Luca Bignardi

@units.it

Department of Physics
University of Trieste

Luca Bignardi

RESEARCH, TEACHING, or OTHER INTERESTS

Surfaces and Interfaces, Condensed Matter Physics, General Physics and Astronomy, Physical and Theoretical Chemistry
63

Scopus Publications

1214

Scholar Citations

19

Scholar h-index

39

Scholar i10-index

Scopus Publications

  • Bimetallic Fe–Ni exsolution from A site deficient SrTiO3: insight into the reciprocal role of metal active centers
    Pietro Mariani, Jacopo Orsilli, Henk Stoffel, Simone Mascotto, Damiano Monticelli, Enrico Berretti, Alessandro Lavacchi, Luca Bignardi, Cinzia Cepek, Maria A. Goula, Nikolaos D. Charisiou, Angeliki I. Latsiou, Silvia Mostoni, Barbara Di Credico, Roberto Scotti, Massimiliano D'Arienzo
    Inorganic Chemistry Frontiers, 2026
    Ni–Fe redox exsolution in Sr 0.95 Ti 1− x + y Fe x Ni y O 3± δ were studied by TPR, XAS, STEM, and EPR. Ni interstitial sites enable mobility of Fe subotutional defect and Fe–Ni nanoparticle exsolution, enhancing RWGS via redox activity and H 2 dissociation.
  • Stable n-Type Conduction in WOx-CNT Hybrid Films
    Ayesha Farooq, Luca Bignardi, Matus Stredansky, Marco Caputo, Sharath Sasikumar, Ferdinando Bassato, Regina Ciancio, Simone Dal Zilio, Andrea Goldoni, Paolo Piseri, Tommaso Mazza, Silvia Rubini, Cinzia Cepek
    ACS Applied Electronic Materials, 2025
    High Resolution Image Download MS PowerPoint Slide Nanostructured hybrid films composed of tungsten oxide (WO x ) nanoclusters and vertically aligned carbon nanotubes (CNTs) were synthesized through a combination of chemical vapor deposition and supersonic cluster beam deposition. The use of a cluster source enabled the direct fabrication of oxygen-deficient, nonstoichiometric WO x nanoclusters, which decorated the CNT sidewalls with a characteristic “beaded necklace-style” morphology. Electrical resistance measurements under ethanol exposure in ultrahigh vacuum revealed a distinct behavior consistent with n-type conduction, unlike the intrinsic p-type behavior of pristine CNTs and of WO x films. This inversion is linked to the appearance of an interfacial charge transfer from the oxygen vacancies in the defective WO x nanoclusters to the CNTs, which injects electrons into the CNT network and shifting its Fermi level, thereby inverting the conduction type. Notably, this n-type conduction response remained stable even after prolonged air exposure. These results propose a viable approach to achieving air-stable n-type doping in CNT-based nanostructures.
  • Room temperature water splitting at the basal plane of graphene grown on nickel
    Monica Pozzo, Paolo Lacovig, Marco Bianchi, Monika Schied, Luca Bignardi, Francesca Zarotti, Roberto Felici, Dario Alfè, Silvano Lizzit, Rosanna Larciprete
    Carbon, 2025
    The initial stage of the interaction of water molecules with graphene supported on Ni(111) was studied by combining electronic, structural and scanning probe microscopy techniques with theoretical calculations. We demonstrate the occurrence of dissociative water adsorption at the basal plane of graphene, which renders the surface evenly covered by H atoms, whereas the OH counterparts are somehow removed from the graphene surface. Density functional theory calculations show that water splitting on Gr/Ni(111) is an endothermic process and becomes exothermic when occurs close to pre-adsorbed H atoms or in correspondence of C vacancies. However, the dissociation energy barrier for uni-molecular dissociation becomes compatible with a reasonable reaction rate at room temperature only when it takes place in correspondence of Ni atoms trapped at the C vacancies during Gr growth. On the other hand, due to the limited number of single Ni atoms catalysts in the Gr layer, it seems reasonable that collective adsorption processes or autocatalytic dissociative reactions are largely responsible for the extensive water dissociation observed experimentally.
  • Unraveling the interaction of Ta atoms with Pt(111)
    Kevin Bertrang, Tobias Hinke, Sebastian Kaiser, Matthias Knechtges, Federico Loi, Luca Sbuelz, Paolo Lacovig, Luca Bignardi, Friedrich Esch, Alessandro Baraldi, Sergio Tosoni, Aras Kartouzian, Ulrich Heiz
    Surfaces and Interfaces, 2025
    This study investigates the interaction between Ta and Pt by following the evolution of Ta atoms upon their evaporation in sub-monolayer quantities (∼2 % ML) on a Pt(111) single crystal in vacuo at 40 K. Adsorption and bonding configurations are studied employing high-resolution X-ray photoelectron spectroscopy (HR-XPS). This is combined with density functional theory (DFT) calculations and reference measurements on atomically precise supported clusters that allow disentangling the contributions of distinct surface species to the complex Ta 4f spectra. The transient Ta atom mobility upon evaporation allows - besides atomic adsorption on the terraces - for atom migration to the Pt(111) step edges and the formation of small monolayer ad-islands