * Our laboratoryfacilities

  16. National 1. Centrul de Biologie Moleculara (Institutul de Cercetari Experimentale interdisciplinare al Univ Babes-Bolyai, Cluj-Napoca) 2. Laboratorul de Materiale Nanostructurate Avansate (INCDTIM, Cluj-Napoca) 3. Catedra de Macromolecule (Univ Tehnica Gh Asachi, Iasi) 4. Institutul National de Chimie Macromoleculara P. Poni (Iasi) 5. Centrul de Fizica Plasmei, (Facultatea de Fizica, Univ. Al I Cuza, Iasi) International 1.Prof Sigrid Avrillier, Lasers Physics Laboratories, Paris University and SOPRA, France 2.Prof Gerard Bidan, Laboratoire d’Electrochimie Moleculaire et Structures des Interfaces, DRFMC, CEA, Grenoble, France. 3.Dr Anne Corval and Dr Patrice Baldeck, Laboratoire de Spectrometrie Physique, Univ Joseph Fourier Grenoble France 4.Prof Arnulf Materny, School of Engineering and Science, International University Bremen, Germany 5.Prof WL Barnes, School of Physics, University of Exeter, UK 6.Dr Gilad Haran, Single Molecule Laboratory,Weizmann Institute, Rehovot, Israel 7.Dr Victor Weiss, Optronic Center, ELOP Electrooptics Industries Ltd, Rehovot, Israel 8.Dr Peter Persephonis, University of Patras, Patras, Greece We are looking for partners… Groups already contacted and interested in this research

  17. Conclusions and Perspectives • This project develops an experimentally simple technique for controlling the fabrication of nanostructures. • The fabricated nanostructures have a real potential for relevant biosensing, photonics and ultrasensitive spectroscopic applications. • This method of nanofabrication could be extended to semiconductors, polymer, ceramics and magnetic materials.

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