Materials Literature
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Magnetic and magnetocaloric properties of cubic Laves phase RCoNi (R = Gd, Tb, Dy, and Ho) compounds have been studied. The RCoNi (R = Gd, Tb, Dy, and Ho) compounds order ferromagnetically at ∼200 K, ∼113 K, ∼68 K, and ∼42 K (TC), respectively. Field dependent magnetization data of RCoNi at 5 K in fields up to 7 T rev…
Cross-linking of biocompatible ligand shells significantly improves the stability of nanocrystals in the biological environment. We report a detailed spectroscopic study of radical initiated reactions on poly(isoprene)- b -poly(ethelene glycol) encapsulated CdSe/CdS/ZnS core–shell–shell quantum dots. It was found that…
NiTi is promising for the use as bone scaffold, because the pseudoelasticity or the one- and two-way shape memory effect in the physiological window can mechanically stimulate the adherent cells. Such stimuli can enhance osseointegration and might reduce stress shielding associated with load bearing implants. The pres…
Single-walled carbon nanotubes (SWCNTs) have extensive potential industrial applications due to their unique physical and chemical properties; yet this also increases the chance of human and environment exposure to SWCNTs. Due to the current lack of hazardous effect information on SWNCTs, a standardized genotoxicity b…
Unicellular algae called diatoms morph biomineral compounds into tough exoskeletons via complex intracellular processes about which there is much to be learned. These exoskeletons feature a rich variety of structures from submicroscale to milliscale, many that have not been reproduced in vitro. In order to help unders…
We show that in the presence of a rapidly modulated dielectric permittivity with a large modulation depth (Kapitza medium) a novel and robust regime of diffractionless electromagnetic propagation occurs. This happens when the mean value to depth ratio of the dielectric profile is comparable to the small ratio between…
A simple and effective route to improve the fluorescence of carbon dots is reported. A weak fluorescent solution was obtained by a diminution step to obtain tiny particles from bagasse-based carbonaceous blocks. This solution was subjected to hydrothermal treatment under alkaline conditions to improve its fluorescent…
The continuous development of science and technology in all industrial sectors means connecting and usage of a wide range of new knowledge together with implementation of new modern technologies for production of materials with high functional, specific and special properties. Intermetallic compounds TiNi with shape-m…
Anomalous trends in nanoparticle correlation and motion are reported in soft nanoparticle suspensions using static and dynamic x-ray scattering measurements. Contrary to normal expectations, we find that particle-particle correlations decrease and particle dynamics become faster as volume fraction rises above a critic…
An active elastodynamic cloak destructively interferes with an incident time harmonic in-plane (coupled compressional/shear) elastic wave to produce zero total elastic field over a finite spatial region. A method is described which explicitly predicts the source amplitudes of the active field. For a given number of so…
This paper reports a systematic investigation of corrosion in 0.6 mol/l NaCl of freshly polished 1050‐H24, 6082‐T6, 2024‐T3 and 7075‐T6 Al alloys by single‐cycle anodic polarization using different anodic current limits for scan reversal (i rev ). For all alloys but Al 1050‐H24, an inflection point was repeatedly iden…
The characterization of energy influxes from plasma to substrate during sputter deposition of ZnO films is presented and discussed. Measurements were carried out in a triple rf magnetron sputter deposition system using calorimetric probes in various Ar/N 2 and Ar/H 2 mixtures at typical substrate positions. By variati…
Recent studies have pointed out an existence of the room-temperature ferromagnetism in nanostructured BaTiO3 materials. It has been thought that the ferromagnetism is due to intrinsic defects. To elucidate this issue, we have prepared BaTiO3 nanoparticles by mechanical milling, starting from diamagnetic/nonmagnetic Ba…
Agarose has been utilized in protein crystallization to control nucleation of protein crystals. It reduces convection, prevents crystal sedimentation, and increases tolerance to environmental perturbations, resulting in high-quality protein crystals. However, crystallographers have seldom used agarose hydrogel because…
We investigate analytically the occurrence of magnonic defect states in the exchange regime for the system geometry with the defect linking two semi-infinite superlattices at the same symmetry points. The frequency ranges forbidden and allowed to defect states are determined in the low-frequency region. Non-overlappin…
Fiber-reinforced composites are of great interest to NASA for deep-space habitation missions due to the specific strength, modulus and potential radiation shielding properties. However, the durability of these materials on long-duration missions has not been evaluated. Few studies have been conducted on the radiation…
This investigation addresses the structural, optical, and electrical properties of germanium incorporated cadmium oxide (CdO : Ge) thin films. The focus was on the improvement in carrier mobility to achieve high transparency for near-infrared light and low resistivity at the same time. The properties were studied usin…
Strong infrared photoluminescence (PL) was observed for the first time from black Si (b-Si) formed by femtosecond laser irradiation and treated by rapid thermal annealing. The PL peak energy changes from 0.78 to 0.84 eV (1.59 to 1.48 μm) when increasing the annealing temperature from 500°C to 1200°C, showing a tunable…
This report describes the synthesis, characterization, and magnetic properties of two novel phosphonate-based Co(II) cages. Structural investigation reveals some interesting geometrical features in the molecular core that may provide new models in single molecular magnetic materials.
!`!`We report on the electronic transport of graphene nanoribbon (GNR) arrays fabricated by a chemical unzipping of well-aligned single-walled carbon nanotubes. The high quality of narrow GNRs is implied by the existence of high-field current saturation and the relatively low intensity of disorder peak in parallel pol…