even at 40 K. Interestingly, the Ta species bonded with Pt can be easily oxidized using a photon-induced O 2 dissociation process, showing the extremely high oxygen affinity of Ta even under the applied ultra-high vacuum (UHV) conditions. Annealing to 900 K leads to the sub-surface migration of Ta and the formation of a sub-surface alloy with Pt. Here, the extremely sharp Ta core-level components are observed at binding energies corresponding to a nominal oxidation state of +2, as confirmed by calculations of the projected density of states (pDOS). This sub-surface alloy is resistant to facile oxidation by atomic oxygen, unlike the Ta surface species that remain susceptible to oxidation. The oxide species and the sub-surface alloy are, however, perfectly interconvertible upon annealing to 900 K in vacuum, respectively in an oxygen environment, and thereby reveal an intriguing interplay between reductive intermixing of Ta and Pt and oxidative Ta segregation.
  • Unveiling Inequality of Atoms in Ultrasmall Pt Clusters: Oxygen Adsorption Limited to the Uppermost Atomic Layer
    Federico Loi, Luca Bignardi, Deborah Perco, Andrea Berti, Paolo Lacovig, Silvano Lizzit, Aras Kartouzian, Ulrich Heiz, Dario Alfè, Alessandro Baraldi
    Small Structures, 2024
    The concept of preferential atomic and molecular adsorption site is of primary relevance in heterogeneous catalysis. In the case of ultrasmall size‐selected clusters, distinguishing the role played by each atom in a reaction is extremely challenging due to their reduced size and peculiar structures. Herein, it is revealed how the inequivalent atoms composing graphene‐supported Pt12 and Pt13 clusters behave differently in the photoinduced dissociation of O2, with only those in the uppermost layer of the clusters being involved in the reaction. In this process, the epitaxial graphene support plays a fundamental active role: its corrugation and pinning induced by the presence of the clusters are crucial for defining the preferential adsorption site on the Pt atomic agglomerates, facilitating the lateral diffusion of physisorbed oxygen at a distance that induces its selective adsorption in the topmost layer of the clusters, and inducing an inhomogeneous charge distribution within the clusters which directly affects the O2 adsorption. The inhomogeneous oxidation of the clusters is resolved by means of synchrotron‐based X‐ray photoelectron spectroscopy and supported by ab initio density functional theory calculations. The possibility to identify the active sites on Pt clusters induced by cluster–support interactions has the potential to enhance the experimentally supported design of nanocatalysts.
  • Unraveling oxygen-driven surface segregation dynamics in platinum-gold alloys
    Andrea Berti, Matteo D’Alessio, Marco Bianchi, Luca Bignardi, Paolo Lacovig, Charlotte Sanders, Silvano Lizzit, Philip Hofmann, Antimo Marrazzo, Alessandro Baraldi
    Applied Surface Science, 2024
    In this study we use high-energy resolution and fast X-ray Photoelectron Spectroscopy (XPS) measurements combined with Density Functional Theory (DFT) calculations to investigate the interplay between surface segregation and bulk migration of Pt atoms on Au(111) in an oxygen environment. We demonstrate that the segregation of Pt atoms is significantly influenced by the oxygen partial pressure and identify a range of O2 pressure where PtAu surface alloy formation is inhibited while promoting the formation of Au oxide. These findings are essential to understand the compositional changes in the bimetallic surface alloy, which could potentially lead to modifying the catalytic properties of PtAu up to catalyst deactivation. Our results offer a strategy to control Pt surface coverage on Au(111), a quantity that is of paramount relevance given the applications of PtAu alloys as catalysts in reactions such as the oxygen reduction reaction or the oxidation of methanol and carbon monoxide. Additionally, our findings indicate a method for controlling the composition and properties of the surface of PtAu catalysts through adjustments made during the formation of the PtAu alloy.
  • Determining the atomic coordination number in the structure of β12 borophene on Ag(111) via X-ray photoelectron diffraction analysis
    Luca Bignardi, Monica Pozzo, Albert Zelenika, Francesco Presel, Paolo Lacovig, Silvano Lizzit, Dario Alfè, Alessandro Baraldi
    Surfaces and Interfaces, 2024
    This study investigates the electronic properties of the borophene β12 phase on Ag(111) and correlates them with specific structural features by combining high-resolution core-level photoelectron spectroscopy, X-ray photoelectron diffraction, and density functional theory-based calculations. We establish a link between the atomic coordination number of the non-equivalent B atoms in the β12 unit cell and the observed spectroscopic signatures in the B 1s spectrum. This finding is conclusively proven by photoelectron diffraction, which confirms that this polymorph exhibits minimal corrugation on Ag(111). These results contribute to a deeper understanding of the properties of various borophene structures on metallic substrates and may stimulate further studies in realizing nanoscaled structures where the atomic coordination number plays a central role.
