Search or filter publications

Filter by type:

Filter by publication type

Filter by year:

to

Results

  • Showing results for:
  • Reset all filters

Search results

  • Journal article
    Sun Z, Hasan T, Torrisi F, Popa D, Privitera G, Wang F, Bonaccorso F, Basko DM, Ferrari ACet al., 2010,

    Graphene mode-locked ultrafast laser.

    , ACS Nano, Vol: 4, Pages: 803-810, ISSN: 1936-086X

    Graphene is at the center of a significant research effort. Near-ballistic transport at room temperature and high mobility make it a potential material for nanoelectronics. Its electronic and mechanical properties are also ideal for micro- and nanomechanical systems, thin-film transistors, and transparent and conductive composites and electrodes. Here we exploit the optoelectronic properties of graphene to realize an ultrafast laser. A graphene-polymer composite is fabricated using wet-chemistry techniques. Pauli blocking following intense illumination results in saturable absorption, independent of wavelength. This is used to passively mode-lock an erbium-doped fiber laser working at 1559 nm, with a 5.24 nm spectral bandwidth and approximately 460 fs pulse duration, paving the way to graphene-based photonics.
  • Conference paper
    Popa D, Sun Z, Torrisi F, Hasan T, Wang F, Ferrari ACet al., 2010,

    Generation of 63-nJ pulses from a fiber oscillator mode-locked by nanotubes
  • Conference paper
    Sun Z, Hasan T, Popa D, Torrisi F, Wang F, Bonaccorso F, Ferrari ACet al., 2010,

    Ultrafast Fiber Laser Mode-locked by Graphene Based Saturable Absorber
  • Conference paper
    Wang F, Popa D, Sun Z, Hasan T, Torrisi F, Ferrari ACet al., 2010,

    Characterization of Dynamic Nonlinear Absorption of Carbon Nanotube Saturable Absorber
  • Journal article
    La Fata P, Torrisi F, Lombardo S, Nicotra G, Puglisi R, Rimini Eet al., 2009,

    Amorphous to fcc-polycrystal transition in Ge2Sb2Te5 thin films studied by electrical measurements: Data analysis and comparison with direct microscopy observations

    , JOURNAL OF APPLIED PHYSICS, Vol: 105, ISSN: 0021-8979
  • Journal article
    La Fata P, Puglisi R, Lombardo S, Bongiorno Cet al., 2008,

    Nano-patterning with Block Copolymers

    , SUPERLATTICES AND MICROSTRUCTURES, Vol: 44, Pages: 693-698, ISSN: 0749-6036
  • Journal article
    Geyer T, Torrisi FD, Morari M, 2008,

    Optimal complexity reduction of polyhedral piecewise affine systems

    , AUTOMATICA, Vol: 44, Pages: 1728-1740, ISSN: 0005-1098
  • Journal article
    Sciacca E, Lombardo S, Mazzillo M, Condorelli G, Sanfilippo D, Contissa A, Belluso M, Torrisi F, Billotta S, Campisi Aet al., 2006,

    Arrays of geiger mode avalanche photodiodes

    , IEEE Photonics Technology Letters, Vol: 18, Pages: 1633-1635, ISSN: 1041-1135

    Following our previous work which has led us to fabricate single pixels of geiger mode avalanche photodiodes (GMAPs), we present in this letter the results regarding the fabrication and characterization of a bidimensional array of GMAPs. Low dark count rates and very good uniformity over the sensor are reported. High quantum efficiency in the visible range has been measured. Measurements indicate that not all the nominal active area is effectively sensitive. We have some preliminary evidence that no crosstalk effects are present in our device. Notwithstanding this, in view of a near future shrinking of all dead regions, an optical trench process has been developed and is illustrated here. Possible future trends are highlighted. © 2006 IEEE.
  • Journal article
    Potocnik B, Bemporad A, Torrisi FD, Music G, Zupancic Bet al., 2004,

