Complex Flows & Non Linear Time Series Analysis

The experimental study of nonlinear and complex systems relies on the design of specific advanced data analysis tools, which need to be able to identify properties of the dynamics which are often subtle, hidden in chaotic motions, or simply by the noise. In such cases, it is necessary to use appropriate techniques that also need to be benchmarked for a quantitative reliability. These techniques, often based on advanced statistical and mathematical tools, can be then applied on suitable systems to provide important validation or input for theoretical models and numerical simulations.


Solar flares and the Sun-Earth connection. In recent years, the study of solar variability and its influence on Earth has increased, both because of a more compelling need for a good protection against solar storms that arise from the massive use of the modern technology, and for the exponential quantitative and qualitative increase of measurements available. Our approach is based on the exploitation of in-situ and remote measurements of the Sun-Earth system, including remote solar imaging, magnetic field, and energetic particles, and solar wind and magnetospheric in situ and remote measurements. The main research topics concern the dynamics of the solar active regions and their relationship with flaring activity through the analysis of the complexity of the magnetic field configuration in flaring active regions [Sorriso-Valvo et al., 2015]. Other studies concern the interpretation in terms of coupling models is also studied from data, for example through the analysis of proper modes [Vecchio et al., 2005].


Geophysical time series analysis. Several geophysical systems can be studied in the framework of complex systems and nonlinear dynamics. Examples are: earthquakes [Carbone et al., 2005], geomagnetic field reversals [Carbone et al., 2006], geomagnetic activity. These phenomena often can be observed as time series, which can be thus studied using, e.g., statistical tools. Their description is useful to validate theoretical models, to advance the general knowledge of the process, and to some extent to help improving the predictability of catastrophic events. Time series of various phenomena are studied and their statistical properties assessed.


Facilities & Lab

LiCryL @ Rende (CS)




CNR Researcher


  1. F. Pucci, F. Malara, S. Perri, G. Zimbardo, L. Sorriso-Valvo and F. Valentini, Energetic particle transport in the presence of magnetic turbulence: influence of spectral extension and intermittency, Month. Notes R. Astron. Soc. 459, 3395 (2016), DOI: 10.1093/mnras/stw877.
  2. E. Leonardis, L. Sorriso-Valvo, F. Valentini, S. Servidio, F. Carbone and P. Veltri, Multifractal scaling and intermittency in hybrid Vlasov-Maxwell simulations of plasma turbulence, Physics of Plasmas, 23, 022307 (2016), DOI: 10.1063/1.4942417.
  3. C. Rossi, F. Califano, A. Retinò, L. Sorriso-Valvo, P. Henri, S. Servidio, F. Valentini, A. Chasapis, and L. Rezeau, Two-fluid numerical simulations of turbulence inside Kelvin-Helmholtz vortices: intermittency and reconnecting current sheets, Physics of Plasmas, 22, 122303 (2015), DOI: 10.1063/1.4936795.
  4. F. Carbone, F. Ciuchi, A. Mazzulla, L. Sorriso-Valvo, Anomalous Scaling, Intermittency and Turbulence in Nematic Liquid Crystals, Molecular Crystals and Liquid Crystals, 614, 67 (2015), DOI: 10.1080/15421406.2015.1049911.
  5. G. De Vita, A. Vecchio, L. Sorriso-Valvo, C. Briand, L. Primavera, S. Servidio, F. Lepreti and V. Carbone, Cancellation analysis of current density in solar active region NOAA10019, Journal of Space Weather and Space Climate, 5, A28 (2015), DOI: 10.1051/swsc/2015029.
  6. L. Sorriso-Valvo, R. Marino, L. Lijoi, S. Perri and V. Carbone, Self-consistent Castaing distribution of solar wind turbulent fluctuations, The Astrophysical Journal, 807, 86 (2015), DOI: 10.1088/0004-637X/807/1/86.
  7. A. Chasapis, A. Retinò, F. Sahraoui, A. Vaivads, Y. Khotyaintsev, D. Sundkvist, A. Greco, L. Sorriso-Valvo, P. Canu, Thin current sheets and associated electron heating in turbulent space plasma, The Astrophysical Journal Letters 804, L1 (2015), DOI: 10.1088/2041-8205/804/1/L1.
  8. E. Yordanova, S. Perri, L. Sorriso-Valvo and V. Carbone, Multipoint observation of anisotropy and intermittency in solar-wind turbulence, EPL 110, 19001 (2015), DOI: 10.1209/0295-5075/110/19001.
  9. L. Sorriso-Valvo, G. De Vita, M. Kazachenko, S. Krucker, L. Primavera, S. Servidio, A. Vecchio, B. Welsch, G. Fisher, F. Lepreti, V. Carbone, Sign singularity and flares in solar active region NOAA 11158, The Astrophysical Journal 801, 36 (2015), DOI: 10.1088/0004-637X/801/1/36.
  10. G. De Vita, L. Sorriso-Valvo, F. Valentini, S. Servidio, L. Primavera, V. Carbone and P. Veltri, Analysis of cancellation exponents in two-dimensional Vlasov turbulence, Physics of Plasmas 21, 072315 (2014), DOI: 10.1063/1.4891339.
  11. F. Carbone and L. Sorriso-Valvo, Experimental analysis of intermittency in electrohydrodynamic instability, European Journal of Physics E 37, 61 (2014), DOI: 10.1140/epje/i2014-14061-x.
  12. C. H. K. Chen, L. Sorriso-Valvo, J. Safrankova, Z. Nemecek, Intermittency of solar wind density fluctuations from ion to electron scales, The Astrophysical Journal Letter 789, L8 (2014), DOI: 10.1088/2041-8205/789/1/L8.
  13. R. Bruno, D. Telloni, L. Primavera, E. Pietropaolo, R. D’Amicis, L. Sorriso-Valvo, V. Carbone, F. Malara and P. Veltri, Radial evolution of intermitency of density fluctuations in the fast solar wind, The Astrophysical Journal 786, 53 (2014), DOI: 10.1088/0004-637X/786/1/53.