  • Graphene growth from photo-polymerized bi-phenylthiol self-assembled monolayers
    Tashfeen Zehra, Ali Syari’ati, Oleksii Ivashenko, Luca Bignardi, Willem F. Van Dorp, Jeff T. M. De Hosson, Petra Rudolf
    Frontiers in Nanotechnology, 2024
    We present an enhanced methodology for the synthesis of graphene, from photo-polymerized self-assembled monolayers (SAMs) of 1,1ʹ-biphenyl-4-thiol on both electropolished and oxidized copper substrates. The SAMs were subjected to a two-step process involving light-induced polymerization followed by annealing in a vacuum furnace to yield the two-dimensional solid. Comprehensive characterization using contact angle measurements, X-ray photoelectron spectroscopy, and Raman spectroscopy, as well as scanning electron and transmission electron microscopy, provided conclusive evidence of growth of single-layer graphene. Notably, our findings revealed superior quality graphene on oxidized copper substrates compared to their electropolished counterparts, highlighting the impact of substrate choice on the quality of the resultant material.
  • The highest oxidation state observed in graphene-supported sub-nanometer iron oxide clusters
    Deborah Perco, Federico Loi, Luca Bignardi, Luca Sbuelz, Paolo Lacovig, Ezequiel Tosi, Silvano Lizzit, Aras Kartouzian, Ueli Heiz, Alessandro Baraldi
    Communications Chemistry, 2023
    Size-selected iron oxide nanoclusters are outstanding candidates for technological-oriented applications due to their high efficiency-to-cost ratio. However, despite many theoretical studies, experimental works on their oxidation mechanism are still limited to gas-phase clusters. Herein we investigate the oxidation of graphene-supported size-selected Fen clusters by means of high-resolution X-ray Photoelectron Spectroscopy. We show a dependency of the core electron Fe 2p3/2 binding energy of metallic and oxidized clusters on the cluster size. Binding energies are also linked to chemical reactivity through the asymmetry parameter which is related to electron density of states at the Fermi energy. Upon oxidation, iron atoms in clusters reach the oxidation state Fe(II) and the absence of other oxidation states indicates a Fe-to-O ratio close to 1:1, in agreement with previous theoretical calculations and gas-phase experiments. Such knowledge can provide a basis for a better understanding of the behavior of iron oxide nanoclusters as supported catalysts.
  • In situ observation of the on-surface thermal dehydrogenation of n-octane on Pt(111)
    Daniel Arribas, Víctor Villalobos-Vilda, Ezequiel Tosi, Paolo Lacovig, Alessandro Baraldi, Luca Bignardi, Silvano Lizzit, José Ignacio Martínez, Pedro Luis de Andres, Alejandro Gutiérrez, José Ángel Martín-Gago, Pablo Merino
    Nanoscale, 2023
    We study the thermal dehydrogenation of n-octane on Pt(111) under ultra-high vacuum. Combining scanning tunneling microscopy (STM), photoelectron spectroscopy and mass spectroscopy with calculations, we provide an atomic-scale view of the on-surface products.
  • Breakdown of the correlation between oxidation states and core electron binding energies at the sub-nanoscale
    Federico Loi, Monica Pozzo, Luca Sbuelz, Luca Bignardi, Paolo Lacovig, Ezequiel Tosi, Silvano Lizzit, Aras Kartouzian, Ulrich Heiz, Rosanna Larciprete, Dario Alf è, Alessandro Baraldi
    Applied Surface Science, 2023
  • Interplay among Hydrogen Chemisorption, Intercalation, and Bulk Diffusion at the Graphene-Covered Ni(111) Crystal
    Monica Pozzo, Tommaso Turrini, Luca Bignardi, Paolo Lacovig, Daniel Lizzit, Ezequiel Tosi, Silvano Lizzit, Alessandro Baraldi, Dario Alfè, Rosanna Larciprete
    Journal of Physical Chemistry C, 2023
  • Exploring 2D materials at surfaces through synchrotron-based core-level photoelectron spectroscopy
    Luca Bignardi, Paolo Lacovig, Rosanna Larciprete, Dario Alfè, Silvano Lizzit, Alessandro Baraldi
    Surface Science Reports, 2023
  • Spotting Local Environments in Self-Assembled Monolayer-Protected Gold Nanoparticles
    Cristian Gabellini, Maria Şologan, Elena Pellizzoni, Domenico Marson, Mario Daka, Paola Franchi, Luca Bignardi, Stefano Franchi, Zbyšek Posel, Alessandro Baraldi, Paolo Pengo, Marco Lucarini, Lucia Pasquato, Paola Posocco
    ACS Nano, 2022
  • Oxidation at the sub-nanoscale: oxygen adsorption on graphene-supported size-selected Ag clusters
    Federico Loi, Monica Pozzo, Luca Sbuelz, Luca Bignardi, Paolo Lacovig, Ezequiel Tosi, Silvano Lizzit, Aras Kartouzian, Ueli Heiz, Dario Alfè, Alessandro Baraldi
    Journal of Materials Chemistry A, 2022
  • Thiolate end-group regulates ligand arrangement, hydration and affinity for small compounds in monolayer-protected gold nanoparticles
