Cell adhesion-mediated piezoelectric stimulation provides a noninvasive method for in situ electrical regulation of cell behavior, offering new opportunities the design smart materials tissue engineering and bioelectronic medicines. In particular, surface potential is mainly dominated by inherent piezoelectricity biomaterial dynamic adhesion state cells. The development an efficient optimized material interface would have important implications regulation. Herein, we modified poled...

Biomimetic piezoelectric scaffolds provide a noninvasive method for in vivo cell regulation and tissue regeneration. Herein, considering the gradually varied properties of native cartilage bone tissues, we fabricated biomimetic electrospun poly(L-lactic acid) (PLLA) nanofibrous mats with gradient to induce integrated osteochondral differentiation rat mesenchymal stem cells (MSCs). Nanofibrous are polarized under electric fields linear variation strength generate piezoelectricity,...

The rapid and sensitive identification of bacteria has long been a major challenge in quality control, environmental monitoring food safety.

The segmental dynamics of rigid, intermediate, and mobile molecular components in carboxyl terminated polybutadiene (CTPB)/organo–clay (C18–clay) systems was characterized by fully refocused 1H NMR FID. In addition, DQ experiments allowed semiquantitative monitoring changes near the interface. Both methods suggest a critical concentration 60 wt % CTPB, indicating saturation effect for surface-adsorbed polymer. While value polymer/clay system can be measured several ways, this is its first...

Cancer chemotherapy remains challenging to pass through various biological and pathological barriers such as blood circulation, tumor infiltration cellular uptake before the intracellular release of antineoplastic agents.

Tactile sensors are indispensable to wearable electronics, but still lack self-powering, high resolution, and flexibility. Herein, we present direct-written piezoelectric poly(vinylidene difluoride) fibers that orthogonally assembled into nanofibrous grids (NFGs) as self-powered tactile sensors. Five strips (NFSs) written on a polyurethane film via uniform-field electrospinning (UFES) process, two films 5 × NFGs with 25 pixels. Benefited from the mechanical flexibility helical architecture...

A novel series of Indy-N-heterocyclic carbene ligands (Indy = indazolin-s-ylidene) have been developed and investigated. Via a mild Ag transfer route, these new reacted with rhodium, palladium, gold salts to yield the corresponding air-stable metal complexes. The product complexes were characterized by NMR spectroscopic methods X-ray diffraction analysis. electronic properties modified introduction different substituents at coordinated NHC ligands. Catalytic complex evaluated in hydration...

Abstract The size and morphology of nanofibers directly determine their application scope performance, while regular patterned fibers further demonstrate superior performance in the field sensors biomaterials. Melt electrospinning enables controlled deposition is currently one most important means preparing fibers. However, due to existence high-voltage electric field, melt has safety problems such as partial discharge breakdown, coupled with charge rejection on fiber surface, which...

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The spatial arrangement of cardiac myocytes (CMs) and other non-myocytes scaffolds, closely resembling native tissue, is essential to control the CM morphology function for tissue regeneration. In current study, micropatterned fibrous scaffolds were developed establish a co-culture system with fibroblasts (CFs) endothelial cells (ECs) as potential in vitro drug screening model. To pursue biomimetic approach influence behaviors, strip, oval wave-patterned mats constructed by deposition...

ZK61 magnesium-alloy plate with high tensile strength and elongation is obtained by combined multipass symmetric hot rolling asymmetric warm rolling. Deformation history considering varying strain rate from the macro-finite element analysis of selected passes are introduced into viscoplastic self-consistent model (VPSC) as initial boundary conditions for macro- multiscale micro-multiscale coupling analysis. VPSC simulation results show that in stage deformation, basal <a> slip dominated...

Electrospinning is becoming an efficient method to produce fibers in the submicron range, but bending instability of conventional electrospinning system (CES) brings limitations distinctive deposition electrospun fibers. Herein, we proposed a strategy update through establishment uniform electric field, realizing 3D printing with well-controlled, low-cost, and template-free manners. The field (UFES) apparatus configured by inserting nozzle into center aided metal plate. simulation UFES...

Under the background of global “carbon neutrality” goal, it is great significance to study environmental effect FDI in rapid economic development. This paper proposes an original framework determine relative influence five factors on Belt and Road countries with a strong FDI-CO2 association. Based panel smooth transition regression (PSTR) model, we establish country-specific time-specific coefficients for 59 during 2003–2018. These are assumed change smoothly as function threshold variables,...

The adjustment of industrial structure is an important engine driving the economic growth. relationship between evolution and growth characterized by various stages. article uses data 31 provincial units in China from 1978 to 2016 as a sample, divided into five stages with time nodes, takes rationalization optimization (OIS) indicators measure structure. main research conclusions are obtained through cointegration test, Granger test simultaneous equation model. Results indicate that OIS...

Abstract BACKGROUND The emission of NO x can causes serious environmental pollution and endangers human health. In recent years, the selective catalytic reduction with NH 3 (NH ‐SCR) technology has been widely studied adopted to reduce production emissions during many technologies. RESULTS A series Mn–Ce–Co /Ti–C,N catalysts were prepared by impregnation method, low‐temperature –SCR was studied. results show that support modification (Ti–C,N) broaden operation temperature window catalyst (NO...