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Your search keyword '"Istituto Nanoscienze [Lecce] (NNL)"' showing total 5 results
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5 results on '"Istituto Nanoscienze [Lecce] (NNL)"'

1. Comment on 'Linear wave dynamics explains observations attributed to dark-solitons in a polariton quantum fluid'

Author

Iacopo Carusotto, Dmitry Solnyshkov, Gabriele Grosso, Elisabeth Giacobino, Simon Pigeon, Alberto Bramati, Alberto Amo, Guillaume Malpuech, Jacqueline Bloch, Daniele Sanvitto, Cristiano Ciuti, Nicolas Pavloff, A. M. Kamchatnov, Benoit Deveaud, Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB (Jussieu)), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), INO-CNR BEC Center and Dipartimento di Fisica, Università degli Studi di Trento (UNITN), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Massachusetts Institute of Technology (MIT), Institute of Spectroscopy, Russian Academy of Sciences [Moscow] (RAS), Institut Pascal (IP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Queen's University [Belfast] (QUB), Istituto Nanoscienze [Lecce] (NNL), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Consiglio Nazionale delle Ricerche (CNR), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Sigma CLERMONT (Sigma CLERMONT)-Centre National de la Recherche Scientifique (CNRS), and Istituto Nanoscienze [Lecce (NNL)

Subjects
Physics, Quantum fluid, [PHYS]Physics [physics], Scattering, Nucleation, FOS: Physical sciences, General Physics and Astronomy, Critical ionization velocity, Nonlinear system, Quantum Gases (cond-mat.quant-gas), Quantum mechanics, Polariton, Soliton, Condensed Matter - Quantum Gases, Excitation, Optics (physics.optics), Physics - Optics
Abstract

In a recent preprint (arXiv:1401.1128v1) Cilibrizzi and co-workers report experiments and simulations showing the scattering of polaritons against a localised obstacle in a semiconductor microcavity. The authors observe in the linear excitation regime the formation of density and phase patterns reminiscent of those expected in the non-linear regime from the nucleation of dark solitons. Based on this observation, they conclude that previous theoretical and experimental reports on dark solitons in a polariton system should be revised. Here we comment why the results from Cilibrizzi et al. take place in a very different regime than previous investigations on dark soliton nucleation and do not reproduce all the signatures of its rich nonlinear phenomenology. First of all, Cilibrizzi et al. consider a particular type of radial excitation that strongly determines the observed patterns, while in previous reports the excitation has a plane-wave profile. Most importantly, the nonlinear relation between phase jump, soliton width and fluid velocity, and the existence of a critical velocity with the time-dependent formation of vortex-antivortex pairs are absent in the linear regime. In previous reports about dark soliton and half-dark soliton nucleation in a polariton fluid, the distinctive dark soliton physics is supported both by theory (analytical and numerical) and experiments (both continuous wave and pulsed excitation)., 4 pages, 2 figures

Published
2015

2. Analogue chromodynamics with photons in a perovskite microcavity

Author

Fieramosca, A., Polimeno, L., Lerario, G., De Marco, L., De Giorgi, M., Ballarini, D., Dominici, L., Ardizzone, V., Pugliese, M., Prontera, C., Maiorano, V., Gigli, G., Leblanc, Charly, Malpuech, Guillaume, Solnyshkov, Dmitry, Sanvitto, D., NATIONAL NANOTECHNOLOGY LABORATORY (NNL), ITALIAN INSTITUTE OF TECHNOLOGY (IIT)-SCUOLA SUPERIORE ISUFI-CNR-NANO, Italian Institute of Technology (IIT), Dipartimento di Energetica, Universita di Roma - La Sapienza, Université de Rome, Department of Clinical Pathophysiology, Università degli studi di Torino = University of Turin (UNITO), CNR, Ist Nanotecnol, I-73100 Lecce, Italy, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Istituto Nanoscienze [Lecce] (NNL), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), University of Turin, and Consiglio Nazionale delle Ricerche (CNR)

Subjects
[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

3. Vibrational Energy Harvesting

Author

Ronan Hinchet, Alessandro Bertacchini, Dhiman Mallick, Francesco Guido, Teresa Todaro, Saibal Roy, Gustavo Ardila, Massimo De Vittorio, Julien Keraudy, Pranay Podder, Luca Larcher, Dipartimento di Scienze e Metodi dell'Ingegneria [Reggio Emilia] (DISMI), Università degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia (UNIMORE), Tyndall National Institute [Cork], Istituto Nanoscienze [Lecce] (NNL), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation (IMEP-LAHC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), F. Balestra, European Project: 257375,ICT,FP7-ICT-2009-5,NANOFUNCTION(2010), Università degli Studi di Modena e Reggio Emilia (UNIMORE), Consiglio Nazionale delle Ricerche (CNR), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), and Université de Nantes (UN)-Université de Nantes (UN)

