Here we report the preparation of a novel multifunctional core−shell nanocomposite material that contains nonporous dye-doped silica core and mesoporous shell containing photosensitizer molecules, hematoporphyrin (HP). This architecture allows simultaneous fluorescence imaging photosensitization treatment. The molecules are covalently linked to exhibit excellent photo-oxidation efficiency. efficiency hybrid nanoparticles was demonstrated be significantly improved over in homogeneous...

In this paper, we have developed a biofriendly and high sensitive apo-GOx (inactive form of glucose oxidase)-modified gold nanoprobe for quantitative analysis imaging consumption in living cells. This detection system is based on fluorescence resonance energy transfer between modified AuNPs (Au nanoparticles) dextran-FITC (dextran labeled with fluorescein isothiocyanate). Once present, quenched FITC recovers due to the higher affinity over dextran. The shows excellent selectivity toward...

The first application of microchip electrophoresis with laser-induced fluorescence (MCE-LIF) detection to simultaneously determine glutathione (GSH) and hydrogen peroxide (H2O2) in mitochondria was described. Organoselenium probe Rh-Se-2 bis(p-methylbenzenesulfonate)dichlorofluorescein (FS) synthesized our laboratory were utilized as fluorescent probes for GSH H2O2, respectively. Rh-Se-2, which is nonfluorescent, reacts produce rhodamine 110 (Rh110) high quantum yield. Similarly,...

Abstract A comprehensive manipulation of the Jones matrix phase channels is crucial for enhancing information capacity and security metasurface. However, a single‐layer planar metasurface, without incorporation chirality, can only achieve maximum three independent single under either linear or circular polarization bases. Here, an effective strategy proposed that utilizes dual matrices in different bases with monoatomic thus extending number to six. To encode six holographic images into...

Polarization state of a wave field can be manipulated through the plasmonic metasurface consisting orthogonal nanoslit pairs; output polarization angle is independent incident linearly polarized light and highly dependent on orientations pairs. We combine Archimedes spiral with pairs to compensate for Pancharatnam-Berry (PB) phase induced by orientation nanoslits, as well achieve radially vector beam (RPVB) under illuminations different lights. Experiments are performed successfully realize...

A functional metasurface of both transparent medium slices and multiple deflection prisms is proposed, where phase retardations for generating non-diffracting vortex lattices are integrated encoded as rotation angles nano-apertures. Under plane-wave illumination, the transmitted waves from thin flat act analogously beams, each with a designed propagating direction pre-scribed shift, that generate an optical lattice within their overlapping region space. By altering design parameters...

Vector beams contain complex polarization structures and they are inherently non-separable in the spatial degrees of freedom. The spatially variant polarizations vector have enabled many important applications a variety fields ranging from classical to quantum physics. In this study, we designed realized setup based on Mach-Zehnder interferometer for achieving at arbitrary points higher-order Poincaré sphere, through manipulating two eigenstates system with combined spiral phase plate. We...

The manipulation of high-quality vector beams (VBs) with metasurfaces is an important topic and has potential for classical quantum applications. In this paper, we propose a Fresnel zone (FZ) metasurface metallic nanoslits arranged on FZs, which sets alternate binary geometric propagation phases to cancel the incident spin component focus converted (CSC). rotation designs transform polarization state conventional Poincaré sphere VBs higher-order (HOP) sphere. two orbital angular momentum...

We use the spiral multi-pinhole plate to generate ultrashort vortex pulses and study their spatiotemporal evolutions involving intensity, phase, orbital angular momentum, energy current. In experiment, a Mach-Zehnder-type interferometer is employed perform investigation of vortices. Combining experimental results theoretical analyses, we discuss in femtosecond regime. The show that distribution momentum cross-section pulse maintained almost invariable duration, while both intensity current...

Vector vortices with spatially varying polarization are interesting phenomena and have motivated many recent studies. A vector vortex in the wavefield of a surface plasmon polariton (SPP) may be extended to sub-wavelength scale, which would more significant. However, formation requires state possess components parallel metal films. In this study, we generated radially polarized plasmonic using metasurface spiral orthogonal nanoslit pairs. We theoretically derived x y component expressions...

Metasurfaces can be used to manipulate light at the subwavelength scale, and miniaturized photonic devices designed generate lattices, which are important for exploring phenomena in novel fields of physics such as topology. Analogous multi-beam interference, plasmonic metasurfaces composed nano-slit pairs on truncated spiral segments were fabricated realize lattice wave a resolution. The interference analogous beams was controlled by combining geometric dynamic phases, lattices different...

