Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereocomplex formation between enantiomeric poly(lactic acids). 9. Stereocomplexation from the meltHideto Tsuji and Yoshito IkadaCite this: Macromolecules 1993, 26, 25, 6918–6926Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published…
Laser ablation of metals is a new and very powerful method for preparation of surface-enhanced Raman scattering (SERS) active colloids. The method is characterized by its simplicity and versatility. Stable Ag, Au, Pt, Pd, and Cu colloids are prepared by ablation of the metal for ∼10 min in water and organic solvents.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance of paramagnetic metalloproteinsIvano Bertini, Paola Turano, and Alejandro J. VilaCite this: Chem. Rev. 1993, 93, 8, 2833–2932Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published inissue 1 December 1993htt…
The internal structure of ultrathin polymer films physisorbed to surface-modified Si wafers by electrostatic deposition of polyelectrolytes from aqueous solutions has been investigated by measuring the X-ray and neutron reflectivity from partially deuterated samples. For the first time it has been demonstrated that th…
Several aspects of the growth and departure of bubbles from a submerged needle are considered. A simple model shows the existence of two different growth regimes according to whether the gas flow rate into the bubble is smaller or greater than a critical value. These conclusions are refined by means of a boundary-inte…
Measurements of the Kapitza conductance ${\mathrm{\ensuremath{\sigma}}}_{\mathit{K}}$ made using a picosecond optical technique at temperatures between 50 and 300 K are presented for interfaces between metals and dielectrics. The Debye temperatures ${\mathit{FTHETA}}_{\mathit{D}}$ of the metals (Pb, Au, Al, and Ti) we…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIn situ synthesis of silver nanocluster in AOT reverse micellesChristophe Petit, Patricia Lixon, and Marie Paule PileniCite this: J. Phys. Chem. 1993, 97, 49, 12974–12983Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published inissue…
This review covers the literature through 1991 on nitric oxide catalysis as applied to automobile exhaust systems. Attention is given to the threeway catalyst system which simultaneously promotes the reduction of nitrogen oxides and the oxidation of carbon monoxide and hydrocarbons. These systems have been used on mos…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of two-dimensional nanostructures by direct intercalation of polymer melts in layered silicatesRichard A. Vaia, Hope Ishii, and Emmanuel P. GiannelisCite this: Chem. Mater. 1993, 5, 12, 1694–1696Publication Date (Print):December 1, 1993Publication Hi…
Exchange hardening of nanostructured two-phase systems composed of an aligned hard phase and a soft phase with high magnetization is investigated using an approach which yields analytic nucleation fields from the micromagnetic vector equation, and accounts for interactions between the soft regions. In suitable structu…
An algorithm has been developed for the automatic interpretation of a given set of observed reciprocal-lattice points. It extracts a reduced cell and assigns indices to each reflection by a graph-theoretical implementation of the local indexing method. All possible symmetries of the observed lattice compatible with th…
Polymers have played indispensable roles in the preparation of pharmaceutical products. Their applications range widely from material packaging to fabrication of the most sophisticated drug delivery devices. This chapter reviews various polymers used in pharmaceutics based on their applications.
The literature data on the methods of synthesis and the properties of naphthacenequinones and related compounds are surveyed. The tautomeric and photochromic transformations of naphthacenequinone derivatives are examined. The bibliography includes 158 references.
Abstract An algorithm which combines the techniques of numerical analysis and numerical simulation in the study of transient dynamic structural response is proposed. This is achieved by incorporating the ability to create new surfaces and separate fragments according to a defined failure criterion into a finite elemen…
Intercalation by atoms (Cs, K, Ba, Pt, Si, C,...) of a monolayer graphite film deposited on a metal (Ir, Re,...) is reviewed. Atoms with low ionization potential (Cs, K, Ba,...) form a monolayer film of the intercalate under the graphite layer, whereas atoms with high unionization potential (Pt, Si, C,...) form a thic…
Collagens are known to have wide biomedical applications. They are for hemostatic agent, blood vessel, heart valve, tendon and ligament, burn dressing, intradermal augmentation, drug delivery systems and so on ( 1 ). The denatured type collagen, gelatin, has also been used in medicine as plasma expander, wound dressin…
Polymers have played indispensable roles in the preparation of pharmaceutical products. Their applications range widely from material packaging to fabrication of the most sophisticated drug delivery devices. This chapter reviews various polymers used in pharmaceutics based on their applications.
A new nonthermoluminescent dosimetric technique was developed by using the afterglow response characteristic of alkali halide single crystals doped with europium ions. The afterglow luminescence decayed very slowly and its intensity was proportional to the radiation dose. The radiation dose was measured by the time in…
An apparent activation energy for CO desorption from (100) diamond surfaces exposed to atomic oxygen was determined by thermal desorption spectroscopy performed in ultrahigh vacuum and found to be equal to 45.0 kcal/mol. A minimum potential-energy reaction path was identified by semiempirical quantum chemical calculat…
The effect of hydrogen and oxygen surface termination atoms on the visible luminescence of porous Si was investigated for underlying physical mechanism. Atmospheric thermal treatment up to 1000 °C was carried out to study the functional relationship between the surface coverage and photoluminescence (PL). The results…