Metal-mesh-integrated lateral nanowire array solar cells for ultra-thin photovoltaic antennas.

An integrated photovoltaic antenna based on a lateral nanowire array solar cell and metal mesh is proposed and studied by three-dimensional electromagnetic simulation. The results show that the integration of the metal meshed antenna significantly enhances the absorption of the nanowire array due to the diffraction effects of the two-dimensional grating and the excitation of localized surface plasmons. By optimizing the nanowire diameter, antenna linewidth, and gap between them, the integrated solar cell achieves a maximum conversion efficiency of 11.

Inverse-designed multi-diameter InAs nanowire array ultra-broadband photodetectors enhanced by localized surface plasmon resonances.

Multi-diameter InAs nanowire array ultra-broadband photodetectors are inversely designed and further enhanced by localized surface plasmon resonances. The nanowire diameters are carefully selected by the particle swarm optimization algorithm within the range of 100-800 nm. The multi-diameter nanowire array exhibits high absorption over 80% within a broadband wavelength range of 0.

Inverse-Designed Ultra-Compact Passive Phase Shifters for High-Performance Beam Steering.

Ultra-compact passive phase shifters are inversely designed by the multi-objective particle swarm optimization algorithm. The wavelength-dependent phase difference between two output beams originates from the different distances of the input light passing through the 4 μm × 3.2 μm rectangular waveguide with random-distributed air-hole arrays.

Graphene-Based Tunable Polarization Conversion Metasurface for Array Antenna Radar Cross-Section Reduction.

A graphene-based tunable polarization conversion metasurface (PCM) was designed and analyzed for the purpose of reducing the radar cross-section (RCS) of array antennas. The metasurface comprises periodic shuttle-shaped metal patches, square-patterned graphene, and inclined grating-patterned graphene. By adjusting the Fermi energy levels of the upper () and lower () graphene layers, different states were achieved.

SNR Enhancement for Comparator-Based Ultra-Low-Sampling Φ-OTDR System Using Compressed Sensing.

The large amount of sampled data in coherent phase-sensitive optical time-domain reflectometry (Φ-OTDR) brings heavy data transmission, processing, and storage burdens. By using the comparator combined with undersampling, we achieve simultaneous reduction of sampling rate and sampling resolution in hardware, thus greatly decreasing the sampled data volume. But this way will inevitably cause the deterioration of detection signal-to-noise ratio (SNR) due to the quantization noise's dramatic increase.

Topological photonic crystal nanowire array laser with bulk states.

A topological photonic crystal InGaAsP/InP core-shell nanowire array laser with bulk states operating in the 1550 nm band is proposed and simulated. By optimizing the structure parameters, high Q factor of 1.2 × 10 and side-mode suppression ratio of 13.

Ultrasensitive enhanced fabrication-tolerance refractometer based on PANDA-air-hole microfiber at the birefringent dispersion turning point.

We present an ultrasensitive enhanced fabrication-tolerance refractometer utilizing the polarimetric interference of a tapered PANDA-air-hole fiber (PAHF). To obtain high birefringence and unique group birefringence, the PAHF is specially designed by introducing double air holes into the cladding. Ultrahigh sensitivity can be achieved by reducing the group birefringence difference to zero, defined as birefringent dispersion turning point (BDTP).

[An experimental study of simvastatin-collagen composite sponge as a direct pulp capping material in rat molars].

Objective: To assess the feasibility and efficacy of simvastatin-collagen composite sponge as a novel, direct pulp capping material.

Methods: A total of 120 Sprague-Dawley rats were randomly divided into three groups: the simvastatin-collagen composite sponge group (SIM group), the collagen sponge group (CS group), and the Ca(OH)2 group (CH group). An endodontic entry cavity was prepared on the occlusion of the first molar on the left maxillary of each rat.

The biological effects of rainbow trout (Oncorhynchus mykiss) recombinant interleukin-8.

In this report, recombinant interleukin-8 (rIL-8) was produced and its activity tested for the first time in fish. The rainbow trout rIL-8 was produced in Escherichia coli and purified using a 6xHis tag at the N-terminus. The rIL-8 induced a dose-dependent migration of head kidney leukocytes at concentrations from 0.