    Elena Pellizzoni, Maria Şologan, Mario Daka, Paolo Pengo, Domenico Marson, Zbyšek Posel, Stefano Franchi, Luca Bignardi, Paola Franchi, Marco Lucarini, Paola Posocco, Lucia Pasquato
    Journal of Colloid and Interface Science, 2022
  • Vibrational Fine Structure in C 1s High-Resolution Core-Level Spectra of CO Chemisorbed on Ir(111)
    Stefania Baronio, Valeria De Leo, Ginevra Lautizi, Paola Mantegazza, Eleonora Natale, Manuel Tuniz, Stefano Vigneri, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Alessandro Baraldi
    Journal of Physical Chemistry C, 2022
  • Anisotropic strain in epitaxial single-layer molybdenum disulfide on Ag(110)
    Luca Bignardi, Sanjoy K. Mahatha, Daniel Lizzit, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Charlotte Sanders, Alessandro Baraldi, Philip Hofmann, Silvano Lizzit
    Nanoscale, 2021
  • Ultrafast electronic linewidth broadening in the C core level of graphene
    Davide Curcio, Sahar Pakdel, Klara Volckaert, Jill A. Miwa, Søren Ulstrup, Nicola Lanatà, Marco Bianchi, Dmytro Kutnyakhov, Federico Pressacco, Günter Brenner, Siarhei Dziarzhytski, Harald Redlin, Steinn Ymir Agustsson, Katerina Medjanik, Dmitry Vasilyev, Hans-Joachim Elmers, Gerd Schönhense, Christian Tusche, Ying-Jiun Chen, Florian Speck, Thomas Seyller, Kevin Bühlmann, Rafael Gort, Florian Diekmann, Kai Rossnagel, Yves Acremann, Jure Demsar, Wilfried Wurth, Daniel Lizzit, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Charlotte E. Sanders, Philip Hofmann
    Physical Review B, 2021
  • Spectroscopic view of ultrafast charge carrier dynamics in single- and bilayer transition metal dichalcogenide semiconductors
    Paulina Majchrzak, Klara Volckaert, Antonija Grubišić Čabo, Deepnarayan Biswas, Marco Bianchi, Sanjoy K. Mahatha, Maciej Dendzik, Federico Andreatta, Signe S. Grønborg, Igor Marković, Jonathon M. Riley, Jens C. Johannsen, Daniel Lizzit, Luca Bignardi, Silvano Lizzit, Cephise Cacho, Oliver Alexander, Dan Matselyukh, Adam S. Wyatt, Richard T. Chapman, Emma Springate, Jeppe V. Lauritsen, Phil D.C. King, Charlotte E. Sanders, Jill A. Miwa, Philip Hofmann, Søren Ulstrup
    Journal of Electron Spectroscopy and Related Phenomena, 2021
  • Atomic Undercoordination in Ag Islands on Ru(0001) Grown via Size-Selected Cluster Deposition: An Experimental and Theoretical High-Resolution Core-Level Photoemission Study
    Luca Sbuelz, Federico Loi, Monica Pozzo, Luca Bignardi, Eugenio Nicolini, Paolo Lacovig, Ezequiel Tosi, Silvano Lizzit, Aras Kartouzian, Ueli Heiz, Dario Alfé, Alessandro Baraldi
    Journal of Physical Chemistry C, 2021
  • Correction: Unusual reversibility in molecular break-up of PAHs: The case of pentacene dehydrogenation on Ir(111) (Chemical Science (2021) DOI: 10.1039/d0sc03734f)
    Davide Curcio, Emil Sierda, Monica Pozzo, Luca Bignardi, Luca Sbuelz, Paolo Lacovig, Silvano Lizzit, Dario Alfè, Alessandro Baraldi
    Chemical Science, 2021
  • Unusual reversibility in molecular break-up of PAHs: The case of pentacene dehydrogenation on Ir(111)
    Davide Curcio, Emil Sierda, Monica Pozzo, Luca Bignardi, Luca Sbuelz, Paolo Lacovig, Silvano Lizzit, Dario Alfè, Alessandro Baraldi
    Chemical Science, 2021
  • Growth Mechanism and Thermal Stability of a MoS2-Graphene Interface: A High-Resolution Core-Level Photoelectron Spectroscopy Study
    Federico Loi, Luca Sbuelz, Paolo Lacovig, Daniel Lizzit, Luca Bignardi, Silvano Lizzit, Alessandro Baraldi
    Journal of Physical Chemistry C, 2020
  • Correction: Situ Synthesis of Metal-Salophene Complexes on Intercalated Graphene (The Journal of Physical Chemistry C (2020) 124: 7 (4279−4287) DOI: 10.1021/acs.jpcc.9b08943)
    Micha Elsebach, Emil Sierda, Julia J. Goedecke, Luca Bignardi, Michal Hermanowicz, Michael Rohde, Roland Wiesendanger, Maciej Bazarnik
    Journal of Physical Chemistry C, 2020
  • In Situ Synthesis of Metal-Salophene Complexes on Intercalated Graphene
    Micha Elsebach, Emil Sierda, Julia J. Goedecke, Luca Bignardi, Michal Hermanowicz, Michael Rohde, Roland Wiesendanger, Maciej Bazarnik
    Journal of Physical Chemistry C, 2020
  • Interfacial two-dimensional oxide enhances photocatalytic activity of graphene/titania via electronic structure modification
    Dario De Angelis, Francesco Presel, Naila Jabeen, Luca Bignardi, Daniel Lizzit, Paolo Lacovig, Silvano Lizzit, Tiziano Montini, Paolo Fornasiero, Dario Alfè, Alessandro Baraldi
    Carbon, 2020
  • Layer and orbital interference effects in photoemission from transition metal dichalcogenides
    Habib Rostami, Klara Volckaert, Nicola Lanata, Sanjoy K. Mahatha, Charlotte E. Sanders, Marco Bianchi, Daniel Lizzit, Luca Bignardi, Silvano Lizzit, Jill A. Miwa, Alexander V. Balatsky, Philip Hofmann, Søren Ulstrup
    Physical Review B, 2019
  • Momentum-resolved linear dichroism in bilayer MoS2
    Klara Volckaert, Habib Rostami, Deepnarayan Biswas, Igor Marković, Federico Andreatta, Charlotte E. Sanders, Paulina Majchrzak, Cephise Cacho, Richard T. Chapman, Adam Wyatt, Emma Springate, Daniel Lizzit, Luca Bignardi, Silvano Lizzit, Sanjoy K. Mahatha, Marco Bianchi, Nicola Lanata, Phil D. C. King, Jill A. Miwa, Alexander V. Balatsky, Philip Hofmann, Søren Ulstrup
