Materials Literature
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The self-assembled nanotube structure of poly(styrene- alt -maleic anhydride) derivatives had been previously ascribed to its favorable chirality on the polymer chain. Therefore, poly(styrene- alt -maleic acid) (SMAc) was used as a template to chelate with zinc ion and to generate SMAc-Zn with rigid-chain structure fo…
We demonstrated the use of combinatorial methods to optimize the filling of spent nuclear fuel (SNF) in metal canisters for final deep SNF repository, according to the maximal allowed thermal power per canister Pmax and the limit of n = 4 spent-fuel assemblies per canister. As a next step, the deposition time can be o…
The origin and the consequences of the electric failure of in-service composite hollow insulators used in railway transportation were investigated. Direct electrical measurements made it possible the detection of partial discharges (PD) and UV emissions allowed of identifying the location of the PD at the interface be…
We investigate the effect of the lattice topology (ideal hexagonal rings vs. ditrigonal rings) and cluster size of model clusters (three-ring vs. seven-ring clusters) on the nature of benzyl alcohol adsorption on kaolinite surfaces using quantum chemical calculations with an emphasis on the equilibrium configuration,…
Dielectric characteristics of Ba6CoNb9O30 tetragonal tungsten bronze ceramics have been evaluated over a broad temperature and frequency range. A broad dielectric peak with strong frequency dispersion is observed at 140–225 K, which well follows the Vogel–Fulcher relationship and indicates the relaxor ferroelectric na…
Yunnan Baiyao is a traditional Chinese herbal medicine that has been used to treat wounds for over 100 years. Here, we use Atomic Force Microscopy (AFM) to determine nano-scale structures of the Yunnan Baiyao. AFM images revealed uniform nanofibers present in relatively high abundance in a solution of this medicine. F…
In this study, we report the fabrication of engineered iron oxide magnetic nanoparticles (MNPs) functionalized with anti-human epidermal growth factor receptor type 2 (HER2) antibody to target the tumor antigen HER2. The Fc-directed conjugation of antibodies to the MNPs aids their efficient immunospecific targeting th…
Polymer capsules prepared by the successive adsorption of oppositely charged polyelectrolytes are modified by silver nanoparticles using the silver-mirror reaction. Substantial differences in the structure of nanocomposite polyelectrolyte shells of capsules formed on cores composed of polystyrene and CaCO 3 are reveal…
Orientation of the gap of a split ring resonator determines whether the resonance is an electric or magnetic response. When the gap of a split ring resonator is parallel to the incident E-field, an electric resonance is excited, and when the gap is perpendicular to the E-field, a magnetic resonance is excited. In this…
We analyze numerically the thermal conductivity of single-walled carbon nanotubes placed on a flat rigid substrate. We demonstrate that the character of thermal conductivity depends crucially on the interaction between the nanotube and the substrate. In particular, we reveal that unlike the well-established anomalous…
The pressure effects on the Jahn–Teller (JT) distortion of three representative compounds belonging to the LaMn1−xGaxO3 (x = 0.2, 0.3, 0.4) family were widely investigated by means of X-ray diffraction and Raman spectroscopy. A compound with a fully coherent JT distorted structure (x = 0.2), one with regular octahedra…
In this paper, we discuss and compare various nanocage materials proposed theoretically as storage medium for hydrogen. Doping of transition elements leads to clustering which reduces the gravimetric density of hydrogen, while doping of alkali and alkali-earth metals on the nanocage materials, such as carborides, boro…
Abstract A method for fabricating epoxy resin films dispersing the surface‐modified barium titanate (BT) particles (BT‐epoxy resin composite films) are proposed. BT particles with a size of 7.8 nm and a crystal size of 8.6 nm were synthesized with a complex alkoxide method. To introduce epoxy groups on the BT particle…
Two series of hydrogen-bonded side-chain liquid crystal polymers have been prepared by mixing components containing carboxyl acid and pyridyl-based fragments. We have focused our attention on the effect that the position of the hydrogen bond donor or acceptor site attached to the side-chain backbone has on the hydroge…
Abstract The composite of manganese dioxide‐polyaniline (MnO 2 ‐PANI) was successfully prepared by cyclic voltammetry (CV) from a 0.5 M H 2 SO 4 solution containing 0.2 M aniline and 0.5 M MnSO 4 . Scanning electron microscopy (SEM) images revealed that cauliflower like manganese dioxides entangled with PANI were gene…
We investigate the effects of magnetic impurities in a superconducting state with s ± pairing symmetry. Within a two-band model, we find that the intra-band magnetic scattering serves as a pair breaker while the inter-band magnetic scattering preserves pairing and hardly affects transition temperature in the Born limi…
The elastic coefficients (C ij ), bulk compression moduli (B), and shear moduli (G) of layered tetragonal LaFeAsO, SrFe2As2, and LiFeAs crystals, which are potential basic phases for new superconductors of the 1111-, 122-, and 111-FeAs groups, respectively, have been calculated from first principles using the full-pot…
The peculiarities of the modified Stepanov technique are considered. The advantages of the method for growth of oxide crystals from melts of complex compositions are shown. Crystallization conditions are given to obtain optically homogeneous Sr x Ba1 − x Nb2O6, BaWO4, SrMoO4, LiNbO3, and Ca3(Nb, Ga)2Ga3O12 single crys…
Abstract The crystal structure of nechelyustovite, ideally Na 4 Ba 2 Mn 1.5 ☐ 2.5 Ti 5 Nb(Si 2 O 7 ) 4 O 4 (OH) 3 F(H 2 O) 6 , a 5.447(1) Å, b 7.157(1) Å, c 47.259(9) Å, α 95.759(4)°, β 92.136(4)°, γ 89.978(4)°, V 1831.7(4) Å 3 , space group P , Z = 2, D calc. 3.041 g cm –3 , from Lovozero alkaline massif, Kola Penins…
The relationship between the degree of stress concentration and the H p(y) signals of metal magnetic memory was investigated by tension–tension fatigue tests. Sheet specimens of 45CrNiMoVA steel were machined and two types of notches were cut into them to obtain two stress concentration factors. During the testing pro…