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Federico Matteini

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Related publications (35)

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Quantum dots in the GaAs/AlxGa1-xAs core-shell nanowires: Statistical occurrence as a function of the shell thickness

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini, Sonia Conesa Boj, Luca Francaviglia, Yannik Fontana

Quantum dots (QDs) embedded in nanowires represent one of the most promising technologies for applications in quantum photonics. Self-assembled bottom-up fabrication is attractive to overcome the technological challenges involved in a top-down approach, bu ...

American Institute of Physics2015

Increased Photoconductivity Lifetimes in GaAs Nanowires via n-Type and p-Type Shell Doping

Anna Fontcuberta i Morral, Federico Matteini, Francesca Amaduzzi

Reliable doping in GaAs nanowires is essential for the development of novel optoelectronic devices. Previously, GaAs nanowires have been shown to exhibit extremely short photoconductivity lifetimes of a few picoseconds due to their high surface recombinati ...

Ieee2016

Novel illumination strategy for lidar enabled by update in the laser product standards

Federico Matteini, Lucio Carrara

In this article, the authors propose a novel illumination strategy for light detection and ranging (lidar) systems emitting in the retinal hazard region (400 m

AMER INST PHYSICS2018

Tailoring the diameter and density of self-catalyzed GaAs nanowires on silicon

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini, Yannik Fontana

Nanowire diameter has a dramatic effect on the absorption cross-section in the optical domain. The maximum absorption is reached for ideal nanowire morphology within a solar cell device. As a consequence, understanding how to tailor the nanowire diameter a ...

Institute of Physics2015

Time-Resolved Nonlinear Coupling between Orthogonal Flexural Modes of a Pristine GaAs Nanowire

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini

We demonstrate nonlinear coupling between two orthogonal flexural modes of single as-grown GaAs nanowires. The resonant frequency of one mode can be shifted over many line widths by mechanically driving the other mode. We present time-domain measurements o ...

American Chemical Society2016

Magnetization reversal of an individual exchange-biased permalloy nanotube

Anna Fontcuberta i Morral, Dirk Grundler, Gözde Tütüncüoglu, Federico Matteini

We investigate the magnetization reversal mechanism in an individual permalloy (Py) nanotube (NT) using a hybrid magnetometer consisting of a nanometer-scale SQUID (nanoSQUID) and a cantilever torque sensor. The Py NT is affixed to the tip of a Si cantilev ...

American Physical Society2015

Towards defect-free 1-D GaAs/AlGaAs heterostructures based on GaAs nanomembranes

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini, Heidi Andrea Potts, Davide Deiana

We demonstrate the growth of defect-free zinc-blende GaAs nanomembranes by molecular beam epitaxy. Our growth studies indicate a strong impact of As-4 re-emission and shadowing in the growth rate of the structures. The highest aspect ratio structures are o ...

Royal Soc Chemistry2015

Understanding and exploiting optical properties in semiconductor nanowires for solar energy conversion

Eleonora Frau, Anna Fontcuberta i Morral, Federico Matteini, Esther Alarcon Llado, Heidi Andrea Potts

Semiconductor nanowires are promising building blocks for next generation solar energy conversion at low cost, due to their large absorption cross-sections. Here, the understanding of their absorption power is explored via computational and experimental me ...

IEEE2016

Probing inhomogeneous composition in core/shell nanowires by Raman spectroscopy

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Martin Heiss, Federico Matteini, Eleonora Russo, Sonia Conesa Boj, Esther Alarcon Llado, Francesca Amaduzzi

Due to its non-destructive and its micro-spatial resolution, Raman spectroscopy is a powerful tool for a rapid structural and compositional characterization of nanoscale materials. Here, by combining the compositional dependence of the Raman peaks with the ...

American Institute of Physics2014

Anisotropic magnetoresistance of individual CoFeB and Ni nanotubes with values of up to 1.4% at room temperature

Anna Fontcuberta i Morral, Dirk Grundler, Gözde Tütüncüoglu, Eleonora Russo, Federico Matteini, Reza Zamani

Magnetic nanotubes (NTs) are interesting for magnetic memory and magnonic applications. We report magnetotransport experiments on individual 10 to 20 mu m long Ni and CoFeB NTs with outer diameters ranging from 160 to 390 nm and film thicknesses of 20 to 4 ...

Amer Inst Physics2014

Nonlinear motion and mechanical mixing in as-grown GaAs nanowires

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini

We report nonlinear behavior in the motion of driven nanowire cantilevers. The nonlinearity can be described by the Duffing equation and is used to demonstrate mechanical mixing of two distinct excitation frequencies. Furthermore, we demonstrate that the n ...

American Institute of Physics2014

High-Performance Multipanel Biosensors Based on a Selective Integration of Nanographite Petals

Giovanni De Micheli, László Forró, Sandro Carrara, Arnaud Magrez, Irene Taurino, Federico Matteini, Andrea Cavallini

We report the first selective growth of nanographite petals and various carbon nanomaterials onto a multipanel electrochemical platform. Different types of nanomaterials can be obtained by fine-tuning the growth parameters of the chemical vapor deposition ...

Amer Chemical Soc2014

Investigations of doping via optical pump terahertz-probe spectroscopy

Anna Fontcuberta i Morral, Federico Matteini, Francesca Amaduzzi, Alberto Casadei

Reliable doping in semiconductor nanowires is essential for the development of novel optoelectronic devices. Dopant incorporation within the nanowire can allow for optimisation of key optoelectronic properties, such as electron mobility and carrier lifetim ...

IEEE Computer Societyhelp@computer.org2017

Quantum Heterostructures Based on GaAs Nanomembranes for Photonic Applications

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Martin George Friedl, Federico Matteini, Heidi Andrea Potts, Jean-Baptiste Leran

Ieee2016

Characterization and analysis of InAs/p-Si heterojunction nanowire-based solar cell

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Eleonora Russo, Federico Matteini, Esther Alarcon Llado, Anna Dalmau Mallorquí

The growth of compound semiconductor nanowires on the silicon platform has opened many new perspectives in the area of electronics, optoelectronics and photovoltaics. We have grown a 1 x 1 mm(2) array of InAs nanowires on p-type silicon for the fabrication ...

Institute of Physics2014