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Title: Nano-Gap Arrays Fabricated on Large Areas as Plasmonic Platforms for Controlling Light Emission Processes
Code: PN-II-RU-TE-2014-4-2639
Value: 544371 Lei
Duration: 01.10.2015 - 30.09.2017
Acknowledgement: This work was supported by a grant of the Romanian National Authority for Scientifc Research, CNCS –UEFISCDI.
Members: Dr. Cosmin Farcau (Project Director), Dr. Ioan Botiz, Dr. Sanda Boca, Cristian Tira, Diana Zaharie-Butucel.
Summary: This project, Nano-Gap Arrays Fabricated on Large Areas as Plasmonic Platforms for Controlling Light Emission Processes (acronym GLANCE), proposes to develop some reliable procedures for fabricating large area noble metal nanostructures that exhibit a high density of uniform nano-gaps, the thorough investigation of their optical / plasmonic properties, and advanced studies of photoluminescence of quantum dots placed at the nano-gaps. The final aim is achieving control over the spontaneous emission through surface plasmon engineering. The expected results of this project can generate both new knowledge at fundamental level, relevant for Plasmonics and NanoPhotonics, and experimental procedures with an important potential application in new light emitting devices, future photonic integrated circuits or optical (bio)sensors. The project will also contribute to the personal development of its young members, who will be involved in tackling hot topics, in a competitive and productive scientific environment.
Main results:
colloidal arrays fabricated by convective self-assembly;
colloidal arrays fabricated by liquid-air interface assembly on large areas;
morphology of colloidal arrays modified by RIE;
plasmonic nanostructures fabricated based on atched assembled colloidal arrays;
correlations between morphology and optical/plasmonic response demonstrated
FDTD simulations of the optical response
FDTD simulations of the emission enhancement;
Modulated QD emission by fabricated plasmonic nanostructures.
Publications:
1. Contribution to a book chapter: M. Potara, C. Farcau, I. Botiz, S. Astilean, Detection of Environmental Pollutants by Surface-Enhanced Raman Spectroscopy, chapter in Advanced Environmental Analysis: Applications of Nanomaterials, (Eds. C. M. Hussain and B. Kharisov), 2017 Royal Society of Chemistry.
2. WoS article: D. Zaharie-Butucel, L. Digianantonio, C. Leordean, L. Ressier, S. Astilean, C. Farcau, Flexible transparent sensors from reduced graphene oxide micro-stripes fabricated by convective self-assembly, Carbon 2016, 113, 361.
3. WoS article: C. Tira, I. Ly, R. Vallee, S. Astilean, C. Farcau, Shaping light spectra and field profiles in metal-coated monolayers of etched microspheres, Optical Materials Express 2017, 7, 2847.
4. Conference presentation: Nano-gap arrays in hybrid colloidal plasmonic-photonic crystals, SPIE Paper Number 9921-96, SPIE International Symposium on Nanoscience + Engineering, part of the SPIE Optics and Photonics 2016, 28 August – 1 September 2016, San Diego, California, USA.
5. Conference presentation: Convective self-assembly of chemically converted graphene: a route towards flexible transparent electronic devices, NANOSMAT-11 International Conference on Surfaces, Coatings and Nanostructured Materials.
6. Conference presentation: Sculpting the light fields in hybrid colloidal photonic-plasmonic crystals by plasma etching, Poster Number 082, 7th International Colloids Conference, 18 – 21 June 2017, Sitges, Spain.
7. Conference presentation: Tuning the optical response of hybrid colloidal plasmonic-photonic crystals via colloidal etching, Nanotech France 2017, 28-30 June 2017, Paris, France.
8. Conference presentation: Plasmon-enhanced spectroscopies on nanostructured films obtained by colloidal self-assembly, EMN Meeting on Photonics, 04-08 September 2017, Budapest, Hungary.
9. Conference presentation: Fluorescence lifetime imaging on hybrid colloidal plasmonic-photonic crystals, EMN Meeting on Photonics, 04-08 September 2017, Budapest, Hungary.
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