Materials Literature
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Ultrafine metal-oxide-decorated hybrid carbon nanofibers (CNFs) were fabricated by a single-nozzle co-electrospinning process using a phase-separated mixed polymer composite solution and heat treatment. To decorate metal oxides on the CNF surface, core (PAN) and shell (PVP) structured nanofibers (NFs) were fabricated…
The ability of diamond nanoparticles (nanodiamonds, NDs) to deliver small interfering RNA (siRNA) into Ewing sarcoma cells is investigated with a view to the possibility of in-vivo anticancer nucleic-acid drug delivery. siRNA is adsorbed onto NDs that are coated with cationic polymer. Cell uptake of NDs is demonstrate…
We have developed a method for prediction of the hardest crystal structures in a given chemical system. It is based on the evolutionary algorithm USPEX (Universal Structure Prediction: Evolutionary Xtallography) and electronegativity-based hardness model that we have augmented with bond-valence model and graph theory.…
Understanding and predicting the behavior of water, especially in contact with various surfaces, is a scientific challenge. Molecular-level understanding of hydrophobic effects and their macroscopic consequences, in particular, is critical to many applications. Macroscopically, a surface is classified as hydrophilic o…
This tutorial review presents emerging lines of investigations directed towards the development of dynamic combinatorial materials and devices. These can be defined as multi-component chemical systems which, thanks to the reversibility of their interconnections within networks of competing reactions, and thanks to the…
Abstract Novel ordered hierarchical mesoporous/microporous carbon (OHMMC) derived from mesoporous titanium‐carbide/carbon composites was prepared for the first time by synthesizing ordered mesoporous nanocrystalline titanium‐carbide/carbon composites, followed by chlorination of titanium carbides. The mesostructure an…
A universal mechanism that controls the zero thermal expansion (ZTE) behavior of the antiperovskite manganese nitrides is discovered. Modulating the Mn occupancy at its lattice sites leads to a drastic change in the thermal expansion behavior. The Mn site occupancy can be reduced by nanostructuring the material, gener…
We demonstrate the design of composite plasmonic metal/semiconductor photocatalysts, which show enhanced visible light photocatalytic activity compared to the semiconductor alone. We show that the overlap between the illumination source spectrum, semiconductor absorbance spectrum and metal nanoparticle surface plasmon…
We report a proof-of-concept demonstration of negative capacitance effect in a nanoscale ferroelectric-dielectric heterostructure. In a bilayer of ferroelectric Pb(Zr0.2Ti0.8)O3 and dielectric SrTiO3, the composite capacitance was observed to be larger than the constituent SrTiO3 capacitance, indicating an effective n…
ZnO is a promising high figure-of-merit (ZT) thermoelectric material for power harvesting from heat due to its high melting point, high electrical conductivity σ, and Seebeck coefficient α, but its practical use is limited by a high lattice thermal conductivity κ(L). Here, we report Al-containing ZnO nanocomposites wi…
Supramolecular polymer networks are three-dimensional structures of crosslinked macromolecules connected by transient, non-covalent bonds; they are a fascinating class of soft materials, exhibiting properties such as stimuli-responsiveness, self-healing, and shape-memory. This critical review summarizes the current st…
The principles of operation of permanent magnets are summarized, and their development is reviewed. The key figure of merit, the energy product, improved exponentially over much of the 20th century, doubling roughly every 12 years. Yet it has not improved significantly in the last 20 years. Constraints on further deve…
There is growing interest in the detection of target analytes in biological systems which can be achieved by the development of suitable biosensors and lab-on-a-chip devices[1]. Media produced using the sol-gel method are suitable host materials for such biological based applications[2]. These robust glass-like materi…
There has been increased interest of the use of metal surfaces in conjunction with fluorescence molecules employing a plasmon effect, sometimes referred to as metal enhanced fluorescence[1]. This can be advantageous as some photophysical properties, such as the emission intensity of the fluorophore, can be enhanced. W…
Referring to the compositions of the second phases in zirconium alloys,(Zr,Nb)_2Fe, Zr(Nb,Fe)_2 andβ-Nb were prepared.Chemical composition analysis results indicated that the compositions of the experimental alloys are the same as those of the second phases in zirconium alloys. XRD analysis indicated that the structur…
We report a new strategy for a rapid photoinduced synthesis of monodisperse ligand-coated silver nanoparticles. Such nanoparticles are produced through a very fast reduction of Ag+ by α-aminoalkyl radicals which are first generated from hydrogen abstraction toward an aliphatic amine by the excited triplet state of the…
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Beton dibuat dari campuran agregat halus, agregat kasar, semen, dan air dengan perbandingan tertentu serta dapat pula ditambahkan dengan bahan tambah yang lainya sesuai dengan keperluan apabila dianggap perlu. Agregat merupakan unsur pembentuk beton yang paling besar komposisinya yaitu sebesar 70-75% dari total volume…