Other Selected Publication

  1. T. Dudok de Wit, O. Alexandrova, I. Furno, L. Sorriso-Valvo, G. Zimbardo, Methods for Characterising Microphysical Processes in Plasmas, Space Science Reviews 178, 693 (2013), DOI: 10.1007/978-1-4899-7413-6_21.
  2. R. Marino, L. Sorriso-Valvo, R. D’Amicis, V. Carbone, R. Bruno, P. Veltri, On the occurrence of the third-order scaling in high latitude solar wind, The Astrophysical Journal 750, 41 (2012), DOI: 10.1088/0004-637X/750/1/41.
  3. F. Carbone, L. Sorriso-Valvo, C. Versace, G. Strangi, R. Bartolino, Anisotropy of Spatiotemporal Decorrelation in Electrohydrodynamic Turbulence, Physical Reviews Letters 106, 114502 (2011), DOI: 10.1103/PhysRevLett.106.114502.
  4. V. Carbone, R. Marino, L. Sorriso-Valvo, A. Noullez, R. Bruno, Scaling laws of turbulence and heating of fast solar wind: the role of density fluctuations, Physical Review Letters 103, 061102 (2009), DOI: 10.1103/PhysRevLett.103.061102.
  5. R. Marino, L. Sorriso-Valvo, V. Carbone, A. Noullez, R. Bruno and B. Bavassano, Heating the solar wind by a magnetohydrodynamic turbulent cascade, The Astrophysical Journal Letters 677, L71-L74 (2008), DOI: 10.1086/587957.
  6. O. Alexandrova, V. Carbone, P. Veltri, L. Sorriso-Valvo, Small-scale energy cascade of the solar wind turbulence, The Astrophysical Journal 674, 1153-1157 (2008), DOI: 10.1086/524056.
  7. L. Sorriso-Valvo, R. Marino, V. Carbone, A. Noullez, F. Lepreti, P. Veltri, R. Bruno, B. Bavassano, E. Pietropaolo, Observation of Inertial Energy Cascade in Interplanetary Space Plasma, Physical Review Letters 99, 115001-1-115001-4 (2007), DOI: 10.1103/PhysRevLett.99.115001.
  8. V. Carbone, L. Sorriso-Valvo, A. Vecchio, F. Lepreti, P. Veltri, P. Harabaglia, I. Guerra, Clustering of Polarity Reversals of the Geomagnetic Field, Physical Review Letters 96, 128501-1-128501-4 (2006), DOI: 10.1103/PhysRevLett.96.128501.
  9. V. Carbone, L. Sorriso-Valvo, E. Martines, V. Antoni, P. Veltri, Intermittency and turbulence in a magnetically confined fusion plasma, Physical Review E 62, R49-R52 (2000), DOI: 10.1103/PhysRevE.62.R49.
  10. L. Sorriso-Valvo, V. Carbone, P. Veltri, G. Consolin, R. Bruno, Intermittency in the solar wind turbulence through probability distribution functions of fluctuations, Geophysical Research Letters 26, 1801-1804 (1999), DOI: 10.1029/1999GL900270.


