We demonstrate high-performance polymer solar cells using the plasmonic effect of multipositional silica-coated silver nanoparticles. The location nanoparticles is critical for increasing light absorption and scattering via enhanced electric field distribution. device incorporating between hole transport layer active achieves a power conversion efficiency 8.92% with an external quantum 81.5%. These efficiencies are highest values reported to date metal

A novel architecture consisting of Si nanowires internally grown from porous graphite is synthesized by etching with a lamellar structure via VLS (vapor–liquid–solid) process. This strategy gives the high electrode density 1.5 g/cm3, which comparable practical anode Li-ion battery. Our product demonstrates volumetric capacity 1363 mAh/cm3 91% Coulombic efficiency and rate capability 568 even at 5C rate. good electrochemical performance allows to offer free space accommodate volume change...

End-group cross-linkable sulfonated poly(arylene ether) polymer (E-SFQK) was synthesized via direct polymerization of potassium 2,5-dihydroxybenzenesulfonate (SHQ) and decafluorobiphenyl (DFBP), followed by a reaction with ethynylphenol (EP). The cross-linking the ethynyl end group E-SFQK performed at 250 °C. After cross-linking, proton conductivity, water uptake, swelling ratio cross-linked membrane decreased from 0.16 (noncross-linked membrane) to 0.13 S/cm, 86% 42%, 31% 13%, respectively....

We demonstrate a simple route for preparing Si/SiO(x) urchin-like structures in which core-shell nanocoils protruded out from the surface of bulk Si, via high-temperature annealing Pt-decorated Si powders. The carbon-coated anodes with micro- and nanostructured composite exhibit significantly improved electrochemical performance high specific capacity 1600 mAh/g superior cycling 70 cycles at rate 0.2 C due to nanocoil conformation SiO(x) buffer layer. More importantly, results enhanced...

Coking is a major cause of performance degradation Ni-based anodes in solid oxide fuel cells (SOFCs) powered by carbon-containing fuels. While modification Ni surfaces using thin coating BaO, BaZr0.9Y0.1O3–d (BZY), and BaZr0.1Ce0.7Y0.1Yb0.1O3–d (BZCYYb) was reported to alleviate the problem, mechanism yet be understood. In this study, situ Raman spectroscopy surface enhanced (SERS) are used probe chemistry BZY, BZCYYb. Analyses time-resolved spectral features C–C bonds, −OH groups, −CO3...

We demonstrate a simple method for the fabrication of rough silicon surfaces with micro- and nanostructures, which exhibited superhydrophobic behaviors. Hierarchically were prepared by copper (Cu)-assisted chemical etching process where Cu nanoparticles having particle size 10-30 nm deposited on surface, depending period time electroless plating. Surface roughness was controlled both conditions. As-synthesized showed water contact angles ranging from 93° to 149°. Moreover, hierarchically...

We present a simple, mass production of nonporous and nanoporous silicon nanowire anodes by combining block copolymer masks metal catalytic etching. Carbon coated exhibit highly stable cycling performance with reversible charge capacity 1500 mA h g−1.

In situ probing of surface species and incipient phases is vital to unraveling the mechanisms chemical energy transformation processes. Here we report Ag nanoparticles coated with a thin-film SiO2 shell that demonstrate excellent thermal robustness stability for enhanced Raman spectroscopy (SERS) study solid oxide fuel cell materials under in conditions (at ∼400 °C).

Surface-enhanced Raman scattering (SERS) is ideally suited for probing and mapping surface species incipient phases on fuel cell electrodes because of its high sensitivity surface-selectivity, potentially offering insights into the mechanisms chemical energy transformation processes. In particular, bimetal nanostructures coinage metals (Au, Ag, Cu) have attracted much attention as SERS-active agents due to their distinctive electromagnetic field enhancements originated from plasmon...

New series of ethynyl-terminated sulfonated-fluorinated poly(arylene ether)s (ESF-6Fs) were synthesized via nucleophilic aromatic substitution reaction (SNAr) from potassium 2,5-dihydroxybenzenesulfonate (SHQ), 4,4′-(hexafluoroisopropylidene)diphenol (6FBPA), and decafluorobiphenyl (DFBP), followed by the with 3-ethynylphenol. The cross-linked ESF-6F membranes exhibited high glass-transition temperatures in range 258−276 °C good thermal degradation 308−328 °C. To optimize proton conductivity...

