Materials Literature
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The Taylor-phase complex intermetallic compound $T\text{\ensuremath{-}}{\mathrm{Al}}_{3}\mathrm{Mn}$, its solid solutions with Pd and Fe, $T\text{\ensuremath{-}}{\mathrm{Al}}_{3}(\mathrm{Mn},\mathrm{Pd})$ and $T\text{\ensuremath{-}}{\mathrm{Al}}_{3}(\mathrm{Mn},\mathrm{Fe})$, and the related decagonal $d\text{\ensurem…
Interactions in nanoparticle assemblies play an important role in modulating their interesting magnetic and optical properties. Controlling and fixing the distance between nanoparticles is therefore crucial to the development of next-generation nanodevices. Here, we show that the interparticle distance in two-dimensio…
A theoretical study was performed to understand the structures and properties of C60-gold nanocontacts. In this investigation, C60 was sandwiched between gold clusters. In the studied clusters, the number of Au atoms varied from 2 to 8 on each side of C60. Molecular geometries of the investigated complexes were optimi…
We study the emission properties of close-packed films of PbS nanocrystals that show emission in the infrared. In time resolved photoluminescence measurements, we observe a fast decay time of $\ensuremath{\sim}400\phantom{\rule{0.3em}{0ex}}\mathrm{ps}$ and a slow component between 20 and $80\phantom{\rule{0.3em}{0ex}}…
This study provides new data for interpreting plasmon coupling in finite two-dimensional arrays, which are important in plasmonic devices and sensing applications. Finite square arrays of cylindrical silver nanoparticles with two different nanoparticle diameters (339 and 163 nm) and two different interparticle spacing…
Abstract Extruded collagen fibers constitute a promising biomimetic scaffold for tissue engineering applications. In this study, we compared the structural, thermal, and mechanical properties of fibers produced from either NaCl or poly(ethylene glycol) with a number‐average molecular weight of 8000 (PEG 8K), the only…
The fluorescence spectra of individual semiconducting single-walled carbon nanotubes embedded in polymer films were measured during the application of controlled stretching and compressive strains. Nanotube band gaps were found to shift in systematic patterns that depend on the (n,m) structural type and are in excelle…
BACKGROUND: We have developed magnetite nanoparticles conjugated with cationic liposomes (MCLs) to induce intracellular hyperthermia with exposure to an alternating magnetic field (AMF). We have previously demonstrated the hyperthermic effect of MCLs against certain types of malignant tumor cells in vivo. Here, we exa…
The electrochemical detection of chemical warfare agent (CWA) mimics was explored using multiwalled carbon nanotubes (MWCNTs) on indium tin oxide (ITO) surfaces in connection with ferrocene-amino acid conjugates. Various ferrocene-amino acid conjugates were synthesized and utilized as the recognition layer for the det…
Free vibrations of a double-walled carbon nanotube (DWNT) are studied. The inner and outer carbon nanotubes are modeled as two individual elastic beams interacting each other by van der Waals forces. An original method is proposed to calculate the first seven order resonant frequencies and relative vibrational modes.…
Pretargeting of receptors is a useful approach in molecular imaging and therapy to reduce background noise or toxicity and enhance selectivity. In this study a three-step pretargeting approach that includes a biotinylated antibody, avidin/streptavidin, and a biotinylated imaging agent is described. A PAMAM dendrimer g…
Conducting polyaniline 5-sulfosalicylate nanotubes and nanorods were synthesized by the template-free oxidative polymerization of aniline in aqueous solution of 5-sulfosalicylic acid, using ammonium peroxydisulfate as an oxidant. The effect of the molar ratio of 5-sulfosalicylic acid to aniline on the molecular struct…
The paper describes theoretical and computational studies associated with the interface elastic properties of noncoherent metallic bicrystals. Analytical forms of interface energy, interface stresses, and interface elastic constants are derived in terms of interatomic potential functions. Embedded-atom method potentia…
The pyrolysis of cylinder-forming samples of the diblock copolymer polystyrene-block-poly(ferrocenylethylmethylsilane) (PS-b-PFEMS) in bulk and in thin films has confirmed that these materials are useful for the generation of semi-ordered arrays of C/SiC ceramics containing Fe nanoparticles which are derived from the…
Silica nanoparticles and nanostructures provide an unprecedented materials platform to accomplish many nanoscale functions, and they offer a practical method for introducing multiple functionalities into the same nanoparticle. Much of the advances in silica nanochemistry are based on the condensation of tetraethylorth…
At least five crystalline phases can be found in the CaSO 4 −H 2 O system, which are gypsum CaSO 4 ·2H 2 O, the subhydrates α- and β-CaSO 4 ·0.5H 2 O, and the soluble and insoluble anhydrite CaSO 4 . The formation of these five phases in the CaSO 4 −H 2 O system and their transformations were investigated by in situ t…
New layered compounds, (V 0.5 Cr 0.5 ) 3 AlC 2 , (V 0.5 Cr 0.5 ) 4 AlC 3 , and (V 0.5 Cr 0.5 ) 5 Al 2 C 3 were synthesized by reactive hot pressing V, Cr, Al, and graphite powders. The crystal structures of these new phases were determined using a combination of X‐ray diffraction and scanning transmission electron mic…
We report the chemistry and photophysics of atomic gold and silver particles in inorganic glasses. By synchrotron irradiation of gold-doped soda-lime silicate glasses we could create and identify unambiguously the gold dimer as a stable and bright luminescing particle embedded in the glassy matrix. The gold dimer spec…
Surface passivation of nanocrystals with suitable organic or inorganic materials is key to improving the photoluminescence (PL) efficiency and stability of nanocrystals. Although the hot-injection organometallic approach is a powerful tool to achieve different kinds of core/shell structures, direct synthesis of such s…
Alternating Langmuir−Blodgett multilayers containing a metal-to-ligand charge-transfer chromophore based on {Ru II (NH 3 ) 5 } 2+ show redox-switching of the second harmonic generation from a 1064 nm laser.