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View article: Graphene Phase Modulators Operating in the Transparency Regime
Graphene Phase Modulators Operating in the Transparency Regime Open
Next-generation data networks need to support Tb/s rates. In-phase and quadrature (IQ) modulation combine phase and intensity information to increase the density of encoded data, reduce overall power consumption by minimizing the number of…
View article: Graphene‐Perovskite Fibre Photodetectors
Graphene‐Perovskite Fibre Photodetectors Open
The integration of optoelectronic devices, such as transistors and photodetectors (PDs), into wearables and textiles is of great interest for applications such as healthcare and physiological monitoring. These require flexible/wearable sys…
View article: Monolayer WS<sub>2</sub> electro- and photo-luminescence enhancement by TFSI treatment
Monolayer WS<sub>2</sub> electro- and photo-luminescence enhancement by TFSI treatment Open
Layered material heterostructures (LMHs) can be used to fabricate electroluminescent devices operating in the visible spectral region. A major advantage of LMH-based light emitting diodes (LEDs) is that electroluminescence (EL) emission ca…
View article: Germanium Fabry-Perot nanoresonators investigated by cathodoluminescence spectroscopy
Germanium Fabry-Perot nanoresonators investigated by cathodoluminescence spectroscopy Open
We report on the experimental investigation, by means of spatially-resolved cathodoluminescence spectroscopy, of rectangular all-dielectric Ge nanoantennas sustaining Fabry-Perot resonances. The combination of spatial and spectral resoluti…
View article: Graphene phase modulators operating in the transparency regime
Graphene phase modulators operating in the transparency regime Open
Next-generation data networks need to support Tb/s rates. In-phase and quadrature (IQ) modulation combine phase and intensity information to increase the density of encoded data, reduce overall power consumption by minimising the number of…
View article: Graphene-perovskite fibre photodetectors
Graphene-perovskite fibre photodetectors Open
The integration of optoelectronic devices, such as transistors and photodetectors (PDs), into wearables and textiles is of great interest for applications such as healthcare and physiological monitoring. These require flexible/wearable sys…
View article: Monolayer WS$_2$ electro- and photo-luminescence enhancement by TFSI treatment
Monolayer WS$_2$ electro- and photo-luminescence enhancement by TFSI treatment Open
Layered material heterostructures (LMHs) can be used to fabricate electroluminescent devices operating in the visible spectral region. A major advantage of LMH-light emitting diodes (LEDs) is that electroluminescence (EL) emission can be t…
View article: Graphene-black phosphorus printed photodetectors
Graphene-black phosphorus printed photodetectors Open
Layered materials (LMs) produced by liquid phase exfoliation (LPE) can be used as building blocks for optoelectronic applications. However, when compared with mechanically exfoliated flakes, or films prepared by chemical vapor deposition (…
View article: Moiré Modulation of Van Der Waals Potential in Twisted Hexagonal Boron Nitride
Moiré Modulation of Van Der Waals Potential in Twisted Hexagonal Boron Nitride Open
When a twist angle is applied between two layered materials (LMs), the registry of the layers and the associated change in their functional properties are spatially modulated, and a moiré superlattice arises. Several works explored the opt…
View article: Electrically Tunable Nonequilibrium Optical Response of Graphene
Electrically Tunable Nonequilibrium Optical Response of Graphene Open
The ability to tune the optical response of a material via electrostatic gating is crucial for optoelectronic applications, such as electro-optic modulators, saturable absorbers, optical limiters, photodetectors, and transparent electrodes…
View article: Chip-Scalable, Room-Temperature, Zero-Bias, Graphene-Based Terahertz Detectors with Nanosecond Response Time
Chip-Scalable, Room-Temperature, Zero-Bias, Graphene-Based Terahertz Detectors with Nanosecond Response Time Open
The scalable synthesis and transfer of large-area graphene underpins the development of nanoscale photonic devices ideal for new applications in a variety of fields, ranging from biotechnology, to wearable sensors for healthcare and motion…
View article: Electrically tuneable nonequilibrium optical response of graphene
Electrically tuneable nonequilibrium optical response of graphene Open
The ability to tune the optical response of a material via electrostatic gating is crucial for optoelectronic applications, such as electro-optic modulators, saturable absorbers, optical limiters, photodetectors and transparent electrodes.…
View article: Tunable broadband light emission from graphene
Tunable broadband light emission from graphene Open
Graphene is an ideal material for integrated nonlinear optics thanks to its strong light-matter interaction and large nonlinear optical susceptibility. It has been used in optical modulators, saturable absorbers, nonlinear frequency conver…
View article: Dielectric Nanoantennas for Strain Engineering in Atomically Thin Two-Dimensional Semiconductors
Dielectric Nanoantennas for Strain Engineering in Atomically Thin Two-Dimensional Semiconductors Open
Atomically thin two-dimensional semiconducting transition metal\ndichalcogenides (TMDs) can withstand large levels of strain before their\nirreversible damage occurs. This unique property offers a promising route for\ncontrol of the optica…
View article: Negative Refraction in Time-Varying Strongly Coupled Plasmonic-Antenna–Epsilon-Near-Zero Systems
Negative Refraction in Time-Varying Strongly Coupled Plasmonic-Antenna–Epsilon-Near-Zero Systems Open
Time-varying metasurfaces are emerging as a powerful instrument for the dynamical control of the electromagnetic properties of a propagating wave. Here we demonstrate an efficient time-varying metasurface based on plasmonic nano-antennas s…
View article: Negative refraction in time-varying, strongly-coupled plasmonic antenna-ENZ system
Negative refraction in time-varying, strongly-coupled plasmonic antenna-ENZ system Open
Time-varying metasurfaces are emerging as a powerful instrument for the dynamical control of the electromagnetic properties of a propagating wave. Here we demonstrate an efficient time-varying metasurface based on plasmonic nano-antennas s…
View article: Nanoscale Design of the Local Density of Optical States
Nanoscale Design of the Local Density of Optical States Open
We propose a design concept for tailoring the local density of optical states (LDOS) in dielectric nanostructures, based on the phase distribution of the scattered optical fields induced by point-like emitters. First we demonstrate that th…
View article: Energy–Momentum Cathodoluminescence Spectroscopy of Dielectric Nanostructures
Energy–Momentum Cathodoluminescence Spectroscopy of Dielectric Nanostructures Open
Precise knowledge of the local density of optical states (LDOS) is fundamental to understanding nanophotonic systems and devices. Complete LDOS mapping requires resolution in energy, momentum, and space, and hence a versatile measurement a…
View article: data_article_Energy-momentum_cathodoluminescence_spectroscopy_of_dielectric_nanostructures
data_article_Energy-momentum_cathodoluminescence_spectroscopy_of_dielectric_nanostructures Open
data from article "Energy-momentum cathodoluminescence spectroscopy of dielectric nanostructures", ACS Photonics, 2017
View article: Tip-enhanced Raman spectroscopy: principles and applications
Tip-enhanced Raman spectroscopy: principles and applications Open
This review provides a detailed overview of the state of the art in tip-enhanced Raman spectroscopy (TERS) and focuses on its applications at the horizon including those in materials science, chemical science and biological science. The ca…
View article: Probing individual point defects in graphene via near-field Raman scattering
Probing individual point defects in graphene via near-field Raman scattering Open
We demonstrate the capability of tip-enhanced Raman spectroscopy to probe individual point defects in graphene.