Sub-stoichiometric WO3-x has provided an alternative platform to investigate oxygen vacancies in gas sensors based on metal-oxides. We present experimental study the influence of sub-stoichiometric phase upon sensing performance. High-quality nanostructures with several x values (WO3, W19O55, W5O14, W18O49) were synthesized and used fabricate H2S sensors. Temperature programmed desorption (O2-TPD) shows that absorption behaviors as-prepared are affected by vacancies, which played a critical...

Nano-silicon composites, Si/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and Si/C, were prepared by an in situ chemical polymerization of 3,4-ethylenedioxythiophene (EDOT) with nano-Si particles a PSS aqueous solution subsequent carbonization Si/PEDOT:PSS, respectively. The embedded shapeless PEDOT:PSS matrix amorphous carbon the corresponding composite. Energy dispersive spectroscopy (EDS) X-ray photoelectron (XPS) measurements revealed that 2.66 wt% element sulfur...

Abstract A simulated interconnect/contact/cathode/cathode support test cell is fabricated to investigate the effectiveness of high‐entropy alloy as contact material on microstructure and performance converted spinel‐based layer. Although CuMnNiFeCo powder selected precursor, it showed good sinterability after sintering at 900°C for 2 h in air. The electrical layer evaluated by area‐specific resistance measurement, including isothermal exposure thermal cycling. compatibility with adjacent...

Abstract Functional hierarchy is prevalent in biological systems owing to natural evolution. Efforts replicate these structures artificial materials have gained traction science. Although hierarchical are fabricated at different scales based on site‐specific interactions using ABC‐type block copolymers (BCPs), the fabrication of such AB‐type BCPs via a simple and efficient method remains challenging. Herein, class amphiphilic (PDen m ‐ b ‐PAChol n ) reported comprising dendronized...

Desired bone repair biomaterial must have good biocompatibility and suitable mechanical properties that are equivalent to those of human bones. In this study, multi-walled carbon nanotubes (MWCNTS) was designed incorporate into bioactive glass/poly(etheretherketone) fabricate a composite nanotubes/bioactive (MWCNTS/BG/PEEK) through compounding injection-molding process. The microstructures, properties, thermal stability bioactivity the ternary biocomposite, as well preliminary cell responses...

A reversible solid oxide cell (RSOC) integrating fuel (SOFC) and a electrolysis (SOEC) usually utilizes compressive seals. In this work, the vermiculite seals of various thickness load during thermal cycles long-term operation were investigated. The leakage rates gradually increased with increasing input gas pressure. thinner had good sealing performance. was carried out at seals, possible holes squeezed, finally lower. With fixed pressure 1 psi, 2 3 0.50 mm remained around 0.009 sccm/cm,...

Desired bone repair material must have excellent biocompatibility and high bioactivity. Moreover, mechanical properties of biomaterial should be equivalent to those human bones. For developing an alternative biocomposite for load-bearing orthopedic application, combination bioactive fillers with polymer matrix is a feasible approach. In this study, series multi-walled carbon nanotubes (MWCNTs)/poly(etheretherketone) (PEEK) nanocomposites were prepared by novel coprecipitation-compounding...

Opportunistic forwarding assisted by mobile relays is an effective way of improving network capacity and packet delivery ratio in delay tolerant networks (DTNs). However, such performance gain comes at the price increased energy consumption due to duplicated transmissions relays. In this paper, we investigate how harvesting, a promising technique enabling sustainable communications, can be exploited improve opportunistic DTNs. Specifically, formulate problem using Markov Decision Process...

Mobile-relay-assisted forwarding in delay-tolerant networks (DTNs) can improve network capacity and packet delivery ratio but, at the same time, may significantly increase energy consumption system level. In this paper, we propose a distance-based energy-efficient opportunistic (DEEOF) framework for broadcast transmission mobile DTNs. DEEOF strikes balance between performance by maximizing efficiency while maintaining high ratio. proposed algorithms, define metric of equivalent distance...

Abstract Novel functions and advanced structure, where each single component could not be produced individually, can exhibit from the collective synergistic behavior of systems. This synergetic strategy has been successfully demonstrated for co‐assembly polymer–polymer to construct hierarchical nanomaterials. However, differences in natures polymer small molecules impose challenges construction sophisticated co‐assemblies with geometrical compositional control. Herein, a self‐assembly is...

Abstract The widespread presence of hierarchical asymmetric structures in nature has sparked considerable interest because their unique functionalities. These ingenious across multiple scales often emerge from the transfer and amplification asymmetry chiral molecules under various synergistic effects. However, constructing artificial structures, particularly developing multicomponent analogous to those formed through non‐covalent interactions, still presents tremendous challenges. Herein, we...

To find anti-inflammatory compounds from the tuberous roots of Dioscorea batatas, we isolated 6-hydroxy-2,4,7-trimethoxyphenanthrene (batatasin I) dichloromethane (CH(2)Cl(2)) fraction this plant. Batatasin I inhibited both generation prostaglandin D(2) (PGD(2)), leukotriene C(4) (LTC(4)) and degranulation reaction in mouse bone marrow-derived mast cells (BMMCs). This compound cyclooxygenase-2 (COX-2) dependent PGD(2) a dose manner, with IC(50) values 1.78 µM. Western blotting probed...

Poly(etheretherketone) exhibits good biocompatibility, excellent mechanical properties, and bone-like stiffness. However, the natural bio-inertness of pure poly(etheretherketone) hinders its applications in biomedical field, especially when direct bone-implant osteo-integration is desired. For developing an alternative biomaterial for load-bearing orthopedic application, combination bioactive fillers with matrix a feasible approach. In this study, multi-walled carbon nanotubes/calcium...

Abstract Fractal theory, with its novel architectures inspired by nature, provides some concepts for smart reactor design. Here, researches on the applications of fractal theory to micro-reactor design are reviewed, in term high surface area-to-volume ratio, rapid and direct numbering-up, safety, precise control. In addition, two designs introduced as typical examples. First, H-type structure is considered context a double-plate micro-reactor, which used photocatalytic reactions CO 2 ....