Materials Literature
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A novel method for preparing a fully integrated nanotube composite material through the use of functionalized multi-walled carbon nanotubes (MWNTs) is presented in this study. The functionalization of MWNTs was performed via plasma treatment; subsequently, maleic anhydride (MA) was grafted onto the MWNTs (CNTs-MA). Na…
With good pricing, high strength, as well as corrosion resistance, stainless steel is a widely used and popular choice for many applications as a rust resistant material, however many types of corrosion attack stainless steel, such as pitting and crevice corrosion, intergranular corrosion, stress-corrosion cracking, h…
Our approach was to encapsulate the model protein ribonuclease A (RNase A) in mesoporous silica MCM-48 (Mobil Composition of Matter No. 48) with glasslike wall structure and well-defined pores to create a confined hydrophilic microenvironment. The differential scanning calorimetric (DSC) method was employed to evaluat…
The most common representative of these biopolymers is poly-3-hydroxybutyrate (PHB). PHB constitutes a rather stiff and brittle material with a low extension to break [5-7]. These mechanical properties can be enormously enhanced by incorporation of different comonomers into the PHB matrix. This results in co-and terpo…
Acknowledgments ........................................................................................................................ 180 Abbreviations and Basic Definitions............................................................................................ 180 References ....................................…
Defects in diamond are no longer just an interesting curiosity in a material used either for its hardness in mechanical applications or unsurpassed allure as a gem. Recent and continuing developments in diamond synthesis have focused attention towards the possible exploitation of the amazing combina...
Abstract Sputter depth profiling using Auger electron spectroscopy (AES) is influenced by the electron backscattering contribution to the AES intensity. When approaching an interface between two components having a different backscattering factor, the shape of the profile is characteristically distorted. This distorti…
Ab initio psuedopotential calculations have been performed for the electronic structure and lattice dynamics of ${\mathrm{Nb}}_{3}\mathrm{Sn}$. It is found that electronic states near the Fermi level show anomalous dispersion. In agreement with the experimental measurement by Pintschovius et al. [Phys. Rev. Lett. 54,…
Abstract Orthoconic antiferroelectric liquid crystals (AFLCs) having 45° tilt angle have been proposed to overcome the problem of reduced contrast usually exhibited by regular antiferroelectric displays. However, the pitch of the helix induced by chirality is customarily short in existing orthoconic materials, making…
Six penta-block amphiphiles of the general structure A-B-A-B-A or B-A-B-A-B (where A = a hydrophilic ether and B = a hydrophobic carbon chain) were synthesized and examined via water solubilities, surface activities, cloud points, and self-diffusion coefficients (the latter obtained by Fourier transform pulsed gradien…
Two new coordination polymers,{–M(hydeten) 2 –NC–Pd(CH) 2 –CN} n , [M = Ni and Cu, hydeten; N-(2-hydroxyethyl)-ethylenediamine)], have been synthesized and their elemental, thermal and spectroscopic (IR and UV-vis) properties have been studied. The crystal structure analysis of the Cu–Pd complex has indicated a polyme…
The paper evaluates the impact that the relationship between purely rotational and alternating losses has on the computation of core losses in induction motors. At frequencies other than 50 Hz, the analysis is simplified if statistical loss theory is considered, as discussed in the paper. The paper outlines a practica…
Saccharopine dehydrogenase [N6-(glutaryl-2)-L-lysine:NAD oxidoreductase (L-lysine forming)] catalyzes the final step in the alpha-aminoadipate pathway for lysine biosynthesis. It catalyzes the reversible pyridine nucleotide-dependent oxidative deamination of saccharopine to generate alpha-Kg and lysine using NAD+ as a…
The high-pressure phase of gibbsite has been studied by in situ single crystal X-ray diffraction method and molecular dynamics (MD) simulation at 3.0 GPa. The crystal structure of the high-pressure phase, η -Al(OH) 3 , was successfully determined by direct methods based on the intensities of X-ray diffraction. The spa…
The magnetic properties of small diameter semiconducting single-walled carbon nanotubes have been recently predicted to depend sensitively on structural details that can be ignored for larger diameters. We confirm this dependence by directly measuring the magnetic alignment of several species of carbon nanotubes in aq…
The ability of light to alter/stabilize a particular thermodynamic phase is a power tool to investigate condensed matter from a new dimension. This field of photoinduced phase transitions is currently an important area of research. Being elastically soft and having subtle changes between its many phases a liquid cryst…
From our investigations of natural composite materials such as abalone shell and bone we have learned the following. (1) Nature is frugal with resources: it uses just a few per cent glue, by weight, to glue together composite materials. (2) Nature does not avoid voids. (3) Nature makes optimized glues with sacrificial…
The adsorption of flexible collagen I triple helices with lengths of 8 nm in aqueous solution on a partially hydroxylated rutile layer (pH = 7.4) is modelled by classical molecular dynamics simulation with trajectories of up to 5 ns lengths. The carboxyl groups of glutamic and aspartic acids form hydrogen bonds with s…
Morphologies and bridging properties of graft copolymers in the bulk state were studied by using a real-space algorithm of self-consistent field theory in two dimensions. The phase transition from cylindrical to lamellar phase can be triggered by changing the position of graft points and the number of branches. The fr…
What you have and what you get are not necessarily the same: for example, solid enantiomerically enriched proline provides solutions of constant ee, 99 % in CHCl3 and 50 % in DMSO. The Highlight discusses recent papers that give insight into the behavior of enantioenriched proline under heterogeneous conditions which…