Examples in the detection of heavy metal ions based on surface-enhanced Raman scattering spectroscopy
Heavy metals have been widely applied in industry, agriculture, and other fields because of their outstanding physics and chemistry properties. However, heavy metal pollution is inevitable in the process of mass production and emission. Heavy metal ions will …
Scalable and effective multi-level entangled photon states: a promising tool to boost quantum technologies
Multi-level (qudit) entangled photon states are a key resource for both fundamental physics and advanced applied science, as they can significantly boost the capabilities of novel technologies such as quantum communications, cryptography, sensing, metrology, …
Observation of intensity flattened phase shifting enabled by unidirectional guided resonance
Phase-only light modulation is an important functionality for many optoelectronic applications. Although modulation efficiency can be significantly improved by using optical resonances, resonance detuning is always accompanied with dramatic intensity …
Plasmonic nanocrystals on polycarbonate substrates for direct and label-free biodetection of Interleukin-6 in bioengineered 3D skeletal muscles
The development of nanostructured plasmonic biosensors has been widely widespread in the last years, motivated by the potential benefits they can offer in integration, miniaturization, multiplexing opportunities, and enhanced performance label-free …
Experimental demonstration of cylindrical vector spatiotemporal optical vortex
We experimentally generate cylindrically polarized wavepackets with transverse orbital angular momentum, demonstrating the coexistence of spatiotemporal optical vortex with spatial polarization singularity. The results in this paper extend the study of …
Establishing exhaustive metasurface robustness against fabrication uncertainties through deep learning
Photonic engineered materials have benefitted in recent years from exciting developments in computational electromagnetics and inverse-design tools. However, a commonly encountered issue is that highly performant and structurally complex functional materials …
Investigation of dipole emission near a dielectric metasurface using a dual-tip scanning near-field optical microscope
A wide variety of near-field optical phenomena are described by the interaction of dipole radiation with a nanophotonic system. The electromagnetic field due to the dipole excitation is associated with the Green’s function. It is of great interest to …
Multi-class, multi-functional design of photonic topological insulators by rational symmetry-indicators engineering
An explicit topology optimization-based design paradigm is proposed for the design of photonic topological crystalline insulators (TCIs). To strictly guarantee the topological property, rational engineering of symmetry-indicators is carried out by …
Inverse design of organic light-emitting diode structure based on deep neural networks
The optical properties of thin-film light emitting diodes (LEDs) are strongly dependent on their structures due to light interference inside the devices. However, the complexity of the design space grows exponentially with the number of design parameters, …
A wavelength and polarization selective photon sieve for holographic applications
Optical metasurfaces are perfect candidates for the phase and amplitude modulation of light, featuring an excellent basis for holographic applications. In this work, we present a dual amplitude holographic scheme based on the photon sieve principle, which is …
Direct-access mode-division multiplexing switch for scalable on-chip multi-mode networks
Toward spectrometerless instant Raman identification with tailored metasurfaces-powered guided-mode resonances (GMR) filters
Raman identification is an instrumental tool with a broad range of applications, yet current spectroscopy approaches fall short in facilitating practical and scalable Raman identification platforms. In this work, we introduce a spectrometerless Raman …
Long-range qubit entanglement via rolled-up zero-index waveguide
Preservation of an entangled state in a quantum system is one of the major goals in quantum technological applications. However, entanglement can be quickly lost into dissipation when the effective interaction among the qubits becomes smaller compared to the …
Pump-controlled RGB single-mode polymer lasers based on a hybrid 2D–3D ?-cavity for temperature sensing
Single mode lasers, particularly red-green-blue (RGB) colors, have attracted wide attention due to their potential applications in the photonic field. Here, we realize the RGB single mode lasing in a hybrid two-dimension and three-dimension (2D–3D) hybrid …
Unidirectional emission of phase-controlled second harmonic generation from a plasmonic nanoantenna
Shaping the emission pattern of second harmonic (SH) generation from plasmonic nanoparticles is important for practical applications in nonlinear nanophotonics but is rendered challenging by the complex second-order nonlinear-optical processes. Here, we …
Self-assembled multifunctional nanostructures for surface passivation and photon management in silicon photovoltaics
This work reports the fabrication and characterization of multifunctional, nanostructured passivation layers formed using a self-assembly process that provide both surface passivation and improved light trapping in crystalline silicon photovoltaic (PV) cells. …
Stoichiometric modulation on optical nonlinearity of 2D MoS x Se2?x alloys for photonic applications
The composition-engineered band structures of two-dimensional (2D) ternary transition-metal dichalcogenides (TMDCs) semiconductor alloys directly dominate their electronic and optical properties. Herein, in this paper, a detailed theoretical and experimental …
High-detectivity tin disulfide nanowire photodetectors with manipulation of localized ferroelectric polarization field
Tin sulfide semiconductor nanowires (NWs) have been widely investigated for photodetection applications because of their good optical and electrical properties. Herein, we synthesized n-type SnS2 NWs and then fabricated SnS2 NW photodetectors with a …