Materials Literature
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Herein a high-efficiency controlled release nanosystem for fluoroquinolone hydrochlorides was established by a characteristic vacuum-recrystal loaded process based on small pore mesoporous MCM-41. The system exhibited great drug loading capacity (62.31%), matrix type sustained-release behavior (5 days) and excellent b…
Co-assembly of differently sized and shaped nanoparticles within a polymer matrix can be controlled to form unique nanoparticle heterojunctions.
The chiral ligand S-1,2-bis(1H-benzimidazol-2-yl)ethanol, 1, reacts with manganese(II) salts to form cubanes which readily undergo oxidation reactions leading either to a tetranuclear manganese(II,III) mixed valence complex 4 or to a tetranuclear complex of ligand 5 where the secondary alcohol has been oxidised to an…
A cationic lipid-embedded poly(acrylic acid) (PAAc) gel layer coated on chitosan/superparamagnetic iron oxide nanoparticle (SPION) nanohybrid surfaces effectively modulates drug release and MR imaging contrast by pH-responsive morphological transformation and hierarchical alignment of the lipid assemblies.
Charge transport and recombination kinetics in urchin-like Zn/ZnO is discussed based on a dynamic IMVS model correlating to its configuration.
La 9.33 Ge 6 O 26 pellets synthesized by a molten-salt method exhibit higher conductivity owing to the high density and the avoidance of La 2 GeO 5 .
This work presents the first demonstration of atomic layer deposition (ALD) ruthenium oxide (RuO2) and its conformal coating onto vertically aligned carbon nanotube (CNT) forests as supercapacitor electrodes. Specific accomplishments include: (1) successful demonstration of ALD RuO2deposition, (2) uniform coating of R…
In this paper the assessment of the rolling contact fatigue life of an induction hardened raceway is presented. For determination of the equivalent subsurface stress distribution field in the raceway, 3D numerical model of the contact between the through hardened roller made of 100Cr6 steel and the surface hardened ra…
The dynamical response of systems with shape memory alloy (SMA) elements presents a rich behavior due to their intrinsic nonlinear characteristic. SMA’s nonlinear response is associated with both adaptive dissipation related to hysteretic behavior and huge changes in properties caused by phase transformations. These c…
The bridged imidazole dimers are some of the attractive fast photochromic compounds which have potential applications to the ophthalmic lenses, real-time hologram and molecular machines. The strategy for expanding their photochromic properties such as the colour variation and tuning the decolouration rates has been vi…
A series of composite films composed of μm-sized aluminum nitride (AlN) particles and polyimides (PIs) were fabricated using (a) rigid-chain sBPDA-PPD (sBPPD) PI and (b) flexible-chain sBPDA-ODA (sBPOD) PI as matrices. The relationship between their morphological structures and thermophysical properties were investiga…
Background: Base metal casting alloys are extensively used in dentistry to fabricate many oral appliances and a huge amount is wasted in the form of sprues and buttons during the casting procedure. Recycling and reusing these alloys by clean technologies may save our natural resources from being depleted and as well r…
The purpose of the present work was to examine in vitro corrosion and bioactivity of surface phytic acid treatment AZ31 magnesium alloys. Untreated AZ31 magnesium alloys were used as control. The surface morphologies of magnesium alloys were observed by SEM. EDS was used to analyze the surface chemical elemental compo…
Carbon blacks are used universally as fillers in polymer matrix for mechanical, electronical and thermal properties improvement. Plenty of studies show that the structure and surface properties affect the function of carbon blacks in polymer matrix intensively. However, the reinforcing mechanism is still controversial…
The UV-Vis absorption spectroscopy analysis reveals that prominent J-aggregation of ZnPc molecules was observed in the LB films while no such aggregation was found in the solution. Change in fluorescence color of ZnPc LB film from its solution confirms the appearance of new aggregation.
Ni-Fe/Cu/Co/Cu multilayer nanowire arrays were electrodeposited into the pores of AAO template by using dual-bath method. The morphology and structure of the nanowire arrays were characterized by scanning electron microscopy and transmission electron microscopy. Vibrating sample magnetometer and physical property meas…
A thermal and hydrothermal stable mesoporous ceramic acid (mCA) was synthesized by uniform coating of a WZrO(x) layer onto the internal surface of extra-large mesoporous silica (EP-FDU-12). Its ordered mesoporous structure and strong Brönsted acid sites display excellent thermal (1000 °C, air, 5 h) and hydrothermal (w…
The failure modes of thin metal films and ceramic coatings induced by both intrinsic (growth) stresses and external effects (uniaxial tension, alternating bending, thermal treatment) were studied. Stress relaxation that causes soft films and hard coatings to fail was demonstrated to be governed by essentially the same…
Vaterite is a crystalline polymorph of calcium carbonate that exhibits low stability in comparison with the other crystalline polymorphs of calcium carbonate. It often assumes a spherical shape. The physical properties of vaterite are utilized in advanced biomaterials such as drug delivery systems (DDSs). The potentia…
Interfacing synthetic materials with biomacromolecules provides new systems for biological applications. We report the creation of a reversible multivalent supramolecular "zipper" recognition motif between gold nanoparticles and proteins. In this assembly, carboxylate-functionalized nanoparticles interact strongly wit…