    Physical Review B, 2019
  • 80% Valley Polarization of Free Carriers in Singly Oriented Single-Layer WS2 on Au(111)
    H. Beyer, G. Rohde, A. Grubišić Čabo, A. Stange, T. Jacobsen, L. Bignardi, D. Lizzit, P. Lacovig, C. E. Sanders, S. Lizzit, K. Rossnagel, P. Hofmann, M. Bauer
    Physical Review Letters, 2019
  • Electron–phonon coupling in single-layer MoS2
    Sanjoy K. Mahatha, Arlette S. Ngankeu, Nicki Frank Hinsche, Ingrid Mertig, Kevin Guilloy, Peter L. Matzen, Marco Bianchi, Charlotte E. Sanders, Jill A. Miwa, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Luca Bignardi, Daniel Lizzit, Rosanna Larciprete, Alessandro Baraldi, Silvano Lizzit, Philip Hofmann
    Surface Science, 2019
  • Dual-Route Hydrogenation of the Graphene/Ni Interface
    Daniel Lizzit, Mario I. Trioni, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Rocco Martinazzo, Rosanna Larciprete
    ACS Nano, 2019
  • Metal phthalocyanines interaction with Co mediated by a moiré graphene superlattice
    Giulia Avvisati, Pierluigi Gargiani, Pierluigi Mondelli, Francesco Presel, Luca Bignardi, Alessandro Baraldi, Maria Grazia Betti
    Journal of Chemical Physics, 2019
  • Growth and structure of singly oriented single-layer tungsten disulfide on Au(111)
    Luca Bignardi, Daniel Lizzit, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Charlotte E. Sanders, Maciej Dendzik, Matteo Michiardi, Marco Bianchi, Moritz Ewert, Lars Buß, Jens Falta, Jan Ingo Flege, Alessandro Baraldi, Rosanna Larciprete, Philip Hofmann, Silvano Lizzit
    Physical Review Materials, 2019
  • Hydrogen interaction with graphene on Ir(1 1 1): A combined intercalation and functionalization study
    Richard Balog, Andrew Cassidy, Jakob Jørgensen, Line Kyhl, Mie Andersen, Antonija Grubišić Čabo, Foteini Ravani, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Liv Hornekær
    Journal of Physics Condensed Matter, 2019
  • Photoemission investigation of oxygen intercalated epitaxial graphene on Ru(0001)
    Søren Ulstrup, Paolo Lacovig, Fabrizio Orlando, Daniel Lizzit, Luca Bignardi, Matteo Dalmiglio, Marco Bianchi, Federico Mazzola, Alessandro Baraldi, Rosanna Larciprete, Philip Hofmann, Silvano Lizzit
    Surface Science, 2018
  • Spin Structure of K Valleys in Single-Layer WS2 on Au(111)
    Philipp Eickholt, Charlotte Sanders, Maciej Dendzik, Luca Bignardi, Daniel Lizzit, Silvano Lizzit, Albert Bruix, Philip Hofmann, Markus Donath
    Physical Review Letters, 2018
  • Novel single-layer vanadium sulphide phases
    Fabian Arnold, Raluca-Maria Stan, Sanjoy K Mahatha, H E Lund, Davide Curcio, Maciej Dendzik, Harsh Bana, Elisabetta Travaglia, Luca Bignardi, Paolo Lacovig, Daniel Lizzit, Zheshen Li, Marco Bianchi, Jill A Miwa, Martin Bremholm, Silvano Lizzit, Philip Hofmann, C E Sanders
    2d Materials, 2018
  • Epitaxial growth of single-orientation high-quality MoS2 monolayers
    Harsh Bana, Elisabetta Travaglia, Luca Bignardi, Paolo Lacovig, Charlotte E Sanders, Maciej Dendzik, Matteo Michiardi, Marco Bianchi, Daniel Lizzit, Francesco Presel, Dario De Angelis, Nicoleta Apostol, Pranab Kumar Das, Jun Fujii, Ivana Vobornik, Rosanna Larciprete, Alessandro Baraldi, Philip Hofmann, Silvano Lizzit
    2d Materials, 2018
  • Graphene growth by molecular beam epitaxy: An interplay between desorption, diffusion and intercalation of elemental C species on islands
    Francesco Presel, Holly Tetlow, Luca Bignardi, Paolo Lacovig, Cristian A. Tache, Silvano Lizzit, Lev Kantorovich, Alessandro Baraldi
    Nanoscale, 2018
  • The adsorption of silicon on an iridium surface ruling out silicene growth
    Mauro Satta, Paolo Lacovig, Nicoleta Apostol, Matteo Dalmiglio, Fabrizio Orlando, Luca Bignardi, Harsh Bana, Elisabetta Travaglia, Alessandro Baraldi, Silvano Lizzit, Rosanna Larciprete
    Nanoscale, 2018
  • Combined Experimental and Theoretical Study of Methyl Acetoacetate Adsorption on Ni{100}
    Panayiotis Tsaousis, Jorge Ontaneda, Luca Bignardi, Roger A. Bennett, Ricardo Grau-Crespo, Georg Held
    Journal of Physical Chemistry C, 2018
  • Exciting H2 molecules for graphene functionalization
    Line Kyhl, Régis Bisson, Richard Balog, Michael N. Groves, Esben Leonhard Kolsbjerg, Andrew Martin Cassidy, Jakob Holm Jørgensen, Susanne Halkjær, Jill A. Miwa, Antonija Grubišić Čabo, Thierry Angot, Philip Hofmann, Mohammad Alif Arman, Samuli Urpelainen, Paolo Lacovig, Luca Bignardi, Hendrik Bluhm, Jan Knudsen, Bjørk Hammer, Liv Hornekaer
    ACS Nano, 2018
  • Comparison of surface structures of corundum Cr2O3(0 0 0 1) and V2O3(0 0 0 1) ultrathin films by x-ray photoelectron diffraction
    Alan Kramer, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Matthias Batzill
    Journal of Physics Condensed Matter, 2018
  • A first-principles study of stability of surface confined mixed metal oxides with corundum structure (Fe2O3, Cr2O3, V2O3)