A unique assembly approach was developed to fabricate conjugated polymer and photosensitizer-doped mesoporous silica nanoparticles with effective Förster resonance energy transfer (FRET) from poly[(9,9-di(3,30-N,N0-trimethylammonium)-propylfluorenyl-2,7-diyl)-alt-co-(1,4-phenylene)] (PFP) porphyrin-based photosensitizers (PSs). PFP form a complex through electrostatic interactions, efficient PSs occurs upon irradiation. This is stable, effective, diversified. PS-doped showed three- four-fold...

Abstract The NH 2 ‐terminated mesogenic group 4‐(6‐amine‐hexyloxy)‐4*‐cyan‐biphenyl is chemically grafted onto the carboxylic groups of graphene oxide (GO) through an amidation reaction. resultant mesogenic‐group‐modified GO sheets (GO‐LC) are redispersed easily in common organic solvents, facilitating structure characterization and device fabrication by solution processing. Broad‐band reflectors obtained doping different contents GO‐LC nanosheets into chiral nematic liquid crystalline...

Wavefield manipulation of surface plasmon polaritons (SPPs) is one the fundamental subjects in nanophtonics. In this paper, based on analyses plasmonic and photonic modes L-shaped slit samples with different widths, dependence wavevector, amplitude phase scattered wavefields width are experimentally determined. The excited mode wavelets by arbitrary element analyzed theoretically. Au ring-slits widths also experimented as general structure to show polarized patterns originated from...

Metasurfaces with orthogonal nano-slit pairs arranged on spirals are proposed to generate vector beams (VBs) of Bell-like states and slanted polarizations. The design the metasurfaces is based theoretically derived parameter condition for manipulation two vortex modes, which satisfied by matching three parameters rotation order <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>m</mml:mi> </mml:math> , spiral <mml:mi>n</mml:mi> incident polarization helicity...

Focused higher-order Poincaré (HOP) beams are of particular interest because they facilitate understanding the exotic properties structured light and their applications in classical physics quantum information. However, generating focused HOP using metasurfaces is challenging. In this study, we proposed a metasurface design comprising two sets metal nanoslits for coaxially beams. The were interleaved on equispaced alternating rings. initial rings started at adjacent Fresnel zones to provide...

The spaser (a plasmonic nanolaser) has rapidly advanced as a subwavelength light source candidate. Herein, we introduce based on quantum-dot, mesoporous-oxide, and metal structure from top to bottom consisting of CdS/ZnS core/shell quantum dots, mesoporous silica film (MSF), an Au film, respectively. Two-photon pumping using femtosecond laser pulses at 800 nm creates amplified spontaneous emission approximately 451 nm. advantages MSF dielectric gap layer are examined through numerical...

Clustered speckle, optical lattices, and their vortex array are subjects of interest in wave manipulation. In this study, disordered lattices arrays with different unit structures were found the clustered speckles generated by a circularly-distributed multi-pinhole scattering screen when it was illuminated coherent light. These included hexagonal kagome honeycomb lattices. Moreover, asymmetric units modulation phases non-integer multiples 2π discussed. Theoretical analysis numerical...

Imaging spectrometers can provide imagery and spectrum information of objects form so-called three-dimensional spectral imagery, two spatial one dimension. Most imaging use conventional spectroscopic elements or systems, such as reflective diffraction gratings, prisms, filters, modulated interferometers, so on. Here a special spectrometer which is based on novel cemented Prism-Grating-Prism (PGP) reported. Its element PGP consists prisms holographic transmission volume grating, between these...

The trefoil and cinquefoil vector field are of essential significance for fundamental topology properties as the Hopf link knots in light field. spatially multiplexing metasurfaces were designed with two sets periodical nanoslits arranged alternately, each had independent geometric spiral phases metalens to produce focus vortex corresponding circular polarized (CP) light. By arranging orientations slit sets, CP vortices desired topological charges obtained, superposition realized generate...

Artificial nanostructures in metasurfaces induce strong spin-orbit interactions (SOIs), by which incident circularly polarized light can be transformed into two opposite spin components. The component with an helicity to the acquires a geometric phase and is used realize versatile functions of metasurfaces; however, other component, identical helicity, often neglected as diffused background. Here, simultaneously manipulating components originating from SOI plasmonic metasurfaces, independent...

We report an experimental study of a new vortex state in clustered speckles generated by modulating the scattering waves with spiral multi-pinhole plate. This can be termed twin-vortex two spatially neighboring singularities nested common core. In our experiment, plate N pinholes arranged along curve introduces phase variation integer multiple 2π into waves. With different modulations, scattered from random surfaces modulated to produce various forms twin-vortices speckles. Based on data, we...

Abstract Determination of orbital angular momentum (OAM) states is a subject crucial importance for their applications in areas ranging from classical physics to quantum information. Here, we propose the antiphase semicircular slit pair (ASSP) as novel approach determine topological charge OAM states. The ASSP contains two slits with diameter increment and symmetrically arranged upper lower circle. It converts an incident state into light field bright spots, which relative shift twice spot...