Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Sassi, U"'
Autor:
Dwivedi, N., Ott, A. K., Sasikumar, K., Dou, C., Yeo, R. J., Narayanan, B., Sassi, U., De Fazio, D., Soavi, G., Dutta, T., Sankaranarayanan, S. K. R. S., Ferrari, A. C., Bhatia, C. S.
Publikováno v:
Nature Commun. 12, 2854 (2021)
Hard disk drives (HDDs) are used as secondary storage in a number of digital electronic devices owing to low cost ($<$0.1\$/GB at 2016 prices) and large data storage capacity (10TB with a 3.5 inch HDD). Due to the exponentially increasing amount of d
Externí odkaz:
http://arxiv.org/abs/1906.00338
Autor:
Wang, Z., Molina-Sanchez, A., Altmann, P., Sangalli, D., De Fazio, D., Soavi, G., Sassi, U., Bottegoni, F., Ciccacci, F., Finazzi, M., Wirtz, L., Ferrari, A. C., Marini, A., Cerullo, G., Conte, S. Dal
In monolayer Transition Metal Dichalcogenides (TMDs) the valence and conduction bands are spin split because of the strong spin-orbit interaction. In tungsten-based TMDs the spin-ordering of the conduction band is such that the so-called dark exciton
Externí odkaz:
http://arxiv.org/abs/1805.06259
Publikováno v:
2d Materials 5, 045028 (2018)
Resistive-switching memories are alternative to Si-based ones, which face scaling and high power consumption issues. Tetrahedral amorphous carbon (ta-C) shows reversible, non-volatile resistive switching. Here we report polarity independent ta-C resi
Externí odkaz:
http://arxiv.org/abs/1805.02100
Autor:
Casalino, M., Sassi, U., Goykhman, I., Eiden, A., Lidorikis, E., Milana, S., De Fazio, D., Tomarchio, F., Iodice, M., Coppola, G., Ferrari, A. C.
Publikováno v:
ACS Nano 11, 10955 (2017)
We report vertically-illuminated, resonant cavity enhanced, graphene-Si Schottky photodetectors (PDs) operating at 1550nm. These exploit internal photoemission at the graphene-Si interface. To obtain spectral selectivity and enhance responsivity, the
Externí odkaz:
http://arxiv.org/abs/1708.07102
Autor:
Ferrante, C., Virga, A., Benfatto, L., Martinati, M., De Fazio, D., Sassi, U., Fasolato, C., Ott, A. K., Postorino, P., Yoon, D., Cerullo, G., Mauri, F., Ferrari, A. C., Scopigno, T.
Publikováno v:
Nat. Commun.,9, 308 (2018)
The equilibrium optical phonons of graphene are well characterized in terms of anharmonicity and electron-phonon interactions, however their non-equilibrium properties in the presence of hot charge carriers are still not fully explored. Here we study
Externí odkaz:
http://arxiv.org/abs/1704.00186
Autor:
Sassi, U., Parret, R., Nanot, S., Bruna, M., Borini, S., Milana, S., De Fazio, D., Zhuang, Z., Lidorikis, E., Koppens, F. H. L., Ferrari, A. C., Colli, A.
Publikováno v:
Nature Communications 8, 14311 (2017)
Graphene is ideally suited for photonic and optoelectronic applications, with a variety of photodetectors (PDs) in the visible, near-infrared (NIR), and THz reported to date, as well as thermal detectors in the mid-infrared (MIR). Here, we present a
Externí odkaz:
http://arxiv.org/abs/1608.00569
Autor:
De Fazio, D., Goykhman, I., Bruna, M., Eiden, A., Milana, S., Yoon, D., Sassi, U., Barbone, M., Dumcenco, D., Marinov, K., Kis, A., Ferrari, A. C.
Publikováno v:
ACS Nano, 10, 8252 (2016)
We present flexible photodetectors (PDs) for visible wavelengths fabricated by stacking centimetre-scale chemical vapour deposited (CVD) single layer graphene (SLG) and single layer CVD MoS2, both wet transferred onto a flexible polyethylene terephth
Externí odkaz:
http://arxiv.org/abs/1512.08312
Autor:
Trushin, M., Grupp, A., Soavi, G., Budweg, A., De Fazio, D., Sassi, U., Lombardo, A., Ferrari, A. C., Belzig, W., Leitenstorfer, A., Brida, D.
Publikováno v:
Phys. Rev. B 92, 165429 (2015)
Interband optical transitions in graphene are subject to pseudospin selection rules. Impulsive excitation with linearly polarized light generates an anisotropic photocarrier occupation in momentum space that evolves at timescales shorter than 100fs.
Externí odkaz:
http://arxiv.org/abs/1507.08663
Publikováno v:
Nano Lett. 16, 8 (2016)
The combination of plasmonic nanoparticles and graphene enhances the responsivity and spectral selectivity of graphene-based photodetectors. However, the small area of the metal-graphene junction, where the induced electron-hole pairs separate, limit
Externí odkaz:
http://arxiv.org/abs/1505.06721
Publikováno v:
ACS Nano 8, 7432 (2014)
We investigate the evolution of the Raman spectrum of defected graphene as a function of doping. Polymer electrolyte gating allows us to move the Fermi level up to 0.7eV, as monitored by \textit{in-situ} Hall-effect measurements. For a given number o
Externí odkaz:
http://arxiv.org/abs/1405.4264