Materials Literature
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This feature article introduces the strategies on the design of highly efficient nanoparticle (NP) catalytic systems in ionic liquids (ILs). The employment of functional ILs as the media for NP preparation and catalysis could prove advantageous in terms of enhancing both NP stability and catalytic activity. Hydroxyl g…
In this study, the vibration and stability analysis of a single-walled carbon nanotube (SWCNT) coveying nanoflow embedded in biological soft tissue are performed. The effects of nano-size of both fluid flow and nanotube are considered, simultaneously. Nonlocal beam model is used to investigate flow-induced vibration o…
Novel transformations of metal porphyrins, such as nickel, zinc, copper, and silver porphyrins, to magnesium porphyrins are described. The reactions were accomplished by using 4-methylphenylmagnesium bromide in toluene. The scope of the reactions was wide and various magnesium porphyrins were obtained (see figure). Th…
We describe a new class of hierarchical containers that are formed via single-step assembly and, at a later time, self-destruct because of their packaged contents. These containers are spherical capsules formed by electrostatic complexation of the anionic biopolymer, gellan gum, with the cationic biopolymer, chitosan.…
A switch in time: A fast precipitation technique was used to prepare 75 nm FeII spin-crossover nanocrystals. Their photoswitching dynamics, based on the light-induced excited spin-state trapping effect, has been investigated by means of optical spectroscopy. A significant variation of the switching proprieties is obse…
William Hosford's book is ideal for those involved in designing sheet metal forming processes. Knowledge of plasticity is essential for the computer simulation of metal forming processes and understanding the advances in plasticity theory is key to formulating sound analyses. The author makes the subject simple by avo…
Thermoplastic polyurethane is a commonly used polymer in our daily lives. Microcellular injection molding (a.k.a. MuCell) is an emerging method capable of mass-producing thermoplastic polyurethane foams with tunable microstructures and properties. This study investigated the effects of four main processing parameters—…
Abstract Iron sulfide scale deposition is a common problem in sour oil and gas wells. Accumulation of iron sulfide in the production tubing causes reduction of well deliverability. Conventional chemical means to remove Iron sulfide scale usually involve hydrochloric acid and other mineral acids. The composition and cr…
Abstract Hierarchically‐porous, rigid inorganic structures have attracted appreciable interest in a wide range of applications, including catalysis, filtration, sensing, and energy storage/harvesting. Naturally‐occurring, hierarchically‐porous, rigid assemblies with a wide range of three‐dimensional (3D) structures ar…
Chelation of the boron center of the borondipyrromethene (BODIPY) platform by a catecholate ligand results in effective fluorescence suppression. Electron transfer from the chelating unit to the adjacent chromophore upon excitation is responsible for fluorescence quenching. Under the influence of a photoacid generator…
Abstract This is a pioneering study on the synthesis and application of composites based on micro‐ and nanodiamonds for the photocatalytic degradation of environmental water pollutants. Micro‐ and nanodiamond powders (with particle sizes of 1–3 μm and 2–10 nm, respectively) were combined with TiO 2 , by varying the ca…
The doping of colloidal semiconductor nanocrystals (NCs) presents an additional knob beyond size and shape for controlling the electronic properties. An important problem for doping with aliovalent elements is associated with resolving the location of the dopant and its structural surrounding within small NCs, an issu…
ABSTRACT We describe here the design and synthesis of the polyhedral oligomeric silsesquioxane (POSS)‐based dual‐functional molecular fillers for simultaneously lowering refractive indices and improving thermomechanical properties of conventional polymers. We prepared the composite films with poly(methyl methacrylate)…
A photoresponsive polyelectrolyte multilayer film containing a diselenide functional group is fabricated using an unconventional layer-by-layer method. The polycation backbone is constructed through copolymerization of di-(1-hydroxylundecyl) diselenide and 1,4-bis(2-hydroxyethyl)piperazine with 2,4-diisocyanatotoluene…
Dynamic wetting on the flexible hydrophilic pillar-arrays is studied using large scale molecular dynamics simulations. For the first time, the combined effect of the surface topology, the intrinsic wettability and the elasticity of a solid on the wetting process is taken into consideration. The direction-dependent dyn…
We experimentally show electrically controlled guided-mode resonant thermo-optic tunable optical filters. We design the devices using numerical methods based on rigorous coupled wave analysis and pattern the structure with a UV laser interferometric lithography system. The fabricated devices consist of subwavelength a…
The anisotropy of Ti${}_{2}$AlC transport properties is investigated focusing on the Hall effect and resistivity vs temperature measurements performed on a highly (000l)-oriented thin film and a bulk polycrystalline sample. Experimental data are interpreted on the basis of density functional theory calculations includ…
This article details the influence of zirconium doping on the piezoelectric properties and relaxor characteristics of 94( Bi 1/2 Na 1/2 ) TiO 3 –6 Ba ( Zr x Ti 1− x ) O 3 ( BNT –6 BZT ) bulk ceramics. Neutron diffraction measurements of BNT –6 BZT doped with 0%–15% Zr revealed an electric‐field‐induced transition of t…
To minimize the side effect of chemotherapy, a novel reduction/pH dual-sensitive drug nanocarrier, based on PEGylated dithiodipropionate dihydrazide (TPH)-modified hyaluronic acid (PEG-SS-HA copolymer), was developed for targeted delivery of doxorubicin (DOX) to hepatocellular carcinoma. The copolymer was synthesized…
Commercial Gd-containing complexes are often used as MRI reporters in cellular labeling procedures as they are internalized into endosomes by pinocytosis. A methodology has been applied to assess the relative stability of three commercial Gd contrast agents following cellular uptake in fibroblasts and macrophages. It…