Materials Literature
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We describe an electrochemical-based approach to create vertically aligned nanotube arrays on substrates. Initially, nanoporous anodic alumina films are used as templates to electrodeposit nanorods, and then the alumina templates are removed and nanotube arrays are electrodeposited using the nanorod arrays as template…
The objective of this study is to develop a new method of manufacturing glass fiber reinforced epoxy composites and to quantitatively show that the properties of such a new material are superior to that of a conventional fiber reinforced polymer composite of the same material base composition. To achieve this objectiv…
In this paper, we present models of $\mathrm{Ge}\text{\ensuremath{-}}\mathrm{Se}$ glasses heavily doped with Ag obtained from ab initio simulation and study the dynamics of the network with an emphasis on the motion of ${\mathrm{Ag}}^{+}$ ions. The models are analyzed with partial pair correlation functions, static st…
Abstract Cubic [Ru 2 (O 2 CMe) 4 ] 3 [Cr(CN) 6 ] prepared from water has two interpenetrating lattices and exhibits anomalous magnetic hysteresis, saturation magnetization, out‐of‐phase alternating current (AC) susceptibility, χ″( T ), and zero‐field‐cooled/field‐cooled temperature‐dependent magnetization data with re…
A two-step solvothermal synthetic method was used for preparation of a one-dimensional compound, [{Mn(en) 2 } 2 ( μ -en)( μ -Sn 2 S 6 )] ∞ ( 1 ), in which the Mn(II) ions are bridged by thiostannate [Sn 2 S 6 ] 4- anions and linear coordinating ethylenediamine (en) molecules. At first, a clear yellow solution containi…
We perform isothermal-isobaric first-principles molecular-dynamics simulations to investigate the dynamics of liquid silicon (l-Si) under pressure. We find that the self-diffusion coefficient increases with increasing pressure in the deeply supercooled state. This anomalous diffusivity is attributed to the formation o…
This paper addresses equivalent circuit and magnetic saturation issues associated with synchronous machine modeling. In the proposed synchronous machine model, the rotor equivalent circuits are replaced by arbitrary linear networks. This allows for elimination of the equivalent circuit parameter identification procedu…
Flux boundary conditions are interesting in a number of contexts ranging from multiscale simulations to simulations of molecular hydrodynamics in nanoscale systems. Here we introduce, analyze, and test a general scheme to impose boundary conditions that simultaneously control the momentum and energy flux into open par…
Complete and highly redundant data sets were collected at different wavelengths between 0.80 and 2.65 A for a total of ten different protein and DNA model systems. The magnitude of the anomalous signal-to-noise ratio as assessed by the quotient R(anom)/R(r.i.m.) was found to be influenced by the data-collection wavele…
Specific radiation damage can be used to solve macromolecular structures using the radiation-damage-induced phasing (RIP) method. The method has been investigated for six disulfide-containing test structures (elastase, insulin, lysozyme, ribonuclease A, trypsin and thaumatin) using data sets that were collected on a t…
Chitosan nanobead encapsulation of quantum dots (QDs) produces water-soluble, stable fluorescent markers for biomedical imaging. As shown in the Figure, derivatization of QDs with 3-mercaptopropionic acid (3MPA) produces a negatively charged surface to which positively charged chitosan is electrostatically attracted.…
The nitrogen substitution in carbon materials is investigated theoretically using the density functional theory method. Our calculations show that nitrogen substitution decreases the hydrogen adsorption energy if hydrogen atoms are adsorbed on both nitrogen atoms and the neighboring carbon atoms. On the contrary, the…
In this study, it is found that as-prepared gold nanorods can be linked to each other in an end-to-end way by using cysteine as a molecular bridge. Both transmission electron microscopy and UV-visible optical spectroscopy demonstrated the uniaxial assembly of the gold nanorods. The controlled addition of cysteine into…
Thin films of indium tin oxide [(ITO), ${\mathrm{In}}_{2}{\mathrm{O}}_{3}:\mathrm{Sn}$] have been grown by reactive electron beam deposition. Annealing in ultrahigh vacuum and, subsequently, in situ room temperature scanning tunneling microscopy (STM) and spectroscopy have been carried out. STM images before annealing…
Collagen is a natural biomaterial with excellent biocompatibility. However, unprocessed collagen has low stability and weak mechanical strength, which limits its application in tissue engineering. The current study aimed to improve the physicochemical properties of collagen scaffolds by using photochemical crosslinkin…
Abstract We present new hybrid organic/inorganic materials dedicated to heterogeneous catalysis. The systems are obtained by the polymerization of a high internal phase reverse emulsion (the so‐called polyHIPE porous materials) and have been further functionalized with various organic groups in order to promote the gr…
The isomerization behaviors of 2-(phenylazo)imidazole (Pai-H) and 1-N-methyl-2-(phenylazo)imidazole (Pai-Me) have been investigated. The crystal structure of trans-Pai-Me was determined, revealing that key structures around the azo group are nearly identical among azobenzene, Pai-H, and Pai-Me. Pai-Me undergoes revers…
In this paper, PRAM (phase-change memory), exploiting new memory materials called chalcogenides, is introduced. The reliability issues for high-density commercial memory products such as disturbance immunity, endurance, and data retention are addressed and evaluated by using a 64 Mb PRAM with 0.12 /spl mu/m technology…
A thermodynamically consistent C1 microkinetic model is developed for methane partial oxidation and reforming and for oxygenate (methanol and formaldehyde) decomposition on Rh via a hierarchical multiscale methodology. Sensitivity analysis is employed to identify the important parameters of the semiempirical unity bon…
G4-, G5-, and G6-PAMAM dendrimers were functionalized with mixtures of mannose and glucose in varying ratios, and the relative affinities of these compounds for Concanavalin A (Con A) were evaluated using the hemagglutination assay. As the ratio of mannose to glucose increases, the relative activity in the hemagglutin…