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Raman Spectra of Vateritic Calcium Carbonate
The Raman spectrum of polycrystalline vaterite is presented and compared to spectra of calcite and aragonite, the other two common CaCO3 polymorphs; Raman spectroscopy easily distinguishes between these three polymorphs. An important feature of the Raman spectrum of vaterite is splitting of both the ν1 and ν4 peaks. T…
Potential-Dependent Electron Injection in Nanoporous Colloidal ZnO Films
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPotential-Dependent Electron Injection in Nanoporous Colloidal ZnO FilmsP. Hoyer and H. WellerCite this: J. Phys. Chem. 1995, 99, 38, 14096–14100Publication Date (Print):September 1, 1995Publication History Published online1 May 2002Published inissue 1 September 1995https://…
A Real-Time Simultaneous Small- and Wide-Angle X-ray Scattering Study of In-Situ Deformation of Isotropic Polyethylene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Real-Time Simultaneous Small- and Wide-Angle X-ray Scattering Study of In-Situ Deformation of Isotropic PolyethyleneMichael F. Butler, Athene M. Donald, Wim Bras, Geoffrey R. Mant, Gareth E. Derbyshire, and Anthony J. RyanCite this: Macromolecules 1995, 28, 19, 6383–6393Pu…
Molecular Structure and Magnetic Properties of Acetato-Bridged Lanthanide(III) Dimers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Structure and Magnetic Properties of Acetato-Bridged Lanthanide(III) DimersAthanassios Panagiotopoulos, Theodoros F. Zafiropoulos, Spyros P. Perlepes, Evangelos Bakalbassis, Isabelle Masson-Ramade, Olivier Kahn, Aris Terzis, and Catherine P. RaptopoulouCite this: I…
Protein-Sized Quantum Dot Luminescence Can Distinguish between "Straight", "Bent", and "Kinked" Oligonucleotides
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProtein-Sized Quantum Dot Luminescence Can Distinguish between "Straight", "Bent", and "Kinked" OligonucleotidesRahina Mahtab, Jessica P. Rogers, and Catherine J. MurphyCite this: J. Am. Chem. Soc. 1995, 117, 35, 9099–9100Publication Date (Print):September 1, 1995Publication…
A database on electron‐solid interactions
Abstract Monte Carlo modeling of electron‐solid interactions requires a detailed and accurate supply of experimental data on which to base its physics and against which to test its predictions. To meet this need, a collection of data—comprising measurements of secondary and backscattered electron yields, electron stop…
Infrared absorption by the B nitrogen aggregate in diamond
Two approaches have been adopted in attempting to determine the strength of the one-phonon infrared absorption by the B nitrogen aggregate in diamond. On the one hand, we have heat treated purely type IaA specimens with known infrared absorption strengths (and thus also known nitrogen concentrations) to bring about pa…
Studies on Jute Composites—A Literature Review
Jute fiber is an important agricultural product. It is one of the most common natural fibers in Third World countries such as India, China, Bangladesh, etc. The jute industry has special importance in the economy of India and continues to be a major traditional earner of foreign exchange. However, it is facing tough c…
Reconciling ionic-transport properties with atomic structure in oxide glasses
Structural evidence for the microsegregation of alkalis in oxide glasses is reviewed and the implications for ionic transport, viz., nearest-neighbor hopping, cooperative and correlation effects, are considered. Distinctions are drawn between the hopping of alkalis in silicate glasses, where changes in the configurati…
Biosynthetically Directed Fractional 13C-labeling of Proteinogenic Amino Acids. An Efficient Analytical Tool to Investigate Intermediary Metabolism
Biosynthetically directed fractional 13C labeling of proteinogenic amino acids is achieved by expression of proteins on a minimal medium which contains a mixture of [13C6]glucose and glucose with natural isotope abundance as the sole carbon source. Subsequent hydrolysis of the proteins yields the free amino acids. The…
Probing molecular interactions with homogeneous techniques based on rare earth cryptates and fluorescence energy transfer
A homogeneous assay method based on the long-lived fluorescence of rare earth cryptates and amplification by nonradiative energy transfer has been developed for immunoassays. The principles of the assay allow a double discrimination of the emitted signal through spectral and temporal selectivity. The cage structure of…
Preparation of Rodlike Gold Particles by UV Irradiation Using Cationic Micelles as a Template
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Rodlike Gold Particles by UV Irradiation Using Cationic Micelles as a TemplateKunio Esumi, Keiichi Matsuhisa, and Kanjiro TorigoeCite this: Langmuir 1995, 11, 9, 3285–3287Publication Date (Print):September 1, 1995Publication History Published online1 May 2002P…
Biosynthetically Directed Fractional 13C-labeling of Proteinogenic Amino Acids. An Efficient Analytical Tool to Investigate Intermediary Metabolism
Biosynthetically directed fractional 13C labeling of proteinogenic amino acids is achieved by expression of proteins on a minimal medium which contains a mixture of [13C6]glucose and glucose with natural isotope abundance as the sole carbon source. Subsequent hydrolysis of the proteins yields the free amino acids. The…
Analysis of Electronic Transitions as the Difference of Electron Attachment and Detachment Densities
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of Electronic Transitions as the Difference of Electron Attachment and Detachment DensitiesMartin Head-Gordon, Ana M. Grana, David Maurice, and Christopher A. WhiteCite this: J. Phys. Chem. 1995, 99, 39, 14261–14270Publication Date (Print):September 1, 1995Publicati…
Precursor‐derived Covalent Ceramics*
The preparation of ceramic materials from preceramic compounds provides a means for the synthesis of new materials which cannot be obtained by conventional methods. An example is shown in the figure, which shows carbon‐fiber‐reinforced silicon carbide coated with silicon carbonitride prepared by dip‐coating the substr…
A Simple Method for the Production of a Two-Dimensional, Ordered Array of Small Latex Particles
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Simple Method for the Production of a Two-Dimensional, Ordered Array of Small Latex ParticlesR. Micheletto, H. Fukuda, and M. OhtsuCite this: Langmuir 1995, 11, 9, 3333–3336Publication Date (Print):September 1, 1995Publication History Published online1 May 2002Published in…
Thermotropic Liquid Crystals Formed by Intermolecular Hydrogen Bonding Interactions
Abstract The role of hydrogen bonding in the formation or stabilization of liquid crystalline phases has only recently been appreciated. Following the first, wellestablished examples of liquid crystal formation from the dimerization of aromatic carboxylic acids, through hydrogen bonding, several classes of compounds h…
Synthesis and properties of new poly(dimethylsiloxane) nanocomposites
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of new poly(dimethylsiloxane) nanocompositesShelly D. Burnside and Emmanuel P. GiannelisCite this: Chem. Mater. 1995, 7, 9, 1597–1600Publication Date (Print):September 1, 1995Publication History Published online1 May 2002Published inissue 1 September…
First-principles theory of ferroelectric phase transitions for perovskites: The case ofBaTiO3
We carry out a completely first-principles study of the ferroelectric phase transitions in ${\mathrm{BaTiO}}_{3}$. Our approach takes advantage of two features of these transitions: the structural changes are small, and only low-energy distortions are important. Based on these observations, we make systematically impr…