Materials Literature
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A method which is able to produce different types of nano-structured materials, namely nano-particles, nano-structured surfaces and nano-porous membranes, from two-phase metallic alloys is reviewed. The new process first establishes nano-structures in the bulk alloy and then separates them by selective phase dissoluti…
We report heat capacity $({C}_{p})$ measurements on high-quality single crystals of hexagonal $\mathrm{Y}\mathrm{Mn}{\mathrm{O}}_{3}$, a ferroelectric and frustrated triangular antiferromagnetic (AF) compound. The obtained values of the critical exponent $\ensuremath{\alpha}$ and amplitude ratio ${A}^{+}∕{A}^{\ensurem…
We study the electronic structure of the carbon nanotube theoretically by the first-principles techniques using the local-density approximation (LDA) with the many-body correction in the GW approximation. We find that the (9,0) tube is gapful irrespective of naive expectation from the graphene band structure. All of t…
UV-curable chitosans (UVCC-7-10) were synthesized using less-toxic agents. The UVCC-7 was completely cured by UV spot irradiation for 4 s. The UVCC-7 was implanted into murine subcutaneous tissues, and the response to the implantation was observed by histological examination at 7 days after implantation. In the histol…
$X$-band electron paramagnetic resonance spectra were recorded for ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{O}$ films grown by pulsed laser deposition and a single crystal for comparison. For different Mn concentrations in ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{O}$ films we performe…
Poly(methyl methacrylate)/clay nanocomposites have been prepared using a pseudo-dispersion polymerization of MMA monomer in the presence of fluorinated surfactant-modified clay (10F-clay) in supercritical carbon dioxide. The nanocomposites are characterized by scanning electron microscopy, transmission electron micros…
Collagen, as a major constituent of human connective tissues, has been regarded as one of the most important biomaterials. As a coating moiety on Ti hard-tissue implants, the collagen has recently attracted a great deal of attention. This article reports the effects of fibrillar assembly and crosslinking of collagen o…
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…