Turboplasmas: FP7 European Marie Curie IRSES 2010-269297, 2011-2014.

Anisotropy and intermittency in solar wind turbulence – ISSI Team, 2014-2015.

Kinetic Turbulence and Heating in the Solar Wind – ISSI Team, 2013-2014

Statistical mechanics of disordered and complex systems – PRIN2010-2011, 2013-2016

Nanoftalm: Piattaforme tecnologiche innovative per il delivery di farmaci in oftalmologia – PON MIUR, PON_0100110, 2011-2014

CNR Short Term Mobility Program 2014, visiting at Laboratoire de Physique du Plasma, Palaiseau, France, working with Dr. A. Retinò, 2014, 1 month.

CNR Short Term Mobility Program 2015,visiting at University College of London, UK, working with DR. R. WICKS (2015, 1 MONTH).

Latest News

TERAMETANANO - International Conference on Terahertz Emission, Metamaterials and Nanophotonics



Castello Carlo V, Lecce 27 -31 Maggio 2018


The IV edition of TERAMETANANO, the International Conference on Terahertz Emission, Metamaterials and Nanophotonics, will take place in Lecce (Italy) from 27 to 31 of May 2019 in the 16th-century Castle of Charles V   with two special nights that will be held in an original Theatre of Roman period.


TERAMETANANO is an annual conference that gather physicists studying a wide variety of phenomena in the areas of nano-structuresnano-photonics and meta-materials, with special attention to the coupling between light and matter and in a broad range of wavelengths, going from the visible up to the terahertz.


Al via la fase 2 del Tecnopolo per la medicina di precisione

Firmata convenzione tra Regione, Università e Cnr per avvio seconda fase del Tecnopolo

Bari, 27 novembre 2018 

Sottoscritto stamane l’accordo tra Regione PugliaCnr Consiglio nazionale delle ricerche, Irccs Giovanni Paolo II di Bari e Università di Bari per l’avvio della seconda fase del Tecnopolo per la Medicina di Precisione. Sede del tecnopolo, il CnrNanotec.

“La sfida della medicina moderna è tradurre nella pratica clinica gli enormi progressi compiuti dalla scienza e dalla tecnologia. In questo contesto le nanotecnologie, focalizzate sull’indagine e sulla manipolazione della materia a livello nanometrico-molecolare, si presentano come uno strumento potentissimo al servizio della medicina di precisione, la nuova frontiera che punta allo sviluppo di trattamenti personalizzati per il singolo paziente”, afferma  Giuseppe Gigli, direttore di Cnr Nanotec e coordinatore del Tecnopolo.

Link video dichiarazione Massimo Inguscio:

Link video di presentazione Tecnomed:

Link video dichiarazione Michele Emiliano:

Alessandro Polini, si aggiudica l'LushPrize2018

Alessandro Polini, si aggiudica l'LushPrize2018

Berlino, 16 novembre 2018 

Alessandro Polini , giovane ricercatore presso l’Istituto di Nanotecnologia del Consiglio nazionale delle ricerche (Cnr-Nanotec) di Lecce, si è aggiudicato il Lush Prize 2018 categoria 'Giovani ricercatori', il premio che incoraggia le idee che promuovono la sperimentazione non animale.

Il giovane salentino ha visto così gratificare il suo studio basato sull’utilizzo di modelli 'organ-on-a-chip' altamente sofisticati per capire i meccanismi patologici alla base della Sclerosi Laterale Amiotrofica (SLA). Formatosi nel campo delle biotecnologie mediche, bioingegneria e nanotecnologie, anche con importanti esperienze internazionali -dal Lawrence Berkeley National Laboratory in California all'Harvard Medical School in Massachusetts per approdare poi alla Radboud University in Olanda- Alessandro Polini è rientrato in Italia per proseguire gli studi relativi ai sistemi 'organ-on-a-chip' grazie alla piattaforma tecnologica TecnoMED, il 'Tecnopolo di nanotecnologia e fotonica per la medicina di precisione' nato presso il Cnr-Nanotec di Lecce da un progetto finanziato da Regione Puglia, Cnr e Miur...

Comunicato Stampa CNR Intervista ad Alessandro Polini, vincitore del Lush Prize 2018 con il progetto ‘organ-on-a-chip’