344 citations · 2.1k across the 28 of their papers we have counts for
29 papers
Engineering THz-frequency light generation, detection and manipulation through graphene
Miriam S. Vitiello, Leonardo Viti
Graphene has been one of the most investigated materials in the last decade. Its unique optoelectronic properties have indeed raised it to an ideal and revolutionary candidate for…
Broadband, Flexible, Skin-Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications
Nouha Loudhaief, Petr Rozhin, Ilaria Bertuol +17
The development of wearable photodetectors demands a unique combination of broadband optical sensitivity, mechanical flexibility, and skin-compatibility, with these requirements ra…
Roadmap for Photonics with 2D Materials
F. Javier García de Abajo, D. N. Basov, Frank H. L. Koppens +145
Triggered by the development of exfoliation and the identification of a wide range of extraordinary physical properties in self-standing films consisting of one or few atomic layer…
Terahertz photodetection in scalable single-layer-graphene and hexagonal boron nitride heterostructures
M. Asgari, L. Viti, O. Balci +12
The unique optoelectronic properties of single layer graphene (SLG) are ideal for the development of photonic devices across a broad range of frequencies, from X-rays to microwaves…
Lattice dynamics and elastic properties of black phosphorus
Eva A. A. Pogna, Alexeï Bosak, Alexandra Chumakova +4
We experimentally determine the lattice dynamics of black phosphorus layered crystals through a combination of x-ray diffuse scattering and inelastic x-ray scattering, and we ratio…
Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
Leonardo Viti, Miriam Serena Vitiello
The discovery of graphene and its fascinating capabilities have triggered an unprecedented interest in inorganic two-dimensional (2D) materials. Van der Waals (vdW) layered materia…
Quantum-dot single-electron transistor as thermoelectric quantum detectors at terahertz frequencies
Mahdi Asgari, Dominique Coquillat, Guido Menichetti +6
Low dimensional nano-systems are promising candidates for manipulating, controlling and capturing photons with large sensitivities and low-noise. If quantum engineered to tailor th…
Chip-scale terahertz frequency combs through integrated intersubband polariton bleaching
Francesco P. Mezzapesa, Leonardo Viti, Lianhe Li +5
Quantum cascade lasers (QCLs) represent a fascinating accomplishment of quantum engineering and enable the direct generation of terahertz (THz) frequency radiation from an electric…
Homogeneous quantum cascade lasers operating as Terahertz frequency combs over their entire operational regime
Alessandra Di Gaspare, Leonardo Viti, Harvey E. Beere +2
We report a homogeneous quantum cascade laser (QCL) emitting at Terahertz (THz) frequencies, with a total spectral emission of about 0.6 THz centered around 3.3 THz, a current dens…
Unveiling the detection dynamics of semiconductor nanowire photodetectors by terahertz near-field nanoscopy
Eva A. A. Pogna, Mahdi Asgari, Valentina Zannier +3
Semiconductor nanowire field-effect transistors represent a promising platform for the development of room-temperature (RT) terahertz (THz) frequency light detectors due to the str…
Thermoelectric graphene photodetectors with sub-nanosecond response times at Terahertz frequencies
Leonardo Viti, Alisson R. Cadore, Xinxin Yang +7
Ultrafast and sensitive (noise equivalent power <1 nWHz-1/2) light-detection in the Terahertz (THz) frequency range (0.1-10 THz) and at room-temperature is key for applications suc…
HBN-encapsulated, graphene-based room-temperature terahertz receivers with high speed and low noise
Leonardo Viti, David G. Purdie, Antonio Lombardo +2
Uncooled Terahertz (THz) photodetectors (PDs) showing fast (ps) response and high sensitivity (noise equivalent power (NEP) < ) over a broad (0.5THz-10THz) frequency r…
Fast and Sensitive Terahertz Detection Using an Antenna-Integrated Graphene pn Junction
Sebastián Castilla, Bernat Terrés, Marta Autore +11
Although the detection of light at terahertz (THz) frequencies is important for a large range of applications, current detectors typically have several disadvantages in terms of se…
Optoelectronic devices, plasmonics and photonics with topological insulators
Antonio Politano, Leonardo Viti, Miriam S. Vitiello
Topological insulators are innovative materials with semiconducting bulk together with surface states forming a Dirac cone, which ensure metallic conduction in the surface plane. T…
Phase-sensitive terahertz imaging using room-temperature near-field nanodetectors
Maria C. Giordano, Leonardo Viti, Oleg Mitrofanov +1
Imaging applications in the terahertz (THz) frequency range are severely restricted by diffraction. Near-field scanning probe microscopy is commonly employed to enable mapping of t…
Black phosphorus nanodevices at terahertz frequencies: photodetectors and future challenges
Leonardo Viti, Antonio Politano, Miriam Serena Vitiello
The discovery of graphene triggered a rapid rise of unexplored two-dimensional materials and heterostructures having optoelectronic and photonics properties that can be tailored on…
Near-field terahertz probes with room-temperature nanodetectors for subwavelength resolution imaging
Oleg Mitrofanov, Leonardo Viti, Enrico Dardanis +5
Near-field imaging with terahertz (THz) waves is emerging as a powerful technique for fundamental research in photonics and across physical and life sciences. Spatial resolution be…
Thermoelectric terahertz photodetectors based on selenium-doped black phosphorus flakes
Leonardo Viti, Antonio Politano, Kai Zhang +1
Chemical doping of bulk black phosphorus is a well-recognized way to reduce surface oxidation and degradation. Here, we report on the fabrication of terahertz frequency detectors c…
Heterostructured hBN-BP-hBN Nanodetectors at THz Frequencies
Leonardo Viti, Jin Hu, Dominique Coquillat +4
Artificial semiconductor heterostructures played a pivotal role in modern electronic and photonic technologies, providing a highly effective mean for the manipulation and control o…
Black-Phosphorus Terahertz Photodetectors
Leonardo Viti, Jin Hu, Dominique Coquillat +4
The discovery of graphene and the related fascinating capabilities have triggered an unprecedented interest in inorganic two-dimensional (2D) materials. Despite the impressive impa…
The role of surface chemical reactivity in the stability of electronic nanodevices based on two-dimensional materials "beyond graphene" and topological insulators
A. Politano, M. S. Vitiello, L. Viti +2
Here, we examine the influence of surface chemical reactivity toward ambient gases on the performance of nanodevices based on two-dimensional materials "beyond graphene" and novel…
Plasmonics with two-dimensional semiconductors "beyond graphene": from basic research to technological applications
Amit Agarwal, Miriam S. Vitiello, Leonardo Viti +2
In this minireview, we explore the main features and the prospect of plasmonics with two-dimensional semiconductors. Plasmonic modes in each class of van der Waals semiconductors h…
Terahertz detection of magnetic field-driven topological phase transition in HgTe-based transistors
A. Kadykov, F. Teppe, C. Consejo +12
We report on Terahertz detection by inverted band structure HgTe-based Field Effect Transistor up to room temperature. At low temperature, we show that nonlinearities of the transi…
Photonic Devices Based On Black-Phosphorus and Combined Hybrid 2D nanomaterials
Leonardo Viti, Miriam S. Vitiello
Artificial semiconductor heterostructures played a pivotal role in modern electronic and photonic technologies, providing a highly effective mean for the manipulation and control o…