Materials Literature
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Surface-enhanced Raman scattering (SERS) has attracted great attention due to its high sensitivity and specificity in the detection of a variety of molecules. Recently, much effort has been focused on the development of novel nanostructured SERS substrate with reliable and excellent sensing performance. In this work,…
Plasma nanocoating of allylamine were deposited on the surfaces of multi-walled carbon nanotubes (MWCNTs) to provide desirable functionalities and thus to tailor the surface characteristics of MWCNTs for improved dispersion and interfacial adhesion in epoxy matrices. Plasma nanocoated MWCNTs were characterized using s…
Conductivity data of the xAgI(1 - x)AgPO(3) system (0 ≤ x ≤ 0.5) were collected in the liquid and glassy states. The difference in the dependence of ionic conductivity on temperature below and above their glass transition temperatures (T(g)) is interpreted by a discontinuity in the charge carrier's mobility mechanisms…
Recently, a density functional theory for hard particles with shape anisotropy was developed, the extended deconvolution fundamental measure theory (edFMT). We apply edFMT to hard dumbbells, arguably the simplest non-convex shape and readily available experimentally in the form of colloids. We obtain good agreement be…
Abstract We report a cyano‐bridged V–Nb bimetal assembly, K 0.59 V II 1.59 V III 0.41 [Nb IV (CN) 8 ] · (SO 4 ) 0.50 · 6.9H 2 O, exhibiting ferrimagnetism with a high Curie temperature ( T C ) of 210 K, which is the highest T C value among those of octacyano‐bridged bimetal assemblies. Such a high T C value originates…
Previously, we developed the "protein activation and release from cage by external light" (PARCEL) method for controlling the function of proteins by encapsulating them in a photodegradable hydrogel and subsequently releasing them by ultraviolet (UV) irradiation of the gel. However, controlling small proteins is diffi…
Nanofluidic arrays containing high-aspect-ratio nanochannels were used as a platform for the deposition of all nanoparticle multilayers. LbL assembly of 6 nm titania and 15 nm silica nanoparticles resulted in conformal multilayers of uniform thickness throughout the nanochannels. These multilayers are inherently nanop…
Molecular-dynamics simulations of the ablation of nanocrystalline Al films by ultrashort laser pulses in the low-fluence (no-ionization) regime (0--2.5 times the ablation threshold, ${F}_{\mathrm{th}}$) are reported. The simulations employ an embedded-atom method potential for the dynamics of the ions and a realistic…
We use a nonlocal van der Waals density functional (vdW-DF) approach to reexamine the problem of why noble gases are experimentally observed to adsorb on low-coordination atop sites rather than on high-coordination hollow sites for several different metal surfaces. Previous calculations using density functional theory…
We report the sonochemical synthesis of copper(I) hydride (CuH) by the ultrasonic irradiation of a copper(II) aqueous solution. A reaction mechanism based on the reduction of copper(II) by the ultrasound-generated hydrogen atoms is discussed. To the best of our knowledge, this is the first time that a metal hydride ha…
Abstract The treatment of free‐standing sheets of multiwalled carbon nanotubes (MWNTs) with a NH 3 /He plasma results in self‐supporting sheets of aligned N‐doped MWNTs (CN x ). These CN x sheets can be easily twist spun in the solid state to provide strong CN x yarns that are knottable, weavable, and sewable. The CN…
We propose an original approach for creating tunable electromagnetic metamaterials. We demonstrate experimentally that magnetic resonance of a split-ring resonator (“meta-atom” of a composite material) with a photodiode operated in photovoltaic mode can be tuned by changing the intensity of an external light source. M…
A range of fluoride-encapsulated octasilsesquioxane cage compounds have been prepared using the TBAF route. Our studies suggest that whilst it is relatively straightforward to prepare fluoride-encapsulated octasilsesquioxane cage compounds with adjacent sp(2) carbons, leading to a range of aryl and vinyl substituted c…
A chromophore featuring a diyne bridge that connects two dibromobenzene moieties shows a much improved two-photon singlet oxygen generation ability in the biological transparency window compared to a related and relevant literature benchmark, as a result of a distorted ground state.
The self-retracting motion of a graphene flake on a stack of graphene flakes is studied using molecular dynamics simulations. It is shown that in the case when the extended flake is initially rotated to an incommensurate state, there is no barrier to the self-retracting motion of the flake and the flake retracts as fa…
Using nonequilibrium molecular dynamics simulations, we show if a multi-walled carbon nanotube (MWNT) is heated asymmetrically, an evident thermal rectification can be detected. We attribute the observed rectification to the asymmetric radial thermal transport between constructing layers in MWNT. The underlying physic…
Films and coatings were produced from a noncellulosic polysaccharide-rich wood hydrolysate (WH), and the resulting oxygen barrier performance was improved by a selective choice of upgrading conditions. The WH was obtained from process water in the hydrothermal treatment of hardwood and subjected to one of three altern…
Catalyzing magnesium hydride by 5 mol % titanium fluoride is observed to have a pronounced impact on the materials nanoscaling and the thermodynamics of H sorption. Surprisingly small ∼30 nm MgH 2 crystallites result after hydrogen uptake, which are apparently stabilized by abundant interface interactions, arresting O…
In-situ flow alignment kinetics of a self-assembled lamellar phase polystyrene- block -polyisoprene (PS- b -PI, M w = 26 500 g/mol, f PS = 51%) diblock copolymer melt has been investigated in detail under mechanical large amplitude oscillatory shear (LAOS) utilizing a unique Rheo–SAXS combination developed in cooperat…
Cobalt hydroxide (β-Co(OH)2) thin film supercapacitors are developed for the first time via screen printing and their potential application towards energy storage (as an electrode material within a supercapacitor) explored. The highly uniform, porous nanostructures were synthesized via a novel, hydrothermal, template-…