Subjects
010302 applied physics, Microelectromechanical systems, energy harvesting, Computer science, Mechanical engineering, 02 engineering and technology, Transduction (psychology), 021001 nanoscience & nanotechnology, 01 natural sciences, 7. Clean energy, Piezoelectricity, Computer Science::Other, Vibration, Modeling and simulation, MEMS, Transducer, 0103 physical sciences, energy harvesting, MEMS, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 0210 nano-technology, Energy harvesting, Energy (signal processing)
Abstract

chap 6; International audience; Vibration‐powered generators are typically inertial spring and mass systems which employ three main transduction mechanisms to extract energy from vibrations: piezoelectric, electromagnetic and electrostatic. This chapter presents a short overview of the microelectromechanical systems (MEMS) energy harvesters employing both piezoelectric and electromagnetic effects both proposed in the literature and developed in the framework of the Nanofunction project. It presents a short overview of state‐of‐the‐art vibration energy transducers employing the piezoelectric effect. The chapter illustrates the near‐field characterization techniques as well as electromechanical modeling and simulation required for the design of the energy harvesting transducers. It reviews the electromagnetic generators presented in the literature including large‐scale discrete devices and integrated versions, where the results achieved on vibration energy harvester exploiting both electromagnetic and piezoelectric effects are derived. Modeling and simulation results are presented to demonstrate the feasibility of the proposed device concepts.

Published
2014

4. Charge transport in poly(3-hexylthiophene):CdSe nanocrystals hybrid thin films investigated with time-of-flight measurements

Author

Elsa Couderc, Jérôme Faure-Vincent, Nicolas Bruyant, Angela Fiore, Frédéric Chandezon, Peter Reiss, David Djurado, University of Southern California (USC), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Istituto Nanoscienze [Lecce] (NNL), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Structures et propriétés d'architectures moléculaire (SPRAM - UMR 5819), Institut Nanosciences et Cryogénie (INAC), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Electron mobility, Materials science, Physics and Astronomy (miscellaneous), Analytical chemistry, Nanotechnology, Electron, chemistry.chemical_compound, Time of flight, chemistry, Nanocrystal, Oleylamine, Electric field, [CHIM]Chemical Sciences, Charge carrier, Thin film
Abstract

Charge carrier mobilities and transport dispersivity are studied in hybrid films composed of poly(3-hexylthiophene) and CdSe nanocrystals by the time-of-flight method, using a field range of 105–106 V/cm. It is found that charge transport parameters pass through an optimum for 75 wt. % (36 vol. %) of nanocrystals in the polymer matrix, yielding balanced hole and electron mobilities around 10−3 cm2/V s. Changing the nanocrystal shape from spherical to branched increases the intersite coupling disorder in the hybrid whereas changing the surface ligands from stearate/oleylamine to pyridine decreases it. Both these modifications have an impact on the electric field dependence of the measured mobilities.

Published
2012

5. All-optical polariton transistor

Author

Dario Ballarini, Giuseppe Gigli, Emiliano Cancellieri, Daniele Sanvitto, Romuald Houdré, Roberto Cingolani, M. De Giorgi, Alberto Bramati, Elisabeth Giacobino, Italian Institute of Technology (IIT), Istituto Nanoscienze [Lecce] (NNL), Consiglio Nazionale delle Ricerche (CNR), Universidad Autonoma de Madrid (UAM), Laboratoire Kastler Brossel (LKB (Jussieu)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Università del Salento [Lecce], National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Universidad Autónoma de Madrid (UAM), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Ballarini, D., De Giorgi, M., Cancellieri, E., Houdre, R., Giacobino, E., Cingolani, Roberto, Bramati, A., Gigli, Giuseppe, and Sanvitto, D.

Subjects
Photon, OR gate, Computer science, Optical engineering, SEMICONDUCTOR MICROCAVITIES, General Physics and Astronomy, FOS: Physical sciences, Physics::Optics, Context (language use), Integrated circuit, 02 engineering and technology, Exciton-polaritons, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, law.invention, 010309 optics, BISTABILITY, law, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 0103 physical sciences, Polariton, Electronic engineering, BOSE-EINSTEIN CONDENSATION, 010306 general physics, Physics, Condensed Matter::Quantum Gases, Multidisciplinary, Condensed Matter - Mesoscale and Nanoscale Physics, Plane (geometry), business.industry, Condensed Matter::Other, Transistor, General Chemistry, 021001 nanoscience & nanotechnology, Chip, [SPI.TRON]Engineering Sciences [physics]/Electronics, Transmission (telecommunications), Quantum Gases (cond-mat.quant-gas), Logic gate, Optoelectronics, business, Condensed Matter - Quantum Gases, 0210 nano-technology, STIMULATED SCATTERING, AMPLIFIER, Physics - Optics, Optics (physics.optics)
Abstract

International audience; Although optical technology provides the best solution for the transmission of information, all-optical devices must satisfy several qualitative criteria to be used as logic elements. In particular, cascadability is difficult to obtain in optical systems, and it is assured only if the output of one stage is in the correct form to drive the input of the next stage. Exciton-polaritons, which are composite particles resulting from the strong coupling between excitons and photons, have recently demonstrated huge non-linearities and unique propagation properties. Here we show that polariton fluids moving in the plane of the microcavity can operate as input and output of an all-optical transistor, obtaining up to 19 times amplification and demonstrating the cascadability of the system. Moreover, the operation as an AND/OR gate is shown, validating the connectivity of multiple transistors in the microcavity plane and opening the way to the implementation of polariton integrated circuits.

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