Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular hyperpolarizabilities of coumarin dyesChristopher R. MoylanCite this: J. Phys. Chem. 1994, 98, 51, 13513–13516Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inissue 1 December 1994https://pubs.acs.org/doi/10.1021/j1…
A theory has been developed to examine the depolarization effect on the ferroelectric transition of small ${\mathrm{BaTiO}}_{3}$ particles. To reduce the depolarization energy, a crystal would break up into domains of different polarization. In this study, we consider cubic particles with alternating domains separated…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBlock Copolymer "Crew-Cut" Micelles in WaterZhisheng Gao, Sunil K. Varshney, Stanislaus Wong, and Adi EisenbergCite this: Macromolecules 1994, 27, 26, 7923–7927Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inissue 1 December…
Abstract Porphyrin‐C 60 dyads in which the two chromophores are linked by a bicyclic bridge have been synthesized using the Diels‐Alder reaction. The porphyin singlet lifetimes of both the zinc (Pz n ‐C 60 ) and free base (P‐C 60 ) dyads, determined by time‐resolved fluorescence measurements, are ≦17 ps in toluene. Th…
Electron-beam-induced deposition of materials has been known for almost 40 years from contamination writing. It has developed into “additive lithography” with nanometer resolution employed in scanning electron microscopes, in dedicated lithography systems, in reducing image projection systems, and in scanning tunnelin…
The chemical inertness and corrosion resistance of a boron‐doped diamond thin film electrode, grown by chemical vapor deposition (CVD), have been studied during potential cycling (PC) for 2 h in a solution of at 50°C. Similar experiments were performed on highly ordered pyrolytic graphite (HOPG) and glassy carbon (GC)…
A myosin phosphatase was purified from chicken gizzard smooth muscle. The holoenzyme is a trimer and consists of 130,000-, 38,000-, and 20,000-Da subunits (in agreement with the results of Alessi et al.: Alessi, D., MacDougall, L. K., Sola, M. M., Ikebe, M., and Cohen, P. (1992) Eur. J. Biochem. 210, 1023-1035). The c…
The influence of chemical admixtures (superplasticizer-retarder) and active silica minerals (fraction less than 45 μm) in cement hydration, mechanical strength increase and variations of the physical properties of light weight mortars with partially zeolitized Cuban tuffs is evaluated.
Hydroxyapatite Ca5(PO4)3OH (HAp) is a crystalline phase which has several applications within the domain of special cements. This phase takes an important role in the cement reactions for the reconstruction of skeletal functions (medical domain). It is used also to improve properties of dental material. On the other h…
The use of low-emittance coating (low-E) glasses in Europe and the United States is not recent (they make use of them long since: 10-15years), nevertheless they are almost unknown in Spain, in all respects, in spite of being commercialized long since by different houses, specialists in these matters. We run into a lac…
Article Effect of Adhesion and Filler Composition on the Mechanical Response of a Polypropylene/[CaC03/Mica] Composite was published on December 1, 1994 in the journal Science and Engineering of Composite Materials (volume 3, issue 4).