Materials Literature
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We demonstrate the optical switching of transistor properties by adopting the photoisomerization of spiropyran (SP) molecules dispersed in a poly(triarylamine) (PTAA) channel layer. The drain current (IDS) was reduced by ultra-violet (UV) light irradiation, while visible (VIS) light irradiation restored the IDS to its…
Ultrathin Rh nanosheets with a thickness of approximately 1 nm were prepared via a simple solvothermal route with the assistance of formaldehyde, and they possessed good catalytic activity in CO oxidation.
Versatile binding features of ortho-dihydroxyphenyl groups ubiquitously found in mussel adhesive proteins are inducible with polyphenolic moieties that are widespread in the plant kingdom, strongly supporting the idea that previously reported mussel-related material-independent adhesion is reproducible with plant-deri…
Here we report a controllable method based on electrodeposition to fabricate Ag nanodendrites (NDs) on a microwell patterned electrode. The microwell patterns on the ITO electrode are fabricated via the microcontact printing technique. By varying the microwell size and electrodeposition time, the morphology of metal d…
Co3O4 hollow spheres with two-level hierarchical pores and high surface area are synthesized, and the shell thickness and the mesoporous structure are well-tuned through pre-treatment of the carbon spheres with alkali/acid. Evaluation of the Co3O4 hollow spheres for the combustion of CH4 reveals that they exhibit exce…
Y2O2S and Gd2O2S phosphor lattices activated with a range of Tb(3+) concentrations have been successfully prepared as nanoparticles and their emission properties have been characterized using SEM, XRPD, photoluminescence spectroscopy and cathodoluminescence. (5)D3-(5)D4 cross relaxation processes between Tb(3+) cation…
Novel polymeric microspheres with a hierarchical porous structure are facilely fabricated using double Pickering emulsion templates. This unique hierarchical porous structure makes them excellent candidates for adsorption and catalyst scaffold materials.
The microstructural evolution of Ni - Yttria-Stabilized Zirconia (YSZ) anode functional layers in anode-supported solid oxide fuel cells was studied after aging in humidified hydrogen at temperatures from 900–1100°C and times up to 500 h. The relatively large (∼6000 μm 3 ) three-dimensional transmission X-ray microsco…
Possible reaction paths for CO oxidation on ceria-supported Au nanoparticle catalysts were modeled by placing a Au nanorod on a CeO2(110) surface. The results are discussed against experimental and computational data in the literature for Au/CeO2 with emphasis on the role of the ceria surface termination and involveme…
The defect-induced lattice expansion (chemical expansion), and corresponding relaxation patterns around oxygen vacancies, were examined as a function of host cation radius for HfO2, ZrO2, CeO2, UO2, ThO2, and Bi2O3 fluorite-structured oxides. Analysis of data from the literature, combined with new molecular dynamics s…
Here we report the synthesis of well dispersed gold nanoparticles (Au NPs), with diameters ranging between 5 and 60 nm, in water and demonstrate their potential usefulness in catalysis and biological applications. Functionalised polyethylene glycol-based thiol polymers (mPEG-SH) were used to stabilise the pre-synthesi…
A smart supercapacitor was fabricated by loading a thermosensitive polymer P(NIPAM-co-SPMA) onto the surface of NiAl-layered double hydroxide (LDH) nanowalls grown on a flexible Ni foil substrate, which displays temperature-triggered on-off ion channels for controlling the electrochemical behavior.
The creep behavior and microstructures of extruded Mg97Zn1Gd2 alloys with long period stacking ordered (LPSO) phase have been investigated. Creep properties of extruded alloys depend on pre-extrusion aging temperature; the optimum aging temperature to obtain excellent creep resistance is between 623 and 723 K. In this…
We have explored a novel photochemical route to synthesize fluorinated graphene via simultaneously fluorinating and reducing graphene oxide (GO) in HF solution at room temperature. This method avoids special equipment, employs simple UV irradiation and utilizes readily available GO as the carbon source.
The use of natural fibers as reinforcement in polymer composites has been a focus of interest. However, these composites exhibit lower mechanical properties than those of pure polymers because of the low interfacial interactions between the hydrophobic polymer matrix and the hydrophilic fiber. To overcome this problem…
The ferroelectric and electro-optical properties of LiNbO3 make it an important material for current and future applications. It has also been suggested as a possible lead-free replacement for present PZT-devices. The atomic layer deposition (ALD) technique offers controlled deposition of films at an industrial scale…
We present a brief overview of recent development in the field of nematic colloids with an emphasis on the topology of colloidal structures and recently discovered topologically nontrivial defect configurations. Nematic colloids are complex soft-matter systems, in which the topology of defects, induced by colloidal in…
Supported Ni@(RhNi-alloy) nanoparticles with a core-shell structure were prepared, which serve as an excellent catalyst towards hydrogen generation from N2H4BH3.
The “Hydrogen economy” as an energy solution has received worldwide attention. Development of efficient, economic and recyclable catalysts for hydrogen generation from hydrogen storage materials (e.g., NH3BH3, AB) under moderate conditions has been one of the most active research areas. In the well-studied transition…
Porous metal frameworks offer potentially useful applications for the aerospace, automotive and bio-medical industries. They can be used as electrodes, actuators, or as selective membrane films. The versatility of the physical features (pore size, pore depth, overall porosity and pore surface coverage) as well as the…