Materials Literature
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An electron beam (EB) irradiation effect on the $\mathrm{Si}(001)\mathrm{\text{\ensuremath{-}}}c(4\ifmmode\times\else\texttimes\fi{}2)$ surface was investigated by using low-energy electron diffraction. Quarter-order spots become dim and streaky by EB irradiation below $\ensuremath{\sim}40\text{ }\text{ }\mathrm{K}$,…
BACKGROUND: Folate receptor (FR) is selectively amplified among human tumors, including in 70% of myeloid leukemias. FR-targeted liposomal delivery is an attractive strategy for enhancing the therapeutic efficacy of anticancer agents against FR(+) tumors. In this study, FR-targeted liposomal daunorubicin was evaluated…
We report simultaneous NMR and electrical transport experiments in the pressure range near the boundary of the antiferromagnetic spin density wave (SDW) insulator and the metallic/superconducting (SC) phase in (TMTSF)2PF6. Measurements indicate a tricritical point separating a line of second-order SDW/metal transition…
TRS is developing new actuators based on single crystal piezoelectric materials such as Pb(Zn<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>1-x</sub>Ti<sub>x</sub>O<sub>3</sub> (PZN-PT) and Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>x-1</sub>Ti<sub>x</sub>O<sub>3</sub> (PMN-PT) which exhibit very high piezoelectric coefficients (d…
Pt additions substituted for Ni in NiTi alloys are known to increase the transformation temperature of the alloy but only at fairly high Pt levels. However, until now only ternary compositions with a very specific stoichiometry, Ni<sub>50-x</sub>Pt<sub>x</sub>Ti<sub>50</sub>, have been investigated and then only to ve…
UNLABELLED: Cytocompatibility of particle zein (Pzein) and film zein (Fzein) was evaluated and compared with polyhydroxybutyrate (PHB), its copolymer poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV), polylactic acid (PLA), and collagen, using HL-7702 cells, in terms of cell attachment rate within 3 h, and cell viabilit…
The microstructure, transformation temperatures, basic tensile properties, shape memory behavior, and work output for two (Ni,Ti)Pt high-temperature shape memory alloys have been characterized. One was a Ni<sub>30</sub>Pt<sub>20</sub>Ti<sub>50</sub> alloy (referred to as 20Pt) with transformation temperatures above 23…
Abstract Polymorphic crystals and complex multiple melting behavior in an aliphatic biodegradable polyester, poly(butylene adipate) (PBA), were thoroughly examined by wide‐angle X‐ray diffraction (WAXD) and differential scanning calorimetry (DSC). Further clarification on mechanisms of multiple melting peaks related t…
Abstract Lung cancer is usually fatal once it becomes metastatic. However, in order to develop metastases, a tumor usually invades the basal membrane and enters the vascular or lymphatic system. In this study, a three‐dimensional artificial membrane using collagen type I, one of the main components of basal membranes,…
Abstract Cellulose nonwoven mats of submicron‐sized fibers (150 nm–500 nm in diameter) were obtained by electrospinning cellulose solutions. A solvent system based on lithium chloride (LiCl) and N, N ‐dimethylacetamide (DMAc) was used, and the effects of (i) temperature of the collector, (ii) type of collector (alumin…
The equilibrium sizes of micro- and nano-domains caused by electric field of atomic force microscope tip in ferroelectric semiconductor crystals have been calculated. The domain was considered as a prolate semi-ellipsoid with rather thin domain walls. For the first time we modified the Landauer model allowing for semi…
The effect of purification on room temperature electronic transport properties of single-wall carbon nanotubes (SWNT) was studied by submerging samples into liquid mercury. The conductance plots of purified SWNTs showed plateaus, indicating weak dependence of the electrical resistance on the length of the tube connect…
The problem of importance of strong correlations for the electronic structure, transport, and magnetic properties of half-metallic ferromagnetic ${\mathrm{CrO}}_{2}$ is addressed by performing density functional electronic structure calculations in the local spin density approximation (LSDA) as well as using the LSDA+…
The contribution to the low frequency internal friction and the thermal conductivity due to optically vibrating edge dislocation dipoles is calculated within the modified Granato-Lucke string model. The results are compared with the recent experiments on plastically deformed samples of Al, Ta and Nb at low temperature…
We report a simple theoretical derivation of the spectrum and damping of spin waves in a cylindrical periodically structured magnetic nanowire (cylindrical magnonic crystal) in the "effective medium" approximation. The dependence of the "effective" magnetic parameters upon the individual layer parameters is shown to b…
The electronic properties of multi-wall carbon nanotubes (MWNTs) have attracted much attention because they could lead to nano-sized electronic devices. Using chemical vapor deposition (CVD), MWNTs are produced in large quantities at a low cost. CVD-produced MWNTs, however, generally contain a considerable amount of s…
Thin films of cadmium stannate was prepared using low cost cadmium acetate and tin (II) chloride precursors by spray pyrolysis technique at three different substrate temperatures of 400, 450 and 5000 C. A novel procedure of simultaneously forming additional layer, introduced for the first time in this work, on the alr…
The static configuration of ferroelectric domain walls was investigated using atomic force microscopy on epitaxial PbZr(0.2)Ti(0.8)O(3) thin films. Measurements of domain wall roughness reveal a power-law growth of the correlation function of relative displacements B(L) alpha L(2zeta) with zeta approximately 0.26 at s…
The crystal structure and electronic and magnetic properties of magnetic molecular conductor (EDTDM) 2 FeBr 4 are investigated. The material undergoes a SDW transition at T MI ∼11 K and an antiferromagnetic transition of Fe 3+ d -spins at T N =3 K. In addition to the appearance of an anomaly in the resistivity around…
Resistivity, thermopower and Hall coefficient have been systematically measured for polycrystalline samples of (Bi 1- x Pb x ) 1.8 Ba 2 Rh 1.9 O y . An upturn of the resistivity and the Hall coefficient below 50 K is ascribed to decrease in the density of states due to a pseudogap formation. The thermopower and Hall c…