Carbon nanofibers decorated with various metal oxide nanoparticles were fabricated by combining an electrospinning technique of bicomponent polymer mixture and a sol-gel reaction subsequent carbonization process. Electrospun consisting polyacrylonitrile (PAN) poly(vinyl pyrrolidone) (PVP) controllable diameters PAN/PVP core/shell types via phase-separation due to the immiscibility between two polymers. The electrospun served as supporting materials binding sites PVP incorporate titanium...

Objective:The purpose of this study was to investigate whether selective cyclooxygenase (COX) inhibitors promote paclitaxelinduced apoptosis in taxane-resistant ovarian cancer cells by suppressing MDR1/P-glycoprotein (P-gp) expression.Methods: Taxane-resistant were cultured with paclitaxel alone or combined a COX inhibitors.The expression patterns MDR1/P-gp and the ability inhibit growth measured.The efficacy prostaglandin E 2 (PGE ) supplementation measured evaluate mechanisms involved MDR1...

We demonstrate a facile fabrication of rich variety silicon patterns with different length scales by combining polymer lithography and metal-assisted chemical etching method. Several types were fabricated on substrates, silver layers deposited the patterned surfaces used to etch beneath. Various including topographic lines, concentric rings, square arrays created at micro- nanoscale after subsequent removal masks. Alternatively, sub-30 nm nanowires produced wafer which was covered highly...

We fabricated nanopatterns with Au nanoparticles-embedded micelles (Au-micelles) by self-assembly of block copolymers via nanoimprint lithography. The micelle structure prepared self-assembled was used as a template for the synthesis nanoparticles (Au NPs). NPs were synthesized in situ inside polystyrene-block-poly(2-vinylpyridine) (PS- b-P2VP). Au-micelles arranged on trenches polymer template, which imprinted fabrication line-type and dot-type carried out combined method. In addition,...

We successfully synthesized two different structures, silica nanospheres and porous polymer membranes, via nanophase separation, based on a sol-gel process. Silica sol, which was in situ polymerized from tetraorthosilicate, used as precursor. Subsequently, it mixed with that matrix component. It observed separation occurred after the mixing of sol subsequent evaporation solvents, resulting organizing various random network structures to spheres. In particular, were produced by manipulating...

This study demonstrates that the structure of cadmium hydroxides (Cd(OH)(2)) precipitated from a basic nitrate solution can be finely controlled by adjusting pH precursor solution. The synthesis process involves only pouring saturated into pure water to quench and total is finished within 30 s. At shallow quenching, unstable nanoparticles turned microparticles via ripening process. Cd(OH)(2) was in form one-dimensional nanowires then two-dimensional plates as quenching increased. large...

We present a new technique to fabricate highly ordered silicon pin-in-a-hole structure, in which each nanowire is pinned hole, by combining polymer sphere arrays induced Rayleigh instability with chemical etching process. With this process, we were able create the novel structures that are periodic over very large areas (3 × 3 cm2), where length of nanowires can be varied tuning time. A structure was used as template for preparing nanotubes. And also these exhibited superior anti-reflection...

Dry-process is a sustainable and favorable fabrication approach for all-solid-state batteries by eliminating solvents. The feasibility of dry-process has previously been demonstrated, but pragmatic design, especially thin solid-state electrolyte separator layer, not established. Here we report new to dry-processing SSE layer with minimal risk mechanical failure. By roll-pressing cathode layers together (i.e., co-rolling), uniform (50 µm) high loading active material ratio (5 mAh cm − 2 ,...

To determine the relationship between pretreatment serum squamous cell carcinoma (SCC) antigen and Cyfra 21-1 levels, survival in patients with invasive of cervix.One hundred one cervical were included. Pre-treatment levels SCC measured, a 5 year minimum follow up. Thirty two recurrent disease (RD) compared to 99 non-recurrent (NRD) respect tumor markers, FIGO stage, lesion size, lymph node status, parametrial involvement.Pre-treatment significantly higher RD group (p<0.001). Combined showed...

To date, lithium-ion batteries still represent the most promising electrical energy storage option for many emerging technologies; instance, electrification of transportation hinges on availability with significantly improved and power density, extended lifetime, reduced cost. In particular, positive electrode materials used in contribute more than any other component to overall cell cost limit total density a given mass because their substantially lower specific capacities compared negative...

An approach for electrospinning interconnected (“welded”) carbon fiber mats improved electronic conduction in 3D porous positive electrode current collectors lithium ion batteries is presented. Although individual fibers have high axial conductivity, when used as and other electrochemical storage/conversion systems, their conductivity largely limited by the interconnectivity of fibers. Active materials low can block loaded onto Interconnectivity commercial paper (CFP) (d ≈ 10μm) achieved...