Abstract We propose a vortex beam generator based on nanometer spiral slit and explore the propagation rule of topological charge. Compared to common methods generation with fixed charge, optical generated by proposed has charge varying distance. The value can be modulated geometric Theoretical analysis predicts variation in near field, numerical simulations experimental measurement verify scheme. Discussion shape structure is also presented. This work provides theoretical foundation for...

Abstract Chiral sulfones are of great importance in medicinal chemistry and chemical synthesis. Efficient methods for preparing enantiomerically enriched sulfone‐containing molecules can therefore be significant value; such methods, however, uncommon. Herein, we report the first general palladium‐catalyzed sulfonylation vinyl cyclic carbonates with sodium sulfinates. A series tertiary allylic were synthesized good yields excellent enantiomeric ratios. Both aliphatic‐ aryl‐substituted...

A large family of two-dimensional (2D) transition metal carbides, MXene, has demonstrated potential applications for electrochemical energy storage. 2D MXene sheets may buffer volume changes and form a 3D conductive network to facilitate the electronic transfer working electrodes. However, multilayer Ti3C2T x material could only deliver moderate capacity in sodium ion battery cells, below requirement commercial applications. Herein, we decorated (Ti3C2T ) with Sb nanoparticles (NPs) via...

Abstract Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room-temperature phosphorescence (RTP) aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu3+-complex nanoparticles (Eu-NPs) self-assembly-induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared previous RTP AIE materials, the SAIL phenomena increased intensity...

Blind deblurring has attracted much interest with its wide applications in reality. The blind problem is usually solved by estimating the intermediate kernel and image alternatively, which will finally converge to blurring of observed image. Numerous works have been proposed obtain images fewer undesirable artifacts designing delicate regularization on latent solution. However, these methods still fail while dealing containing saturations large blurs. To address this problem, we propose an...

Abstract In the present paper, we study well-posedness of solution to initial boundary value problem for damped Kirchhoff-type wave equation with fractional Laplacian. First, existence and uniqueness local are established by Banach fixed point theorem. Then, global finite time blowup derived at subcritical critical energy levels. Finally, upper bound lower estimate given arbitrarily positive level.

Copper oxides composited with TiO₂ in hollow nanocages exhibit improved electrochemical performance as anode materials for lithium-ion batteries.

Despite its strong anti-tumor activity against human cancers, paclitaxel (Taxol®) suffers limited clinical applications due to the low aqueous solubility and lack of appropriate delivery vehicles. In an attempt develop alternative formulation suitable for parenteral administration, paclitaxel-loaded lipid nanospheres were constructed as colloidal carrier system controlled drug delivery. Alpha-tocopheryl succinate (α-TOS), a semi-synthetic vitamin E analog, was employed new physiological...

A deep learning model is established to predict the photovoltaic performance of sensitizers in dye-sensitized solar cells.

Abstract Osteosarcoma is a malignant condition affecting adolescents and children more than adults. Nanobiomedicine has opened up several avenues which have increased therapeutic efficiencies the conventional treatment for same. In current study, novel organic nanoparticle was devised conjugated with bisphosphonate zoledronic acid an affinity bone tissues. Moreover, loaded multiple anti-cancer drugs like gemcitabine epirubicin. The nanoparticles were characterized by microscopic analysis,...

A general and efficient method via catalysis by readily available Pd(0)/DACH-naphthyl catalyst under mild conditions, unlocks a new platform that permits the synthesis of elusive quaternary N 2 -allylic tetrazoles, even in context late-stage functionalization.

In this paper, we study blow up and time of solutions for initial boundary value problem Kirchhoff-type wave equations involving the fractional Laplacian \begin{document}$\left\{ \begin{align} & {{u}_{tt}}+[u]_{s}^{2(\theta -1)}{{(-\Delta )}^{s}}u=f(u),\ \ \text{in}\ \Omega \times {{\mathbb{R}}^{+}}, \\ u(x,0)={{u}_{0}},\ {{u}_{t}}(x,0)={{u}_{1}},\ , u=0,\ ({{\mathbb{R}}^{N}}\backslash )\times \mathbb{R}_{0}^{+}, \end{align} \right.$\end{document} where $ [u]_s is Gagliardo seminorm u $,...

The development of green, economical and sustainable chemical processes is one the primary challenges in organic synthesis. Herein, we report an efficient heterogeneous palladium-catalyzed sulfonylation vinyl cyclic carbonates with sodium sulfinates via decarboxylative cross-coupling. Both aliphatic aromatic sulfinate salts react various to deliver desired allylic sulfones featuring tri- even tetrasubstituted olefin scaffolds high yields excellent selectivity. process needs only 2 mol%...

Nanofibrous polymeric materials, combined with protein therapeutics, play a significant role in biomedical and pharmaceutical applications. However, the upload of proteins into nanofibers high yield controlled release has been challenging issue. Here, we report situ loading model (bovine serum albumin) hydrophilic poly(vinyl alcohol) via ice-templating, 100% drug efficiency. These protein-loaded were further coated by polydopamine order to improve nanofiber stability achieve release. The...

Blurry kernel estimation is a critical yet challenging task for blind deblurring. Most existing works devote to designing end-to-end networks that require large amount of hard-to-obtain training data. In addition, these methods often ignore the intrinsic effects blur this work, we present unified latent image deblur and method based on MAP framework. By revisiting coarse-to-fine strategy, introduce self-supervised multi-scale network(MD-Net), where structure significantly reduce deviation...

Abstract Chiral sulfones are of great importance in medicinal chemistry and chemical synthesis. Efficient methods for preparing enantiomerically enriched sulfone‐containing molecules can therefore be significant value; such methods, however, uncommon. Herein, we report the first general palladium‐catalyzed sulfonylation vinyl cyclic carbonates with sodium sulfinates. A series tertiary allylic were synthesized good yields excellent enantiomeric ratios. Both aliphatic‐ aryl‐substituted...