Armando Piccardi

Room n°32
Department of Engineering
University of Rome "Roma Tre"
Via della Vasca Navale, 84 - 00146 - Roma - Italy
tel. +39 06 5733 7045
e-mail: apiccardi@uniroma3.it



Curriculum Vitae



Armando Piccardi (b. in Sora on 11/07/1976) received in July 2003 an MSc degree in Electronic Engineering ("Laurea") from the University of L'Aquila, with a thesis entitled "Generation of bidimensional spatial solitons in photorefractive crystals". In 2004 he completed an international Master of Science in Nanotechnologies from the University Ca' Foscari in Venice and University of Padua and enrolled for an internship at the Fraunhofer Institute for Materials and Laser Techniques in Dresden (Germany), working on XRR thin film characterization. In 2010 he completed his PhD at the University "Roma Tre" defending a dissertation on "Optical spatial solitons for all-optical signal processing".




Publications

2017

All-optical guided-wave random laser in nematic liquid crystals
Optics Express Vol. 25, Issue 5, pp. 4672-4679 (2017)

Nematicon-enhanced spontaneous symmetry breaking
Mol. Cryst. Liq. Cryst., in press

Erratum: \"Soliton-assisted random lasing in optically-pumped liquid crystals
Appl. Phys. Lett. 110 (1), 1019902 (2017)

Bistable beam propagation in liquid crystals
IEEE Journal of Quantum Electronics Volume: 53, Issue: 1,

2016

Nonlocal soliton scattering in random potentials
Journal of Optics, Volume 18, Number 7

Soliton-assisted random lasing in optically-pumped liquid crystals
Appl. Phys. Lett. 109, 161105 (2016)

Voltage-driven beam bistability in a reorientational uniaxial dielectric
APL Photonics 1, 011302 (2016)

2015

Nonlinear competition in nematicon propagation
Optics Letters Vol. 40, Issue 22, pp. 5235-5238 (2015)

Soliton enhancement of sponaneous symmetry breaking
Optica 2 (9), 783-9 (2015)

Observation of beam self-induced transition from positive to negative optical refraction in nematic liquid crystals
Mol. Cryst. Liq. Cryst. 619 (1), 28-34 (2015)

2014

Nematicons in planar cells subject to the optical Freedericksz threshold
Opt. Express 22 (25), 30663-30668 (2014)

Power-controlled transition from standard to negative refraction in reorientational soft matter
Nat. Commun. 5:5533 doi: 10.1038/ ncomms6533 (2014)

Beam hysteresis via reorientational self-focusing
Opt. Lett. 39, 5830-5833 (2014)

Bistability with Optical Beams Propagating in a Reorientational Medium
Phys. Rev. Lett. 113, 023901 (2014)

2013

Nematicons and their electro-optic control: light localization and signal readdressing via reorientation in liquid crystals
Int. J. Mol. Sci. 14 (10), 19932-19950 (2013)

Properties of nematicons in low-birefringent nematic liquid crystals
Phot. Lett. Pol. 4 (1), 2-4 (2013)

Frequency-Controlled Routing of Self-Confined Beams in Nematic Liquid Crystals
Mol. Cryst. Liq. Cryst. 572 (1), 26-33 (2013)

Interactions of accessible solitons with interfaces in anisotropic media: the case of uniaxial nematic liquid crystals
New J. Phys. 15, 043011 (2013)

2012

Power-Dependent Nematicon Self-Routing
Nematicons, Ed. G. Assanto, Wiley, ISBN: 978-0-470-90724-5 (2012)

Nematicons in Light Valves
Nematicons, Ed. G. Assanto, Wiley, ISBN: 978-0-470-90724-5 (2012)

External Control of Nematicon Paths
Nematicons, Ed. G. Assanto, Wiley, ISBN: 978-0-470-90724-5 (2012)

Nematicons: Spatial Optical Solitons in Nematic Liquid Crystals
Nematicons, Ed. G. Assanto, Wiley, ISBN: 978-0-470-90724-5 (2012)

Frequency-controlled acceleration of spatial solitons in nematic liquid crystals
Appl. Phys. Lett. 101, 081112 (2012)

Nematicon waveguides: self-confined beams and their electric control
Appl. Phys. B 108, 177-182 (2012)

In-plane steering of nematicon waveguides across an electrically tuned interface
Appl. Phys. Lett. 100, 251107 (2012)

Dark Spatial Solitons in Liquid Crystals
Mol. Cryst. Liq. Cryst. 558, 168-175 (2012)

Tunable nonlinearity in nematicon physics
Mol. Cryst. Liq. Cryst. 558, 2-11 (2012)

Electro-optic steering of nematicons
Phot. Lett. Pol. 4 (1), 2-4 (2012)

2011

Nematicon self-steering
Mol. Cryst. Liq. Cryst. 549, 1-9 (2011)

Transverse self-accelaration of nematicons: can a self-confined beam change its own path?
J. Nonl. Opt. Phys. Mat. 20, 237-247 (2011)

Trends and trade-offs in nematicon propagation
Appl. Phys. B 104 (4), 805-11 (2011)

Nematicon-nematicon interactions in a medium with tunable nonlinearity and fixed nonlocality
Opt. Lett. 36 (13), 2566-8 (2011)

Dark Nematicons
Opt. Lett. 36 (8), 1456-8 (2011)

2010

Power-dependent nematicon steering via walk-off
J. Opt. Soc. Am. B 27 (11), 2398-404 (2010)

Nematicons in Liquid Crystal Light Valves
Mol. Cryst. Liq. Cryst. 527, 98-108 (2010)

Propagation of spatial optical solitons in a dielectric with adjustable nonlinearity
Phys. Rev. A 82, 023806 (2010)

Sub-milliwatt dissipative nematicons and spontaneous light emission in dye-doped nematic liquid crystals
Electron. Lett. 46, 790 (2010)

Self-turning self-confined light beams in guest-host media
Phys. Rev. Lett. 104, 213904 (2010)

Readdressable interconnects with spatial soliton waveguides in liquid crystal light valves
IEEE Photon. Technol. Lett. 22, 694 (2010)

Soliton gating and switching in liquid crystal light valve
Appl. Phys. Lett. 96, 071104 (2010)

Soliton self-deflection via power-dependent walk-off
Appl. Phys. Lett. 96, 061105 (2010)

Nematicon All-optical control in liquid crystal light valves
Opt. Lett 35 (3), 390-2 (2010)

2009

Liquid Crystal Light Valves: a versatile platform for Nematicons
Photon. Lett. Pol. 1 (4), 151-153 (2009)

Voltage-driven in-plane steering of nematicons
Appl. Phys. Lett. 94, 091106 (2009)

Spatial solitons in liquid crystal light valves
Opt. Lett. 34 (6), 737-739 (2009)

2008

All-optical steering of soliton waveguides in dye doped liquid crystals
Appl. Phys. Lett. 93, 171104 (2008)

Guiding and Bending Light at Will with Spatial Solitons in Liquid Crystals
Int. J. Microw. Opt. Techn. 3 (3), 370-6 (2008)

2007

Nonlinear management of the angular momentum of soliton clusters: Theory and experiment
Phys. Rev. A 75, 063835 (2007)

Nonlinearly controlled angular momentum of soliton clusters
Opt. Lett. 32, 1447-1449 (2007)