    A. S. M. Jonayat, Alan Kramer, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Adri C.T. van Duin, Matthias Batzill, Michael J. Janik
    Physical Chemistry Chemical Physics, 2018
  • Free surfaces recast superconductivity in few-monolayer MgB2: Combined first-principles and ARPES demonstration
    J. Bekaert, L. Bignardi, A. Aperis, P. van Abswoude, C. Mattevi, S. Gorovikov, L. Petaccia, A. Goldoni, B. Partoens, P. M. Oppeneer, F. M. Peeters, M. V. Milošević, P. Rudolf, C. Cepek
    Scientific Reports, 2017
  • Facing the interaction of absorbed silicon nano-ribbons on silver
    Philipp Espeter, Christoph Keutner, Peter Roese, Karim Shamout, Ulf Berges, Gabi Wenzel, Luca Bignardi, Nils Fabian Kleimeier, Helmut Zacharias, Carsten Westphal
    Nanotechnology, 2017
  • Spin-dependent electron-phonon coupling in the valence band of single-layer WS2
    Nicki Frank Hinsche, Arlette S. Ngankeu, Kevin Guilloy, Sanjoy K. Mahatha, Antonija Grubišić Čabo, Marco Bianchi, Maciej Dendzik, Charlotte E. Sanders, Jill A. Miwa, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Luca Bignardi, Rosanna Larciprete, Alessandro Baraldi, Silvano Lizzit, Kristian Sommer Thygesen, Philip Hofmann
    Physical Review B, 2017
  • Key role of rotated domains in oxygen intercalation at graphene on Ni(1 1 1)
    Luca Bignardi, Paolo Lacovig, Matteo M Dalmiglio, Fabrizio Orlando, Aliakbar Ghafari, Luca Petaccia, Alessandro Baraldi, Rosanna Larciprete, Silvano Lizzit
    2d Materials, 2017
  • Periodic Modulation of Graphene by a 2D-FeO/Ir(111) Moiré Interlayer
    Yujing Ma, Elisabetta Travaglia, Harsh Bana, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Matthias Batzill
    Journal of Physical Chemistry C, 2017
  • An ordered mixed oxide monolayer formed by iron segregation on Rutile-TiO2(011): Structural determination by x-ray photoelectron diffraction
    Sandamali Halpegamage, Luca Bignardi, Paolo Lacovig, Alan Kramer, Zhan-Hui Wen, Xue-Qing Gong, Silvano Lizzit, Matthias Batzill
    Journal of Physical Chemistry C, 2016
  • Surface states resonances at the single-layer graphene/Cu(111) interface
    S. Tognolini, S. Pagliara, L. Bignardi, S. Ponzoni, P. Rudolf, F. Parmigiani
    Surface Science, 2016
  • Strain Lattice Imprinting in Graphene by C60 Intercalation at the Graphene/Cu Interface
    E. Monazami, L. Bignardi, P. Rudolf, P. Reinke
    Nano Letters, 2015
  • Nature of the surface states at the single-layer graphene/Cu(111) and graphene/polycrystalline-Cu interfaces
    S. Pagliara, S. Tognolini, L. Bignardi, G. Galimberti, S. Achilli, M. I. Trioni, W. F. van Dorp, V. Ocelík, P. Rudolf, F. Parmigiani
    Physical Review B Condensed Matter and Materials Physics, 2015
  • Comparing graphene growth on Cu(111) versus oxidized Cu(111)
    Stefano Gottardi, Kathrin Müller, Luca Bignardi, Juan Carlos Moreno-López, Tuan Anh Pham, Oleksii Ivashenko, Mikhail Yablonskikh, Alexei Barinov, Jonas Björk, Petra Rudolf, Meike Stöhr
    Nano Letters, 2015
  • Electron dynamics in unoccupied states of spatially aligned 7-a graphene nanoribbons on Au(788)
    N. F. Kleimeier, A. Timmer, L. Bignardi, H. Mönig, X. L. Feng, K. Müllen, L. F. Chi, H. Fuchs, H. Zacharias
    Physical Review B Condensed Matter and Materials Physics, 2014
  • Thermolubricity of gas monolayers on graphene
    Matteo Pierno, Luca Bignardi, Maria Clelia Righi, Lorenzo Bruschi, Stefano Gottardi, Meike Stöhr, Oleksii Ivashenko, Pier Luigi Silvestrelli, Petra Rudolf, Giampaolo Mistura
    Nanoscale, 2014
  • Dual character of excited charge carriers in graphene on Ni(111)
    L. Bignardi, T. Haarlammert, C. Winter, M. Montagnese, P. H. M. van Loosdrecht, E. Voloshina, P. Rudolf, H. Zacharias
    Physical Review B Condensed Matter and Materials Physics, 2014
  • Microscopic characterisation of suspended graphene grown by chemical vapour deposition
    Luca Bignardi, Willem F. van Dorp, Stefano Gottardi, Oleksii Ivashenko, Pavel Dudin, Alexei Barinov, Jeff Th. M. De Hosson, Meike Stöhr, Petra Rudolf
    Nanoscale, 2013
  • Final-state effects in photoemission experiments from graphene on Ni(111)
    Thorben Haarlammert, Luca Bignardi, Carsten Winter, Gerhard Fecher, Petra Rudolf, Helmut Zacharias
    European Physical Journal B, 2013
  • Comparison of hot-electron transmission in ferromagnetic Ni on epitaxial and polycrystalline Schottky interfaces
    S. Parui, K. G. Rana, L. Bignardi, P. Rudolf, B. J. van Wees, T. Banerjee
    Physical Review B Condensed Matter and Materials Physics, 2012
  • Hot electron transmission in metals using epitaxial NiSi 2/n-Si(111) interfaces
    S. Parui, B. Wit, L. Bignardi, P. Rudolf, B. Kooi, B. J. van Wees, T. Banerjee
    Applied Physics Letters, 2011
  • Local order and non-linear optical properties in bulk nanostructured niobiosilicate glasses
    A. Aronne, E. Fanelli, P. Pernice, M. Malvestuto, P. Bergese, E. Bontempi, P. Colombi, L.E. Depero, L. Bignardi, C. Giannetti, G. Ferrini, F. Parmigiani
    Journal of Non Crystalline Solids, 2011

