Coherent beam combining of 107 beams has been demonstrated for the first time to best our knowledge. When system was in closed loop, pattern far-field stable and fringe contrast <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mo form="prefix">&gt;</mml:mo> <mml:mn>96</mml:mn> <mml:mi>%</mml:mi> </mml:mrow> </mml:math> . The impact dynamic tilt error, piston power inconsistency theoretically analyzed. Meanwhile, distribution law error...

Two-dimensional (2D) materials with superior properties exhibit tremendous potential in developing next-generation electronic and optoelectronic devices. Integrating various functions into one device is highly expected as that endows 2D great promise for more Moore more-than-Moore applications. Here, we construct a WSe2/Ta2NiSe5 heterostructure by stacking the p-type WSe2 n-type narrow gap Ta2NiSe5 aim to achieve multifunction device. Owing large interface barrier, reveals prominent diode...

A high nickel grade ferronickel was produced from laterite ore using the selective reduction-wet magnetic separation process, with addition of sodium sulfate (Na2SO4). The concentrate assaying 9.87% Ni, a recovery 90.90% can be obtained, when reduced at 1200 °C for 50 min 10 wt.% Na2SO4 and 2 coal. Based on results X-ray Diffraction, Scanning Electron Microscopy, Energy Dispersive Spectroscopy analyses, thermal decomposition reduction reaction were carried out. Sodium oxide reacted silicate...

The adsorption mechanism of Cr6+ on biochar prepared from corn stalks (raw carbon) was studied by extracting the organic components (OC) and inorganic (IC). Scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, photoelectron spectroscopy were used to characterize properties three kinds carbon. Kinetic thermodynamic experiments performed. results showed that experimental data fitted well Freundlich model pseudo-second-order kinetic model, adsorptions carbon...

We report herein a novel pyrene-based two-dimensional supramolecular organic framework (SOF) in water via host–guest interactions, which exhibits regulation of ROS and high photocatalytic efficiency.

The adsorption mechanisms of mercury ion (Hg2+) by different fractions biochar were studied, providing a theoretical basis and practical value for the use to remediate contamination in water. Biochar (RC) was prepared using corn straw as raw material. It then fractionated, resulting inorganic carbon (IC), organic (OC), hydroxyl-blocked (BHC), carboxyl-blocked (BCC). Before after Hg2+ adsorption, characterized several techniques, such energy-dispersive X-ray spectroscopy (EDS),...

Bismuth chalcohalides (BiSeI and BiSI), a class of superior light absorbers, have recently garnered great attention owing to their promise in constructing next-generation optoelectronic devices. However, date, the photodetection application bismuth is still limited due challenge controllable preparation. Herein, synthesis large-scale quasi-1D BiSeI nanowires via chemical vapor deposition growth reported. By precisely tuning temperature Se supply, it can effectively control thermodynamics...

Abstract Poly(vinyl alcohol) (PVA)/sodium alginate (SA) blend hydrogels have immense potential for use as functional biomaterials. Understanding of influences processing parameters and compositions on mechanical swelling properties PVA/SA is very important. In this work, with different SA contents were prepared by applying freeze–thaw method first to induce physical crosslinking PVA chains then followed Ca 2+ form interpenetrating networks SA. The effects number cycles, content concentration...

When the pupil filters are used to improve performance of imaging system, conversion efficiency is a critical characteristic for real applications. Here, in order take full advantage subwavelength focusing property radially polarized higher-order Laguerre-Gaussian (LG) beam, we introduce multi-zone binary phase into system deal with problem that focal spot split along z axis small size parameter incident LG beam. We provide an easy-to-perform procedure design filters, where zone numbers π...

In this paper, we propose and experimentally investigate a linearly polarized narrow-linewidth random fiber laser (RFL) operating at 1080 nm boost the output power to kilowatt level with near-diffraction-limited beam quality using master oscillation amplifier. The RFL based on half-opened cavity, which is composed of Bragg grating 500 m piece polarization-maintained Ge-doped fiber, generates 0.71 W seed an 88 pm full width half-maximum (FWHM) linewidth 22.5 dB polarization extinction ratio...

Violet phosphorus (VP), a newly emerging elemental 2D semiconductor, with attractive properties such as tunable bandgap, high carrier mobility, and unusual structural anisotropy, offers significant opportunities for designing high-performance electronic optoelectronic devices. However, the study on fundamental property device application of VP is seriously hindered by its inherent instability in ambient air. Here, VP/MoS2 van der Waals heterostructure constructed vertically staking few-layer...

A passively Q-switched nanosecond Tm-doped fiber laser at 1957 nm wavelength was demonstrated using a graphene-based saturable absorber. The absorber fabricated with graphene grown by chemical vapor deposition and transferred onto high-reflection mirror. Stable pulses were observed the shortest pulse width of 760 ns, repetition rate 202 kHz maximum average output power 96 mW. Our experimental results suggest that is suitable for Q-switcher near 2 μm wavelength.

The rapid and sensitive detection of pepsin plays an important role in clinical medical practice. A label-free micro-tapered long-period fiber grating (MTLPFG) sensor that functionalized by graphene oxide (GO) was proposed for detection. MTLPFG fabricated with CO2 laser heating tapered to form a series periods, the GO activated oxygen groups EDC/NHS deposited onto surface. On account large specific surface area containing GO, biomolecules can be adsorbed on through amide π-π stacking....

The sensitive and accurate detection of ochratoxin A (OTA) is crucial for public health due to its high toxicity. Herein, using Au nanoparticle (NP)-attached CdS/UiO-66-NH2 heterostructures as photoactive materials, a photoelectrochemical (PEC) aptasensor was presented the ultrasensitive assay OTA based on competitive displacement reaction triggering trans-cleavage ability CRISPR/Cas12a. In this sensing strategy, methylene blue-labeled single-stranded DNA (MB-ssDNA) immobilized...

Unlike conventional continuous-wave lasers with wide spectra, the amplification of single-frequency in optical fibers is much more difficult owing to ultra-high power spectral density induced nonlinear stimulated Brillouin scattering effect. Nevertheless, over past two decades effort has been devoted improving scaling and performance high-power fiber amplifiers. These amplifiers are mostly driven by applications, such as high precision detection metrology, have benefited from long coherence...