A5011219114- 2D Materials and Applications
- Photonic and Optical Devices
- MXene and MAX Phase Materials
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Graphene research and applications
- Perovskite Materials and Applications
- Strong Light-Matter Interactions
- Liquid Crystal Research Advancements
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- ZnO doping and properties
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Nonlinear Optical Materials Studies
- Nanowire Synthesis and Applications
- Optical Coatings and Gratings
- Conducting polymers and applications
University of Genoa
2022-2025
Large area stacking of van der Waals heterostructure arrays, based on 2D Transition Metal Dichalcogenide semiconductors (TMDs), is achieved by an original physical deposition process utilizing Ion Beam Sputtering. Silica substrates endowed with periodically faceted nanoridges are fabricated using interference lithography and serve as templates for maskless TMD at glancing angles. This approach enables the creation laterally confined few-layer WS2 nanostripe arrays coated MoS2 films. The...
The strategic field of renewable energy production and storage requires novel nanoscale platforms that can feature competitive solar conversion properties. Photochemical reactions promote storage, such as water splitting oxygen-hydrogen evolution reactions, play a crucial role in this context. Here, we demonstrate photoelectrochemical device based on large-area (cm2) self-organized Au nanowire (NW) arrays, uniformly coated with ultrathin TiO2 films. NW arrays act both transparent...
Abstract 2D transition metal dichalcogenide semiconductor (TMDs) nanocircuits are deterministically engineered over large‐scale substrates. This original additive nanolithography approach combines large‐area physical growth of TMDs layer with high resolution thermal‐scanning probe lithography, to reshape the ultra‐thin semiconducting layers at nanoscale level. The nanofabrication few‐layer MoS 2 nanostructures controlled thickness, grown in 2H‐semiconducting phase, is demonstrated as shown...
We show flat-optics photon harvesting in large-area polymeric/MoS 2 nanogrooved templates. The strong optical confinement into the ultra-thin MoS boosts photobleaching of polluting dyes, paving way for realistic photoconversion applications.
Abstract Fostered by the recent advancements in photonic technologies, need for all-optical dynamic control on complex elements is emerging as more and relevant, especially integrated photonics metasurface-based flat-optics. In this framework, optically-induced anisotropy has been proposed powerful mean enabling tuning functionalities several planar architectures. Here, we design fabricate an anisotropic two-dimensional bull’s eye cavity inscribed within optically-active polymeric film spun...
Large area MoS 2 –WS van der Waals heterostructures have been fabricated using a physical deposition process. The type-II band alignment promotes electro-optical photoconversion and enhances organic pollutant photodissociation.
The coupling of nanostructures with emerging 2D semiconductors is gaining significant interest thanks to the unique features these hybrids systems, which make them key platforms for next‐generation applications in electronics, optoelectronics, and sensing. Top‐down lithographic approaches uniquely enable fully deterministic high‐resolution fabrication nanostructures, but some them, like electron‐beam lithography focused ion‐beam lithography, employ energetic particles that may damage...
Header Two-dimensional (2D) Transition Metal Dichalcogenide semiconductors (TMDs) are a promising platform in view of developing novel generation optoelectronics devices and renewable photon to energy conversion technologies. However new ultra-compact harvesting schemes urgently required mitigate their poor absorption properties. In this work we propose flat-optic solution where few layers MoS 2 film is conformally deposited on large area (cm ) nanogrooved template. The subwavelength...
In this work, we make a step forward in the manipulation of light on surface one-dimensional photonic crystal through Bloch Surface Waves (BSW) within resonant structures various types. Linear Fabry-Perot cavities eventually combined with diffraction gratings allow to directly couple BSW from free-space radiation. Design, fabrication and experimental characterization are provided.
Two-dimensional (2D) Transition Metal Dichalcogenide semiconductor (TMDs) nanocircuits are deterministically engineered over large-scale substrates. The original approach combines large-area physical growth of 2D TMDs layer with high resolution thermal - Scanning Probe Lithography (t-SPL), to reshape the ultra-thin semiconducting layers at nanoscale level. We demonstrate additive nanofabrication few-layer MoS2 nanostructures, grown in 2H-semiconducting TMD phase, as shown by their Raman...
In this work the sensitivity of Bloch Surface Waves to laser-induced anisotropy azo-polymeric thin layers is expe rimentally shown . The nanoscale reshaping films via thermal-Scanning Probe Lithography allows couple light circular photonic nanocavities, tailoring on-demand resonant BSW confined within nanocavity.