Materials Literature
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The self-assembly, by means of a slippage procedure, of three novel rotaxanes incorporating, respectively, one, two and three bisparaphenylene-34-crown-10 macrocyclic components and a single branched component, consisting of three bipyridinium units attached covalently to a 1,3,5-trisubstituted benzene central core an…
We study certain approximate solutions of a system of equations formulated in an earlier paper (Physica D 43, 44-62 (1990)) which in dimensionless form are $$u_t + gamma w(phi)_t = abla^2u,,$$ $$alpha epsilon^2phi_t = epsilon^2abla^2phi + F(phi,u),,$$ where $u$ is (dimensionless) temperature, $phi$ is an order paramet…
A p-type diamond metal semiconductor field-effect transistor (MESFET) structure, utilizing a boron pulse-doped layer as the conducting channel, has been successfully fabricated. The pulse-doped structure consists of an undoped diamond buffer layer, a highly doped thin diamond active layer, and an undoped diamond cap l…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNO Reduction by Activated Carbons. 4. Catalysis by CalciumM. Jose Illan-Gomez, Angel Linares-Solano, Ljubisa R. Radovic, and Concepcion Salinas-Martinez de LeceaCite this: Energy Fuels 1995, 9, 1, 112–118Publication Date (Print):January 1, 1995Publication History Published o…
Experimental evidences of both weak and strong confinement regimes are reported on CdS nanocrystals embedded in a sodium borosilicate glass matrix. A method, based on the sol-gel technique, is used for the preparation of CdS-activated glass. This route is capable of providing nanocrystals covering a wide range of radi…
Introduction: proteins at interfaces - an overview, John L. Brasch and Thomas A. Horbett. Part 1 Theory and molecular mechanisms of protein adsorption: reversibility and the mechanism of protein adsorption, Willem Norde and Charles A. Haynes logarithmic growth of protein films, Simon Alaeddine and Hakan Nygren compara…
The thermodynamical properties, structure and rheology of laponite dispersions have been studied as a function of solid fraction and ionic strength. The dispersions undergo a transition from Newtonian liquid to viscoelastic solid without phase separation. The increase of the ionic strength shifts the transition to low…
During the last decade, solidification modeling has known a sustained development effort, supported by academic as well as industrial research. The driving force behind this undertaking was the promise of predictive capabilities that will allow process and material improvement. The most significant recent rogress has…
The solid state structure of the fluorinated 1,2,3,5-dithiadiazolyl radical [p-NCC6F4[graphic omitted]]· is reported; it is the first dithiadiazolyl radical to retain its paramagnetic character in the solid state.
The structure of the boundary region between a metal and a solution (the so-called electrical double layer) depends on the chemical nature of the metal and of the solvent, the type and amount of solute, and the structure of the metal surface. This article is focussed on the effect of varying the crystallographic orien…
The diffusional coherency strain theory and its implications for chemically induced migration of liquid films and grain boundaries are reviewed and critically examined. The critical experiments in metals and oxides show the validity of this theory. The observed characteristics of this phenomenon: misfit dislocations a…
A new type of experiment involving temperature-variable in situ(one-dimensional)27Al MAS NMR studies, in which the sample is heated and studied directly in the NMR tube, has been developed. In the particular case chosen for study, the thermal conversion of the layered double hydroxide Mg6Al3.4(OH)18.82(CO3)1.5(NO3)0.3…
Abstract The dispersions of both reactive and nonreactive polymer‐polymer blend systems achieved in three different mixers are compared. The dispersions are prepared using an industrial scale twin‐screw extruder, a laboratory internal mixer, and a miniature cup and rotor mixer. The morphology development in the three…
The role of hydrogen bonds in the obtention of magnetic molecular materials is investigated in a purely organic openshell molecular solid. The structural and magnetic properties of the 2-(4-hydroxyphenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-yloxyl 3-oxide radical (1) are studied in detail. The intermolecular h…
The three-dimensional structure of a collagen fibrillar network was examined by using a cell-maceration/SEM method combined with measuring the breaking strength of rainbow trout, yellowtail, and tiger puffer muscles. Rainbow trout and yellowtail muscles were tenderized during storage, but tiger puffer muscle showed no…
The paper describes a procedure for the representation of hysteresis in the laminations of power transformers in the simulation of electromagnetic transient phenomena. The model is based on the recognition that in today's iron cores the hysteresis loops are narrow and therefore the modeling details are only important…
A new model has been developed for hydrogen retention and trapping in and release from graphite. Two different regions in the graphite with different hydrogen transport and trapping behaviors are distinguished, the bulk region within, and the surface region on graphite crystallites. The model incorporates new experime…
The complex [(bpy)2Ru(tpphz)]2+(tpphz = tetrapyridophenazine), is obtained by reaction of [(bpy)2Ru(phendione)]2+with 5,6-diamino-1,10-phenanthroline; upon reaction with [(bpy)2Ru(Me2CO)2]2+, the fully conjugated dimer [(bpy)2Ru(tpphz)Ru(bpy)2]4+ is obtained.
Thin films of Ti-rich Ti–Ni were prepared by sputtering. The sputter-deposited films were annealed at three different temperatures of 773, 873 and 973 K for three different times of 1, 10 and 100 h in order to crystallize them. After the heat treatment, the shape memory behavior was examined with a thermomechanical te…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Structural Characterization of Two New Phases of Aluminum TrifluorideNorman Herron, David L. Thorn, Richard L. Harlow, Glover A. Jones, John B. Parise, Jaime A. Fernandez-Baca, and Thomas VogtCite this: Chem. Mater. 1995, 7, 1, 75–83Publication Date (Print):J…