Materials Literature
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In this study, paclitaxel loaded poly( L-lactic acid) (PTX-PLLA) microparticles were prepared using solution enhanced dispersion by supercritical CO2(SEDS) technique. This supercritical antisolvent technique offers the advantage of negligible organic solvent residua in the drug loaded microparticles. Scanning electron…
Nano TiO2 material is an extensively used and adequately studied material and has a close contact with human in various fields, such as dope, dye, ceramic, cosmetic and medicine. Therefore, it’s very important to study the biocompatibility and biosafety of nano TiO2 materials. In the present study, various nano TiO2 m…
Yttrium aluminum garnet (Y 3 Al 5 O 12 , YAG) nanocrystalline powders were synthesized by a novel sol–gel combustion process. Yttrium acetate and aluminum sec‐butoxide were used as the precursors and triethanolamine was used as the chelating agent and fuel. Thermal and crystallization behaviors of the YAG precursor po…
Amorphous silicon nitride coatings were reinforced with carbon nanotubes and dense carbon nanofibers. These reinforcements were all fabricated with graphene layers oriented parallel to the fiber axis, and some of the nanofibers were also heat‐treated at high temperature to improve graphitic ordering. The effectiveness…
We have developed a simple and flexible chemical method to synthesize orderly metallic nanoaggregates using a designed SiO 2-Au core-shell building block. The number of the building blocks in a nanoaggregate is tunable from one to three. These metal nanostructures can generate an enlarged localized electromagnetic fie…
Micropatterns of ZnO nanoarrays were simply and successfully fabricated in an aqueous solution without any high-temperature treatment and/or expensive catalyst. In situ forced hydrolysis of patterned anhydrous zinc acetate, derived by ultraviolet irradiation with a photomask, resulted in heterogeneous nucleation and g…
The breakdown of the no-slip condition at fluid–solid interfaces generates a host of interesting fluid-dynamical phenomena. In this paper, we consider such a scenario by investigating the low-Reynolds-number hydrodynamics of a novel ‘slip–stick’ spherical particle whose surface is partitioned into slip and no-slip reg…
Light from confusion: A set of doubly N-confused calix[6]phyrins bearing two coordination sites (NNNC,NNNC or NNNN,NNCC) were synthesized. Their bis-PtII complexes exhibit near-infrared emission around 1000 nm, which could make these compounds ideal for biological applications.
Readily recyclable biobased plastics were designed and synthesized utilizing the thermally reversible DA reaction. Furyl-telechelic poly(butylene succinate) prepolymers (PBSF(2)) were extended with bis- and tris-maleimide linkers (M(2) and M(3)) by the DA reaction in the bulk state to produce linear and network polyme…
We demonstrate a versatile methodology combining both covalent surface anchoring and polymer cross-linking that is capable of forming long-lasting coatings on reactive and nonreactive surfaces. Polymers containing reactive methoxysilane groups form strong Si-O-Si links to oxide surfaces, thereby anchoring the polymer…
Two dendron-based gelators with minor structure variations at the focal group are reported and they exhibit very different self-assembly behaviors. One of them acts as a lyotropic and thermotropic liquid crystal.
Colloids of gold and palladium nanoparticles have been prepared by the Solvated Metal Atom Dispersion (SMAD) method. Digestive ripening, a process involving mixing of the as-prepared gold and palladium colloids consisting of polydisperse nanoparticles and refluxing the mixture in the presence of a surfactant resulted…
Eu 2 O 3 ‐doped aluminoborosilicate glasses were prepared in air at high temperature. Luminescence measurements were used to investigate a valence change from Eu 3+ to Eu 2+ ions in the aluminoborosilicate glasses. The results showed that the doped Eu 3+ ions were partially reduced to Eu 2+ in the Eu 2 O 3 :RO–Al 2 O…
Functionalized collagen that incorporates exogenous compounds may offer new and improved biomaterials applications, especially in drug-delivery, multifunctional implants, and tissue engineering. To that end, we developed a specific and reversible collagen modification technique utilizing associative chain interactions…
Every colloid has a gold lining: The direct synthesis of hydrogen peroxide from hydrogen and oxygen is attracting much interest as an alternative method for producing H2O2. Pd-Au bimetallic nanocolloid exhibits high catalytic activity for the direct synthesis of H2O2 from H2 and O2. The high activity results from the…
A ZrB 2 –SiC–ZrC ceramic was produced by reactive hot pressing using Zr, Si, and B 4 C as raw materials. The kinetics of the reaction process was studied. The reduction of powders by ball milling is of crucial importance for the sintering. The self‐propagating high‐temperature synthesis reaction between the raw powder…
Metamaterials provide unprecedented freedom and flexibility in the creation of new structures, which control electromagnetic wave propagation in very unusual ways. Very recently various theoretical designs for an electromagnetic cloak were suggested and an experimental realization of a partial cloak operating in a two…
A new series of encapsulated fluoride polyhedral oligomeric silsesquioxane (POSS) materials, [(CH 3 ) 4 N + ][F − @(R 8 Si 8 O 12 )], where R = vinyl, phenyl, styrenyl, trifluoropropyl, nonafluorohexyl, or tridecafluorooctyl, were synthesized by the reaction of tetramethylammonium fluoride with the R 8 Si 8 O 12 POSS…
The use of microporous materials with ordered porous structures as the hosts to encapsulate metal nanoclusters has attracted particular interest in catalysis because the pore size restriction could limit the growth of nanoclusters and lead to an increase in the percentage of the catalytically active surface atoms. Thi…
A fundamental understanding of the role of catalysts in dehydrogenation of MgH(2) nanoclusters is provided by carrying out first-principles calculations based on density functional theory. It is shown that the transition metal atoms Ti, V, Fe, and Ni not only lower desorption energies significantly but also continue t…