Search Results - "Boschetto, D."
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Ultrafast Surface Carrier Dynamics in the Topological Insulator Bi2Te3
Published in Nano letters (11-07-2012)“…We discuss the ultrafast evolution of the surface electronic structure of the topological insulator Bi2Te3 following a femtosecond laser excitation. Using time…”
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2
Coherent phonons in incommensurate LaVS3 crystal
Published in Applied physics letters (01-07-2024)“…In this Letter, we investigate coherent phonon dynamics in the incommensurate LaVS3 crystal by femtosecond pump-probe spectroscopy. Two coherent phonon modes…”
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3
Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
Published in Nature communications (09-01-2017)“…The study of photoexcited strongly correlated materials is attracting growing interest since their rich phase diagram often translates into an equally rich…”
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4
Direct observation of electron thermalization and electron-phonon coupling in photoexcited bismuth
Published in Physical review. B, Condensed matter and materials physics (12-08-2013)“…We investigate the ultrafast response of the bismuth (111) surface by means of time-resolved photoemission spectroscopy. The direct visualization of the…”
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5
Hot carrier transport limits the displacive excitation of coherent phonons in bismuth
Published in Applied physics letters (30-08-2021)“…We performed femtosecond transient reflectivity measurements on epitaxially grown bismuth (Bi) films in the weak photoexcitation regime. Single crystalline…”
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6
Tuning a Schottky barrier in a photoexcited topological insulator with transient Dirac cone electron-hole asymmetry
Published in Nature (London) (01-01-2014)“…The advent of Dirac materials has made it possible to realize two-dimensional gases of relativistic fermions with unprecedented transport properties in…”
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7
Time-resolved structural dynamics of the out-of-equilibrium charge density wave phase transition in GdTe3
Published in Structural dynamics (Melville, N.Y.) (01-01-2022)“…We use ultrafast electron diffraction to study the out-of-equilibrium dynamics of the charge density wave (CDW) phase transition in GdTe3, a…”
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Reply to: Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
Published in Nature communications (06-09-2019)“…Replying to D. Moreno-Mencía et al. Nature Communicationshttps://doi.org/10.1038/s41467-019-11743-3 (2019)…”
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9
Small atomic displacements recorded in bismuth by the optical reflectivity of femtosecond laser-pulse excitations
Published in Physical review letters (18-01-2008)“…Subtle atomic motion in a Bi crystal excited by a 35 fs-laser pulse has been recovered from the transient reflectivity of an optical probe measured with an…”
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10
Coherent optical phonons in different phases of Ge2Sb2Te5 upon strong laser excitation
Published in Applied physics letters (20-06-2011)“…The transient reflectivity response of phase-change Ge2Sb2Te5 films to intense femtosecond laser pulses is studied by ultrafast coherent phonon spectroscopy…”
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11
Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth
Published in Physical review. B, Condensed matter and materials physics (08-10-2008)“…The transient reflectivity of bismuth crystal excited by a 45 fs laser pulse in the near-infrared range has been recovered with an accuracy of 10^−5, at…”
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12
Mott transition in Cr-doped V2O3 studied by ultrafast reflectivity: Electron correlation effects on the transient response
Published in Europhysics letters (01-11-2010)“…The ultrafast response of the prototype Mott-Hubbard system (V1−xCrx)2O3 was systematically studied with fs pump-probe reflectivity, allowing us to clearly…”
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13
Spectral broadening and pulse duration reduction during cross-polarized wave generation : influence of the quadratic spectral phase
Published in Applied physics. B, Lasers and optics (01-06-2007)“…Cross-polarized wave (XPW) generation is used for the contrast improvement of ultra-intense femtosecond laser pulses in a double CPA configuration. We present…”
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14
Ultrafast dielectric function dynamics in bismuth
Published in Journal of modern optics (20-06-2010)“…The time-dependent reflectivity at two angles from a fs-laser-excited single crystal of Bi were simultaneously measured up to 25 ps after a 50-fs pump pulse…”
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Journal Article Conference Proceeding -
15
Superpixel-based automatic segmentation of villi in confocal endomicroscopy
Published in 2016 IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI) (01-02-2016)“…Confocal Laser Endomicroscopy (CLE) is a technique permitting on-site microscopy of the gastrointestinal mucosa after the application of a fluorescent agent,…”
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Conference Proceeding Journal Article -
16
Lifetime of optical phonons in fs-laser excited bismuth
Published in Applied physics. A, Materials science & processing (01-09-2008)“…This paper presents experimental and theoretical results on the temperature-dependent optical response of a single crystal of bismuth to excitation by…”
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17
Spatial coherence properties of a compact and ultrafast laser-produced plasma keV x-ray source
Published in Applied physics letters (01-01-2007)“…The authors use Fresnel diffraction from knife-edges to demonstrate the spatial coherence of a tabletop ultrafast x-ray source produced by laser-plasma…”
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18
Ultrafast dynamical response of strongly correlated oxides: role of coherent optical and acoustic oscillations
Published in Journal of modern optics (20-06-2010)“…We describe some general features in the transient behaviour of strongly correlated transition metal oxides, following ultrafast excitation by a femtosecond…”
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Journal Article Conference Proceeding -
19
Detection and density estimation of goblet cells in confocal endoscopy for the evaluation of celiac disease
Published in 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (01-01-2015)“…Celiac Disease (CD) is an immune-mediated enteropathy, diagnosed in the clinical practice by intestinal biopsy and the concomitant presence of a positive…”
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Conference Proceeding Journal Article -
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Semiautomatic detection of villi in confocal endoscopy for the evaluation of celiac disease
Published in 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (01-08-2015)“…Celiac Disease (CD) is an immune-mediated enteropathy, diagnosed in the clinical practice by intestinal biopsy and the concomitant presence of a positive…”
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Conference Proceeding Journal Article