RECENT SCHOLAR PUBLICATIONS

  • On-surface dehydrogenative lateral homo-coupling and aromatization of n-octane on Pt (111)
    D Arribas, E Tosi, V Villalobos-Vilda, B Cirera, I Palacio, ...
    arXiv preprint arXiv:2601.18600 , 2026
    2026
  • Bimetallic Fe–Ni exsolution from A site deficient SrTiO 3: insight into the reciprocal role of metal active centers
    P Mariani, J Orsilli, H Stoffel, S Mascotto, D Monticelli, E Berretti, ...
    Inorganic Chemistry Frontiers 13 (7), 3154-3169 , 2026
    2026
    Citations: 1
  • Stable n-Type Conduction in WO x -CNT Hybrid Films
    A Farooq, L Bignardi, M Stredansky, M Caputo, S Sasikumar, F Bassato, ...
    ACS Applied Electronic Materials 7 (22), 10438-10445 , 2025
    2025
  • Room temperature water splitting at the basal plane of graphene grown on nickel
    M Pozzo, P Lacovig, M Bianchi, M Schied, L Bignardi, F Zarotti, R Felici, ...
    Carbon 243, 120422 , 2025
    2025
    Citations: 1
  • Unraveling the interaction of Ta atoms with Pt (111)
    K Bertrang, T Hinke, S Kaiser, M Knechtges, F Loi, L Sbuelz, P Lacovig, ...
    Surfaces and Interfaces 56, 105640 , 2025
    2025
    Citations: 2
  • Unveiling Inequality of Atoms in Ultrasmall Pt Clusters: Oxygen Adsorption Limited to the Uppermost Atomic Layer
    F Loi, L Bignardi, D Perco, A Berti, P Lacovig, S Lizzit, A Kartouzian, ...
    Small Structures 5 (11), 2400250 , 2024
    2024
    Citations: 5
  • Unraveling oxygen-driven surface segregation dynamics in platinum-gold alloys
    A Berti, M D’Alessio, M Bianchi, L Bignardi, P Lacovig, C Sanders, S Lizzit, ...
    Applied Surface Science 670, 160577 , 2024
    2024
    Citations: 6
  • Determining the atomic coordination number in the structure of Β12 borophene on Ag (111) via X-ray photoelectron diffraction analysis
    L Bignardi, M Pozzo, A Zelenika, F Presel, P Lacovig, S Lizzit, D Alfè, ...
    Surfaces and Interfaces 51, 104791 , 2024
    2024
    Citations: 5
  • Graphene growth from photo-polymerized bi-phenylthiol self-assembled monolayers
    T Zehra, A Syari’Ati, O Ivashenko, L Bignardi, WF Van Dorp, ...
    Frontiers in Nanotechnology 6, 1366542 , 2024
    2024
    Citations: 1
  • Attosecond dynamics of photoemission over a wide photon energy range
    C Schröder, J Riemensberger, R Kuzian, M Ossiander, D Potamianos, ...
    2023
  • In situ observation of the on-surface thermal dehydrogenation of n -octane on Pt(111) (July, 10.1039/d3nr02564k, 2023)
    D Arribas, V Villalobos-Vilda, E Tosi, P Lacovig, A Baraldi, L Bignardi, ...
    NANOSCALE , 2023
    2023
  • Breakdown of the correlation between oxidation states and core electron binding energies at the sub-nanoscale
    F Loi, M Pozzo, L Sbuelz, L Bignardi, P Lacovig, E Tosi, S Lizzit, ...
    Applied Surface Science 619, 156755 , 2023
    2023
    Citations: 17
  • The highest oxidation state observed in graphene-supported sub-nanometer iron oxide clusters
    D Perco, F Loi, L Bignardi, L Sbuelz, P Lacovig, E Tosi, S Lizzit, ...
    Communications Chemistry 6 (1), 61 , 2023
    2023
    Citations: 18
  • Interplay among hydrogen chemisorption, intercalation, and bulk diffusion at the graphene-covered Ni (111) crystal
    M Pozzo, T Turrini, L Bignardi, P Lacovig, D Lizzit, E Tosi, S Lizzit, ...
    The Journal of Physical Chemistry C 127 (14), 6938-6947 , 2023
    2023
    Citations: 10
  • Exploring 2D materials at surfaces through synchrotron-based core-level photoelectron spectroscopy
    L Bignardi, P Lacovig, R Larciprete, D Alfe, S Lizzit, A Baraldi
    Surface Science Reports 78 (1), 100586 , 2023
    2023
    Citations: 18
  • Correction: In situ observation of the on-surface thermal dehydrogenation of n-octane on Pt (111)
    D Arribas, V Villalobos-Vilda, E Tosi, P Lacovig, A Baraldi, L Bignardi, ...
    Nanoscale 15 (35), 14680-14680 , 2023
    2023
  • In situ observation of the on-surface thermal dehydrogenation of n-octane on Pt (111)
    D Arribas, V Villalobos-Vilda, E Tosi, P Lacovig, A Baraldi, L Bignardi, ...
    Nanoscale 15 (35), 14458-14467 , 2023
    2023
    Citations: 7
  • Spotting Local Environments in Self-Assembled Monolayer-Protected Gold Nanoparticles
    C Gabellini, M Sologan, E Pellizzoni, D Marson, M Daka, P Franchi, ...
    ACS nano 16 (12), 20902-20914 , 2022
    2022
    Citations: 15
  • Thiolate end-group regulates ligand arrangement, hydration and affinity for small compounds in monolayer-protected gold nanoparticles
    E Pellizzoni, M Şologan, M Daka, P Pengo, D Marson, Z Posel, S Franchi, ...
    Journal of Colloid and Interface Science 607, 1373-1381 , 2022
    2022
    Citations: 7
  • Vibrational fine structure in c 1s high-resolution core-level spectra of co chemisorbed on ir (111)
    S Baronio, VD Leo, G Lautizi, P Mantegazza, E Natale, M Tuniz, S Vigneri, ...
    The Journal of Physical Chemistry C 126 (3), 1411-1419 , 2022
    2022
    Citations: 7

