Materials Literature
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A general purpose micromechanics analysis that discretely models the yarn architecture within the textile repeating unit cell was developed to predict overall, three-dimensional, thermal and mechanical properties, damage initiation and progression, and strength. This analytical technique was implemented in a user-frie…
We investigate the thermal behavior of the (111) surface of silver, using phonon frequencies obtained from ab initio total energy calculations, and anharmonic effects treated within a quasiharmonic approximation. Our results reproduce the experimental observation of a large and anomalous increase in the surface therma…
Parallel algorithms for ab initio calculations of vibrations modes of solids are presented and implemented under PVM. Load balancing and communication problems are dealt with in order to increase parallelism efficiency. For accurate time measurements, synchronisation of processes must be achieved. The results obtained…
The temperature dependence of the optical-absorption edge (Urbach edge) of GaAs is measured in semi-insulating and n-type GaAs (n=2×1018 cm−3) over the temperature range from room temperature to 700 °C. Both the optical absorption and the temperature are measured using a diffuse reflectance technique. The characterist…
A comparative study is reported of transient photoconductivity and ac conductivity in the liquid-crystalline columnar hexagonal (${\mathit{D}}_{\mathit{h}}$) phase of pure and p-doped hexakis(n-hexyloxy)triphenylene. In both materials, charge-carrier transport is dispersive, and the measured carrier mobilities along t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPotentiometric, Calorimetric, and Solution NMR Studies of a Tridentate Ligand Which has a Marked Preference for Formation of Bis(ligand) versus Mono(ligand) Lanthanide Complexes and Which Exhibits High Selectivity for Heavier LanthanidesP. Caravan, Tomas Hedlund, Shuang Liu,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRational Design of the First Nonspherical Dendrimer Which Displays Calamitic Nematic and Smectic Thermotropic Liquid Crystalline PhasesVirgil Percec, Peihwei Chu, Goran Ungar, and Jianping ZhouCite this: J. Am. Chem. Soc. 1995, 117, 46, 11441–11454Publication Date (Print):No…
Edible films and coatings based on milk proteins have been developed to be used as a protective layer on foods or between food components. The most important functionalities of an edible film or coating include control of mass transfers, mechanical protection, and sensory appeal. Control of mass transfers involves pre…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the Mechanism of Chemical Enhancement in Surface-Enhanced Raman ScatteringAlan Campion, J. E. Ivanecky III, C. M. Child, and Michelle FosterCite this: J. Am. Chem. Soc. 1995, 117, 47, 11807–11808Publication Date (Print):November 1, 1995Publication History Published online…
Plasma treatment of silicone surfaces is a useful, environmentally-sound method of increasing wettability to improve adhesion. A thin, wettable silica-like layer is produced with various plasma gases such as argon, helium, oxygen and nitrogen. However, in each case the surfaces gradually recover their hydrophobicity.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Plasmon Resonance Permits in Situ Measurement of Protein Adsorption on Self-Assembled Monolayers of Alkanethiolates on GoldMilan Mrksich, George B. Sigal, and George M. WhitesidesCite this: Langmuir 1995, 11, 11, 4383–4385Publication Date (Print):November 1, 1995Publ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Characterization of Inclusion Complexes of Poly(propylene glycol) with CyclodextrinsAkira Harada, Miyuko Okada, Jun Li, and Mikiharu KamachiCite this: Macromolecules 1995, 28, 24, 8406–8411Publication Date (Print):November 1, 1995Publication History Published…
The literature on aqueous thermogalvanic cells has been reviewed. Wherever possible, the power conversion efficiency, , relative to that of a Carnot engine operating between the same temperatures and the figure of merit, , of the cell have been extracted from the literature data in order to assess the cell's possible…
We report a detailed study of the size dependence of the ferroelectric transition in an ensemble of ${\mathrm{PbTiO}}_{3}$ nanoparticles produced by coprecipitation. The phase transition was monitored by dielectric measurements, variable temperature x-ray diffraction, and differential scanning calorimetry (DSC). Size…
Partial table of contents: Biomineralization and Biomimetic Chemistry. Biogenic Cadmium Sulfide Semiconductors. Biomimetic Approaches to Nanoscale Fabrication. Construction of Organized Particulate Films By The Langmuir--Blodgett Technique. Polyamino Acids As Antiscalents, Dispersants, Antifreezes, and Absorbent Gelli…
The strength, resorption rate, and biocompatibility of collagenous biomaterials are profoundly influenced by the method and extent of crosslinking. We compared the effects of two physical crosslinking methods, ultraviolet irradiation (UV) (254 nm) and dehydrothermal (DHT) treatment, on the mechanical properties and mo…
Abstract Edible films or coatings have provided an interesting and often essential complementary means for controlling the quality and stability of numerous food products. There are many potential uses of edible films (e.g. wrapping various products, individual protection of dried fruits, meat and fish, control of int…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLinear Hybrid Polymer Building Blocks: Methacrylate-Functionalized Polyhedral Oligomeric Silsesquioxane Monomers and PolymersJoseph D. Lichtenhan, Yoshiko A. Otonari, and Michael J. CarrCite this: Macromolecules 1995, 28, 24, 8435–8437Publication Date (Print):November 1, 199…
Elastic stability criteria are derived for homogeneous lattices under arbitrary but uniform external load. These conditions depend explicitly on the applied stress and reduce, in the limit of vanishing load, to the criteria due to Born, involving only the elastic constants of the crystal. By demonstrating the validity…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Hyperbranched and Star Polymers by a "Living", Self-Condensing Free Radical PolymerizationCraig J. Hawker, Jean M. J. Frechet, Robert B. Grubbs, and Julian DaoCite this: J. Am. Chem. Soc. 1995, 117, 43, 10763–10764Publication Date (Print):November 1, 1995Publi…