Abstract We present an infrared perfect absorber model composed of gold nanobars and a photonic microcavity. The inevitable losses in metamaterials are taken as advantage for high absorbance efficiency. By adjusting the structural geometry, device can be used refractive index sensing. In our calculation with spacer thickness H = 90 nm it yield more than 99% near-infrared frequency region. full-width at half-maximum realized up to extremely narrow value 40.8 figure merit obtained 357. For...

Most infrared and visible image fusion algorithms demonstrate satisfactory performance under normal lighting conditions, but often perform poorly in low-light environments because the texture details images are barely dark. To resolve this issue, we have proposed A novel network based on enhancement progressive aware for – (EPAFusion). The EPAFusion efficiently brightens while fusing complementary information from two modalities. Specifically, design a degraded illumination disentangled...

Doppler shift estimation continues to be a critical challenge of utmost significance in both theoretical research and practical engineering applications. Many innovators have crafted solutions specific this issue, with notable contributions across various signals scenarios. Given that cyclostationary are prevalent artificial natural phenomena, we propose novel framework based on the phased fractional lower-order moment (PFLOM) for estimating mixed signals. During process, more realistic...

Diarylmethanes are significant molecules in organic synthesis and play a vital role pharmaceutical development. In this context, we successfully developed visible-light-driven nickel-catalyzed cross-coupling of readily available benzyltrimethylammonium triflates with aryl bromides, enabling the direct various diarylmethane products without need for metal-reducing agents. Mechanistic studies have revealed that benzyl radicals, generated through photocatalysis, may serve as key intermediates,...

The exploitation of effective strategies to develop materials bearing deep tissue focal fluorescence imaging capacity and excellent reactive oxygen species (ROS) generation ability is great interest address the high-priority demand photodynamic therapy (PDT). Therefore, we use a rational strategy fabricate two-photon-active metal–organic framework via click reaction (PCN-58-Ps). Moreover, PCN-58-Ps capped with hyaluronic acid through coordination obtain cancer cell-specific targeting...

Based on complementary fractal geometry structures, we design a novel infrared quasi-three-dimensional (3D) nanocavity with localized enhanced field multiband resonant frequencies. The fractals offer the nanostructure two important characteristics, functionality and subwavelength effect. electric field, power flow, intensity distributions are given to indicate internal mechanism of in nanocavity. Additionally, effective medium method is established retrieve permittivity impedance structure....

The construction of novel classes photosensitizers for efficient reactive oxygen species (ROS) generation is great interest, yet it a challenge. In this work, bis(terpyridine)zinc(II) complex (namely, ZnL1) with two-photon absorption activity as an ROS photogenerator was synthesized. Benefiting from the coordinated Zn, decreased singlet–triplet energy gap favors intersystem crossing process facilitating singlet (1O2) via transfer. addition, makes superoxide radical (O2·–) easier. This...

Utilizing the controlled self-assembling of a giant surfactant, bottom-up method for constructing line gratings with sub-10 nm resolution has been developed. Via simple solvent vapor annealing procedure, surfactant comprised an oligomeric silsesquioxane (DPOSS) and polystyrene (PS) tail (i.e., DPOSS-PS) precisely self-assembled into perpendicularly oriented lamellae structures. A follow-up thermal further significantly promotes long-range ordering, giving rise to highly defect-free patterns...

In this study, an all-dielectric metamaterial absorber consisting of a ring nanocavity array, spacer layer, and metallic substrate is designed investigated. The simulation results show that the two perfect absorption peaks (99.91% 99.96%) are achieved at 539 nm 673 nm. resonance modes caused by different electric magnetic field distributions structure lead to sensing properties. addition, influence structural parameters, such as width nanocavity, on characteristics was studied presented...

A solar absorber based on tungsten with an ultra-wide wavelength band is investigated numerically using the finite-difference time–domain method. The designed structure consists of a cross-shaped resonator top and metal thin film bottom that are separated by intermediate dielectric layer. demonstrates continuous high absorptivity (>90%) over 514–1945 nm range, average ranges up to 92.36% within 200–2000 range. excitation propagating surface plasmon resonance (SPR) localized SPR in...

Abstract It is a multi-criteria decision issue to conduct risk assessment of the tunnel. In this paper, tunnel collapse model based on improved theory quantification III and fuzzy comprehensive evaluation method proposed. According geological conditions construction disturbance classification method, factors are selected, level divided into 5 levels according principle maximum membership degree. The three groups scores with largest correlation ratio calculated by form X, Y, Z axes spatial...

In this paper, a terahertz (THz) polarization device that achieves four conversion modes with high relative bandwidth and performance by varying the phase transition properties of vanadium dioxide (VO 2 ) is investigated. particular, when behaves as an orthogonal linear converter, it has ratio greater than 0.9, operating 2.14 THz, 99.5%. addition, relationship between different converter can be analyzed Jones matrix. The proposed VO -based switchable THz important potential for applications...

ZnL1@MOF-199@FA can respond to the microenvironment of cancer cells, realizing chemodynamic therapy (CDT) and enhanced two-photon-induced photodynamic (PDT).

Multiple parameters need to be monitored analyze the kinetics of biological progresses. Surface plasmon polariton resonance sensors offer a non-invasive approach continuously detect local change refractive index molecules with high sensitivity. However, fabrication miniaturized, compact, and low-cost is still challenging. In this paper, we propose demonstrate grating-coupled SPR sensor platform featuring dual mode operation for simultaneous sensing pressure index, which can fabricated using...