    Hybrid modelling and optimal control of a Multiproduct Batch Plant

    , CONTROL ENGINEERING PRACTICE, Vol: 12, Pages: 1127-1137, ISSN: 0967-0661
  • Journal article
    Grieder P, Borrelli F, Torrisi F, Morari Met al., 2004,

    Computcation of the constrained infinite time linear quadratic regulator

    , AUTOMATICA, Vol: 40, Pages: 701-708, ISSN: 0005-1098
  • Journal article
    Torrisi FD, Bemporad A, 2004,

    HYSDEL - A tool for generating computational hybrid models for analysis and synthesis problems

    , IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol: 12, Pages: 235-249, ISSN: 1063-6536
  • Journal article
    Bemporad A, Filippi C, Torrisi FD, 2004,

    Inner and outer approximations of polytopes using boxes

    , COMPUTATIONAL GEOMETRY-THEORY AND APPLICATIONS, Vol: 27, Pages: 151-178, ISSN: 0925-7721
  • Conference paper
    Geyer T, Torrisi FD, Morari M, 2004,

    Optimal complexity reduction of piecewise affine models based on hyperplane arrangements

    , American Control Conference, Publisher: IEEE, Pages: 1190-1195, ISSN: 0743-1619
  • Conference paper
    Liscidini A, Brandolini M, Rossi P, Torrisi F, Svelto Fet al., 2004,

    Design methodology of feedback-LNAs for GHz applications

    , BIPOLAR/BiCMOS Circuits and Technology Meeting, Publisher: IEEE, Pages: 253-256, ISSN: 1088-9299
  • Conference paper
    Bonfanti A, Levantino S, Pellerano S, Samori C, Lacaita AL, Torrisi Fet al., 2003,

    A voltage-controlled oscillator for IEEE 802.11a and HiperLAN2 application

    , 29th European Solid-State Circuits Conference, Publisher: IEEE, Pages: 695-698
  • Conference paper
    Grieder P, Borrelli F, Torrisi F, Morari Met al., 2003,

    Computation of the constrained infinite time linear quadratic regulator

    , Annual American Control Conference (ACC 2003), Publisher: IEEE, Pages: 4711-4716, ISSN: 0743-1619
  • Conference paper
    Geyer T, Torrisi FD, Morari M, 2003,

    Efficient mode enumeration of compositional hybrid systems

    , 6th International Workshop on Hybrid Systems - Computation and Control (HSCC 2003), Publisher: SPRINGER-VERLAG BERLIN, Pages: 216-232, ISSN: 0302-9743
  • Journal article
    Cosentino S, Filoramo P, Granata A, Marletta M, Martino G, Pelleriti R, Torrisi F, Paparo M, Cosentino G, Vita P, Palmisano Get al., 2002,

    An integrated RF transceiver for DECT application

    , IEEE JOURNAL OF SOLID-STATE CIRCUITS, Vol: 37, Pages: 443-449, ISSN: 0018-9200
  • Journal article
    Bemporad A, Fukuda K, Torrisi FD, 2001,

    Convexity recognition of the union of polyhedra

    , COMPUTATIONAL GEOMETRY-THEORY AND APPLICATIONS, Vol: 18, Pages: 141-154, ISSN: 0925-7721
  • Conference paper
    Torrisi FD, Bemporad A, 2001,

    Discrete-time hybrid modeling and verification

    , 40th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 2899-2904, ISSN: 0743-1546

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://www.imperial.ac.uk:80/respub/WEB-INF/jsp/search-t4-html.jsp Request URI: /respub/WEB-INF/jsp/search-t4-html.jsp Query String: id=1260&limit=20&resgrpMemberPubs=true&resgrpMemberPubs=true&page=6&respub-action=search.html Current Millis: 1728214749719 Current Time: Sun Oct 06 12:39:09 BST 2024

Contact

Dr Felice Torrisi
Senior Lecturer in Chemistry of Two-Dimensional Materials

401A
Molecular Sciences Research Hub
White City Campus

f.torrisi@imperial.ac.uk
+44 (0)20 7594 5818