Materials Literature
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A polaron model proposed as a possible mechanism for nonlinear conductance [Galperin M, Ratner M A, and Nitzan A 2005 Nano Lett. 5 125-30] is revisited with focus on the differences between the weak and strong molecule-lead coupling cases. Within the one-molecular level model we present an approximate expression for t…
We present an Adaptively Biased Molecular Dynamics (ABMD) method for the computation of the free energy surface of a reaction coordinate using non-equilibrium dynamics. The ABMD method belongs to the general category of umbrella sampling methods with an evolving biasing potential, and is inspired by the metadynamics m…
It was shown in the recent experiments that the hybrid organic/inorganic resonant structures can provide a flexible materials platform aimed at the design of novel light emitting devices. The applications of hybrid structures for photovoltaic solar cell can also be useful. We pay attention in this note that the resona…
Abstract This study describes the preparation and characterization of nanofibrous mats obtained by electrospinning poly(ethylene terephthalate) (PET) solutions in trifluoroacetic acid/dichloromethane (TFA/DCM). Special attention was paid to the effect of polymer concentration and solvent properties on the morphology,…
We report a direct observation of the intrinsic magnetization behavior of Au in thiol-capped gold nanoparticles with permanent magnetism at room temperature. Two element specific techniques have been used for this purpose: X-ray magnetic circular dichroism on the L edges of the Au and 197Au Mössbauer spectroscopy. Bes…
Ferromagnetic order can be induced in $\mathrm{La}\mathrm{Co}{\mathrm{O}}_{3}$ (LCO) thin films by epitaxial strain. Here, we show that the magnetic properties can be ``tuned'' by epitaxial strain imposed on LCO thin films by the epitaxial growth on various substrate materials, i.e., (001) oriented $\mathrm{Sr}\mathrm…
Increasing interest in high-quality food products with increased shelf life and reduced environmental impact has encouraged the study and development of edible and/or biodegradable polymer films and coatings. Edible films provide the opportunity to effectively control mass transfer among different components in a food…
Applying a longitudinal force to a rod will cause its components to deform according to their relative strengths. Ab initio computations show that, in staffane, which has a Young's modulus 5 times larger than that of the hardest known material in nature −(diamond), the bicyclic unit resists deformation much more than…
Abstract A series of bismaleimides was synthesized from bis(4‐amino‐3, 5‐dimethylphenyl) (X) phenyl methane (X = 3′chloro, 3′‐bromo, 3′‐benzyloxy, 4′‐chloro, 4′‐fluoro) and maleic anhydride. The bismaleimides were subsequently polymerized with various diamines by Michael addition to yield novel polyaspartimides. All t…
Via simulations, we demonstrate a simple route for forming defect-free patterns in a photosensitive, immiscible ABC blend. The first pattern is established by irradiating the sample through a mask, which serves to pin the C regions and thereby promotes the self-assembly of A and B into ordered domains. When the mask i…
We have examined the relaxation that occurs in the supercooled plastic crystalline phases of pentachloronitrobenzene (PCNB), dichlorotetramethylbenzene (DCTMB), trichlorotrimethylbenzene (TCTMB) along with some of their deuterated samples, and 1-cyanoadamantane (CNADM) in the presence of intentionally added dopants. T…
We present three different preparation methods for CdSe colloidal nanoparticles that, when carried out into the Ostwald ripening regime, lead to the development of complex spectral patterns resulting from the overlap of several distinct components corresponding to different kinds of nanoparticles coexisting in solutio…
Abstract This study reports the X‐and Ku‐band microwave transmittance, reflectance, conductivity, and shielding effectiveness of nano structured electropolymerised polyaniline (PANI) thin films on stainless steel. Waveguide reflectometer method has been used for the microwave studies. Microwave conductivity varies bet…
Abstract Archaeological silver objects are often found to be embrittled to some extent. Using light and scanning electron microscopy techniques, X‐ray diffraction and AES, the causes of this embrittlement were studied on a silver artefact buried for more than 1000 years in soil. This investigation revealed the presenc…
The azobenzene moiety, well-known not only for its reversible cis-to-trans photoisomerization but also as a hapten, does not induce antibodies on its own, but it reacts with antibodies raised against conjugates with protein carriers. Hence we selected azobenzene dye as an indicator to assess the possibility of having…
Abstract Ten types of rare earth (RE) compounds modified carbon black (HAF‐RE) were prepared using chemical‐deposit method, then HAF‐RE were mixed with natural rubber latex to prepare HAF‐RE filled powdered natural rubber [P(NR/HAF‐RE)] by a carbon black/rubber latex coagulation method. It is found that most of the P(…
Novel one-dimensional (1D) nanostructures of rare earth complexes (europium methacrylate (Eu(MA)(3))) have been prepared from the precursor of irregularly shaped Eu(MA)(3) powder in ethanol solvent without the assistance of an added surfactant, catalyst, or template. These hexagonal-shaped complex nanowires have diame…
In lysine biosynthesis, dihydrodipicolinate reductase (DHDPR) catalyses the formation of tetrahydrodipicolinate. Unlike DHDPR enzymes from Escherichia coli and Mycobacterium tuberculosis, which have dual specificity for both NADH and NADPH as co-factors, the enzyme from Thermotoga maritima has a significantly greater…
High Resolution Image Download MS PowerPoint Slide A novel method of determining nanocluster sizes and size distributions using high-angle annular dark-field imaging in scanning transmission electron microscopy is described. This method is demonstrated for MgO-supported [Os 10 C(CO) 24 ] 2- clusters formed by treating…
Alpha-helices are the most common secondary structures found in globular proteins. In this report, we analyze the stereochemical and sequence properties of helix-X-helix (HXH) motifs in which two alpha-helices are linked by a single residue, in search of characteristic structures and sequence signals. The analysis is…