Materials Literature
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We report chemically synthesized highly crystalline lanthanum strontium manganite (LaSrMnO3) and Eu-doped Y2O3 and their composites. The synthesis yields nanoparticles of size 30–40nm. Magnetic measurements performed on nanoparticles and composites show magnetic transition at about 370K with a superparamagnetic behavi…
Abstract New thermoplastic segmented poly(thiourethane‐urethane)s (SPTUUs) were prepared by a one‐step melt polymerization from 20 to 80 mol % poly(tetramethylene oxide) of $\overline M _{\rm n}$ = 1000 or poly(hexamethylene carbonate) diol (PHCD) of $\overline M _{\rm n}$ = 860 as soft segments, hexamethylene diisocy…
PURPOSE: To compare three new macromolecular polyethylene glycol (PEG) -core dendrimeric gadolinium(Gd)-based MRI contrast agents for their applicability in quantitative assays of endothelial leakiness and tissue vascular density for the differentiation of cancer from normal soft tissues. MATERIALS AND METHODS: Thirty…
Abstract Peptide/polymer hybrid molecules consisting of poly(butylacrylate) chains, covalently attached to a cyclic D ‐ alt ‐ L ‐octapeptide, were prepared by the in situ ATRP of butylacrylate using a cyclic peptide that was modified at three distinct positions with an initiator group. The apparent molar mass of the p…
The properties of a single layer of h-BN on top of a Rh(111) surface are discussed in terms of an ab initio generated force field approach as well as by direct ab initio density-functional theory (DFT) calculations. A single-layer model for the h-BN/Rh(111) nanomesh, in contrast to a previously considered (incomplete)…
The single-wall carbon nanotubes (SWCNTs) are one of the new materials ofemerging technologies. They are becoming increasingly studied for the possibleapplications in electronics, optics and biology. In particular, very promising fields ofapplication are the development of optical biosensors and the intracellular drug…
We engineered patterned co-cultures of primary neurons and astrocytes on polyelectrolyte multilayer (PEM) films without the aid of adhesive proteins/ligands to study the oxidative stress mediated by astrocytes on neuronal cells. A number of studies have explored engineering co-culture of neurons and astrocytes predomi…
Abstract A real ON–OFF carrier switch based on a new ferrocenyl diarylethene compound (DTE‐FC) as the light‐sensitive and photoswitching layer in an organic light‐emitting device (OLED) with a multilayer sandwich structure has been prepared. This switch layer functions not only as a hole transporter but also as a good…
Abstract BACKGROUND: The kinetics of the thermal decomposition of cellulosic materials is of interest from the viewpoint of flame retardancy for safety, optimization of incineration processes and reducing energy production from fossil sources and associated pollution. One essential step in these processes is the therm…
Solid state systems for hydrogen storage continue to be the focus of considerable international research, driven to a large extent by technological demands, especially for mobile applications. Density functional theory (DFT) has become a valuable tool in this effort. It has greatly expanded our understanding of the pr…
The early-stage coalescence of two sessile drops is investigated theoretically and experimentally. The coalescence of small sessile drops of diethylene glycol on silicon wafer is induced either by condensation or syringe deposition. The bridge geometry in directions parallel and perpendicular to the substrate, the bri…
PURPOSE: To significantly enhance tumor MR imaging by using a contrast agent combining three components -- a long-circulating liposome, liposomal membrane-incorporated polychelating amphiphilic polymer heavily loaded with gadolinium, and cancer-specific monoclonal antibody 2C5 attached to the liposome surface. MATERIA…
The local structures of the inorganic component of selected organic–inorganic perovskites (OIPs) are studied by analyzing the X-ray pair distribution function. Whereas the long-range structure of each perovskite is the untilted Pm 3̅ m phase, all the OIPs showed significant internal distortion of the octahedra. Varyin…
Although there is plenty of research work being done in the field of carbon nanotube reinforced composite materials, no special attention has been paid to the factors of the polymer's repeat unit arrangement and conformation. In this paper we use molecular dynamics simulation based on a Condensed-phase Optimized Molec…
Using coordinate transformation stated earlier by Pendry et al. [Science 312, 1780 (2006)], we deduced the material parameter equation for elliptic cylinder cloaks and reported the numerical simulations as well. The theoretical and numerical results indicate that, an elliptic cylinder cloak, which is constructed with…
Abstract A composite membrane, which comprises of one fluorite oxide phase (Ce 0.8 Gd 0.2 O 1.9 ) for oxygen ionic transport and one perovskite oxide phase (Gd 0.2 Sr 0.8 FeO 3−δ ) for both oxygen ionic and electronic transport, was investigated. XRD results revealed that the two oxides are compatible and showed good…
Abstract A system of poly(lactide‐co‐glycolide)‐methoxy poly(ethylene glycol) (PLGA‐mPEG) nanoparticles is developed to formulate superparamagnetic iron oxides (IOs) for magnetic resonance imaging (MRI). This system improves the imaging effects, increases the half‐life of the IOs in circulation, and reduces their side…
Magnetic structures in an antiperovskite system, ${\mathrm{Mn}}_{3}{\mathrm{Cu}}_{1\ensuremath{-}x}{\mathrm{Ge}}_{x}\mathrm{N}$, with a large magnetovolume effect above $x=0.15$ have been studied by neutron powder diffraction measurement. The present neutron study revealed that not only a cubic crystal structure but a…
Thermal behaviors of wheat straw flour (WF) filled thermoplastic compositeswere measured applying the thermogravimetric analysis and differential scanningcalorimetry. Morphology and mechanical properties were also studied using scanningelectron microscope and universal testing machine, respectively. Presence of WF int…
Ab initio methods allow a more or less straightforward prediction of numerous physical properties of solids, but require the knowledge of their crystal structure. The evolutionary algorithm USPEX, developed by us in 2004-2006, enables reliable prediction of the stable crystal structure without relying on any experimen…