MOST CITED SCHOLAR PUBLICATIONS

  • Comparing graphene growth on Cu (111) versus oxidized Cu (111)
    S Gottardi, K Müller, L Bignardi, JC Moreno-López, TA Pham, ...
    Nano letters 15 (2), 917-922 , 2015
    2015
    Citations: 147
  • Epitaxial growth of single-orientation high-quality MoS 2 monolayers
    H Bana, E Travaglia, L Bignardi, P Lacovig, CE Sanders, M Dendzik, ...
    2D Materials 5 (3), 035012 , 2018
    2018
    Citations: 91
  • Novel single-layer vanadium sulphide phases
    F Arnold, RM Stan, SK Mahatha, HE Lund, D Curcio, M Dendzik, H Bana, ...
    2D Materials 5 (4), 045009 , 2018
    2018
    Citations: 64
  • 80% Valley Polarization of Free Carriers in Singly Oriented Single-Layer on Au(111)
    H Beyer, G Rohde, A Grubišić Čabo, A Stange, T Jacobsen, L Bignardi, ...
    Physical review letters 123 (23), 236802 , 2019
    2019
    Citations: 46
  • Spin Structure of Valleys in Single-Layer on Au(111)
    P Eickholt, C Sanders, M Dendzik, L Bignardi, D Lizzit, S Lizzit, A Bruix, ...
    Physical review letters 121 (13), 136402 , 2018
    2018
    Citations: 43
  • Free surfaces recast superconductivity in few-monolayer MgB 2 : Combined first-principles and ARPES demonstration
    J Bekaert, L Bignardi, A Aperis, P Van Abswoude, C Mattevi, S Gorovikov, ...
    Scientific reports 7 (1), 14458 , 2017
    2017
    Citations: 43
  • Growth and structure of singly oriented single-layer tungsten disulfide on Au (111)
    L Bignardi, D Lizzit, H Bana, E Travaglia, P Lacovig, CE Sanders, ...
    Physical Review Materials 3 (1), 014003 , 2019
    2019
    Citations: 38
  • Exciting H 2 Molecules for Graphene Functionalization
    L Kyhl, R Bisson, R Balog, MN Groves, EL Kolsbjerg, AM Cassidy, ...
    ACS nano 12 (1), 513-520 , 2017
    2017
    Citations: 36
  • Spin-dependent electron-phonon coupling in the valence band of single-layer
    NF Hinsche, AS Ngankeu, K Guilloy, SK Mahatha, A Grubišić Čabo, ...
    Physical Review B 96 (12), 121402 , 2017
    2017
    Citations: 34
  • Strain Lattice Imprinting in Graphene by C 60 Intercalation at the Graphene/Cu Interface
    E Monazami, L Bignardi, P Rudolf, P Reinke
    Nano letters 15 (11), 7421-7430 , 2015
    2015
    Citations: 33
  • Ultrafast electronic linewidth broadening in the C core level of graphene
    D Curcio, S Pakdel, K Volckaert, JA Miwa, S Ulstrup, N Lanatà, M Bianchi, ...
    Physical Review B 104 (16), L161104 , 2021
    2021
    Citations: 32
  • Key role of rotated domains in oxygen intercalation at graphene on Ni (1 1 1)
    L Bignardi, P Lacovig, MM Dalmiglio, F Orlando, A Ghafari, L Petaccia, ...
    2D Materials 4 (2), 025106 , 2017
    2017
    Citations: 31
  • Dual-route hydrogenation of the graphene/Ni interface
    D Lizzit, MI Trioni, L Bignardi, P Lacovig, S Lizzit, R Martinazzo, ...
    ACS nano 13 (2), 1828-1838 , 2019
    2019
    Citations: 30
  • Photoemission investigation of oxygen intercalated epitaxial graphene on Ru (0001)
    S Ulstrup, P Lacovig, F Orlando, D Lizzit, L Bignardi, M Dalmiglio, ...
    Surface Science 678, 57-64 , 2018
    2018
    Citations: 29
  • Graphene growth by molecular beam epitaxy: an interplay between desorption, diffusion and intercalation of elemental C species on islands
    F Presel, H Tetlow, L Bignardi, P Lacovig, CA Tache, S Lizzit, ...
    Nanoscale 10 (16), 7396-7406 , 2018
    2018
    Citations: 27
  • Layer and orbital interference effects in photoemission from transition metal dichalcogenides
    H Rostami, K Volckaert, N Lanata, SK Mahatha, CE Sanders, M Bianchi, ...
    Physical Review B 100 (23), 235423 , 2019
    2019
    Citations: 22
  • Facing the interaction of adsorbed silicon nano-ribbons on silver
    P Espeter, C Keutner, P Roese, K Shamout, U Berges, G Wenzel, ...
    Nanotechnology 28 (45), 455701 , 2017
    2017
    Citations: 20
  • Nature of the surface states at the single-layer graphene/Cu (111) and graphene/polycrystalline-Cu interfaces
    S Pagliara, S Tognolini, L Bignardi, G Galimberti, S Achilli, MI Trioni, ...
    Physical Review B 91 (19), 195440 , 2015
    2015
    Citations: 20
  • Microscopic characterisation of suspended graphene grown by chemical vapour deposition
    L Bignardi, WF Van Dorp, S Gottardi, O Ivashenko, P Dudin, A Barinov, ...
    Nanoscale 5 (19), 9057-9061 , 2013
    2013
    Citations: 20
  • Momentum-resolved linear dichroism in bilayer
    K Volckaert, H Rostami, D Biswas, I Marković, F Andreatta, CE Sanders, ...
    Physical Review B 100 (24), 241406 , 2019
    2019
    Citations: 19