Abstract A high‐quality perovskite photoactive layer plays a crucial role in determining the device performance. An additive engineering strategy is introduced by utilizing different concentrations of N,1‐diiodoformamidine (DIFA) precursor solution to essentially achieve monolayer‐like films with enhanced crystallinity, hydrophobic property, smooth surface, and grain size up nearly 3 µm, leading significantly reduced boundaries, trap densities, thus diminished hysteresis resultant solar...

Organic molecules at the gas-particle interface of atmospheric aerosols influence heterogeneous chemistry aerosol and impact climate properties. The ability to probe particle surface in situ therefore is important but has been proven challenging. We report first successful observations laboratory-generated suspended air using surface-sensitive technique second harmonic light scattering (SHS). As a demonstration, we detect trans-4-[4-(dibutylamino)styryl]-1-methylpyridinium iodide determine...

Photoactivated reactions of organic species in atmospheric aerosol particles are a potentially significant source secondary material (SOA). Despite recent progress, the dominant chemical mechanisms and rates these remain largely unknown. In this work, we characterize photophysical properties photochemical reaction imidazole-2-carboxaldehyde (IC) aqueous solution, alone presence isoprene. IC has been shown previously laboratory studies to participate photoactivated chemistry aerosols, it is...

We give instructions for the construction and operation of a simple apparatus performing optically detected magnetic resonance measurements on diamond samples containing high concentrations nitrogen-vacancy (NV) centers. Each NV center has spin degree freedom that can be manipulated monitored by combination visible microwave radiation. observe Zeeman shifts in presence small external fields describe method to measure field strengths with spatial resolution several microns. The activities...

One-pot green synthesis of highly fluorescent carbon dots (CDs) was developed by hydrothermal treatments ovalbumin (OVA) from hen eggs. The treatment time, temperature, OVA concentration and pH value as the effective factors on light emissions CDs were optimized. optical structural characteristics confirmed with UV, FL, FTIR, Raman, XPS, XRD, HRTEM AFM. quantum yield up to 34.5%, small in size (2.51 nm) an excellent water solubility. also exhibited salt stability, suggesting that they can be...

Unprecedented data manipulation employed using a pH-stimuli responsive hydrogel was developed to achieve reversible encryption–decryption.

Abstract Highly selective formation of benzophenone (99.1%) from diphenylmethane is reported for the first time using H2O2 (30%) as an oxidant and Co/MCM-41 catalyst.

In order to break the limitation that gap is fixed once it was synthesized for traditional flexible surface-enhanced Raman scattering substrate, in this work, a laser-induced reduction method used fabricate ordered silver nanodot arrays on substrates. By using rhodamine 6G as probe molecule, characterization carried out hydrogel film/silver substrate at expanded and shrunken states. The shows great reproducibility, average relative standard deviation of 8.7%. addition, when film shrunk by...

We demonstrate bidirectional SPR tuning-based coloration with gold nanoparticles by wavelength-switched photoredox reactions.

Recent demonstrations of metasurfaces present their great potential to implement flat and multifunctional optical elements, which are accomplished with the designs planar optics micro-/nano- fabrications. Integrating in three dimensions has manifested drastically increasing advantages manipulating light fields by extending design freedom. However, fabricating dimensional remain a tough challenge due lack stereo printing protocols. Herein, we demonstrate laser nanoprinting floated silver...

Fiber optic sensors are often used as acoustic to detect sound waves because of their apparent advantages, such anti-electromagnetic interference and strong adaptation the environment. The transverse vibration mode fiber caused by wave can be obtained, principle optical sensor signal was explored using a simple model. It is found that effectively cause change in birefringence only when number azimuthal modes 2, detected sensor. found, analyzing detection mechanism, spectral width...

Fluid Antenna System (FAS) is recognized as a promising technology for enhancing communication performance. In this context, we explored the potential of FAS-assisted wireless powered systems. Specifically, transmitter, equipped with FAS, harvests radio frequency (RF) signal from power beacon and utilizes harvested energy data transmission to receiver. To evaluate performance considered systems, derive both analytical asymptotic expressions outage probability. Simulation results indicate...

With the rapid development of urban rail transit, higher requirements have been put forward for real-time and reliability wireless train command dispatch communication. Most existing mobile radios adopt a single core processor scheme, making it difficult system to complete specified functions in event local faults, which prolongs fault handling time. Therefore, applying redundant technology control module has extremely important practical significance. By using method dual CPU redundancy...

In this paper, a novel dual-band antenna with coupled line and different impedance extension lines is presented analyzed. This simple composed of three radiations symmetric lines, it occupies compact space 80 × 30 1m m 3 . The achieved 10-dB bandwidths the operation in free-space condition are 200 MHz 100 MHz, respectively, which support 1.8/2.6 GHz Long Term Evolution (LTE) operating bands. Furthermore, various parameters investigated to examine effects on return loss as well gain proposed antenna.

The deposition of needle-shaped cuprous oxide (Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O) particles (20~50 nm) on chitosan nanoparticles were made by anodic oxidation copper electrode in alkaline solution, Fe <sup xmlns:xlink="http://www.w3.org/1999/xlink">2+</sup> was immobilized with chelating. Chitosan-Fe /Cu O used as an Fenton reagent activated visible light at biocompatible pH values(pH≈7-8) the degradation brilliant red...

Cuprous oxide(Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O)/rectorite nanocomposites were prepared through polyol method by using cupric acetate complex as precursor of Cu, aiming to utilize the iron species in clay material and hydrogen peroxide derived from Cu O form a novel immobilized Fenton system. The obtained characterized X-ray diffraction, Scanning electron microscopy Photoelectron Spectroscopy analysis. results...

A Nafion membrane, used as a solid polymer electrolyte, was transplanted in zero gap cell to investigate the feasibility of hybrid technology RuO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -TiO deposition combined with application an external electric field. The results showed that technique membrane had apparent additive effect on suppressing recombination photo generated charge carriers and photocatalytic oxidation methylene blue....