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Predicting Intrinsic Aqueous Solubility by a Thermodynamic Cycle

David Scott Palmer、Antonio Llinàs、Iñaki Morao 等 7 位作者2008-02-22Molecular Pharmaceutics

We report methods to predict the intrinsic aqueous solubility of crystalline organic molecules from two different thermodynamic cycles. We find that direct computation of solubility, via ab initio calculation of thermodynamic quantities at an affordable level of theory, cannot deliver the required accuracy. Therefore,…

Phase Equilibria and ThermodynamicsChemical and Physical Properties in Aqueous SolutionsCrystallization and Solubility Studies

A model for catalytic growth of carbon nanotubes

Sayangdev Naha、Ishwar K. Puri2008-02-22Journal of Physics D Applied Physics

Despite the utility and promise of carbon nanotubes (CNTs), their production is generally based on empirical principles. There are only a few CNT formation models that predict the dependence of their growth on various synthesis parameters. Typically, these do not incorporate a detailed mechanistic consideration of the…

Graphene research and applicationsCarbon Nanotubes in CompositesFullerene Chemistry and Applications

Micro-bending tests: A comparison between three-dimensional discrete dislocation dynamics simulations and experiments

Christian Motz、D. Weygand、J. Senger 等 4 位作者2008-02-22Acta Materialia

Discrete dislocation dynamics simulations in three dimensions are performed on micro-sized bending beams and the results are compared with experiments. A strong size dependence of the flow stress σf (or bending moment) is found. The flow stress scales approximately inversely with the beam thickness t. The simulations…

Microstructure and mechanical propertiesMetal and Thin Film MechanicsNonlocal and gradient elasticity in micro/nano structures

The Phase Diagram GdF3-LuF3

I. M. Ranieri、S. L. Baldochi、D. Klimm2008-02-22arXiv

The phase diagram gadolinium fluoride - lutetium fluoride was determined by differential scanning calorimetry (DSC) and X-ray powder diffraction analysis. Both pure components undergo a reversible first order transformation to a high temperature phase. The mutual solubility of both components is unlimited in the ortho…

cond-mat.otherChemical PhysicsMaterials Science

Analytical Technique for Label-Free Multi-Protein Detection Based on Western Blot and Surface-Enhanced Raman Scattering

Xiao X. Han、Hui Ying Jia、Yan F. Wang 等 8 位作者2008-02-22Analytical Chemistry

We have developed a new analytical procedure for label-free protein detection designated "Western SERS", consisting of protein electrophoresis, Western blot, colloidal silver staining, and surface-enhanced Raman scattering (SERS) detection. A novel method of silver staining for Western blot that uses a silver colloid,…

Biosensors and Analytical DetectionAdvanced biosensing and bioanalysis techniquesGold and Silver Nanoparticles Synthesis and Applications

Microwave spectral analysis by means of non-resonant parametric recovery of spin-wave signals in a thin magnetic film

S. Schäfer、A. V. Chumak、A. A. Serga 等 5 位作者2008-02-22arXiv

We report on the storage and non-resonant parametric recovery of microwave signals carried by a dipolar surface spin-wave pulse in a thin ferrimagnetic film. The information about the intensity of the spectral components of the signal within a narrow frequency band is saved due to the excitation of a dipolar-exchange…

Materials Science

Screening of Coulomb Impurities in Graphene

I. S. Terekhov、A. I. Milstein、Valeri N. Kotov 等 4 位作者2008-02-22Physical Review Letters

We calculate exactly the vacuum polarization charge density in the field of a subcritical Coulomb impurity, Z|e|/r, in graphene. Our analysis is based on the exact electron Green's function, obtained by using the operator method, and leads to results that are exact in the parameter Zalpha, where alpha is the "fine-str…

Graphene research and applicationsQuantum and electron transport phenomenaCarbon Nanotubes in Composites

Plasmonic Resonant Optical Nanoswitch

Andrea Alu、Nader Engheta2008-02-22arXiv

We examine here the anomalous optical response of a nanosphere composed of two conjoined hemispheres of different materials, one of them being plasmonic. At the internal resonance, we show how the light interaction becomes dramatically dependent on the polarization of the local electric field exciting the particle. In…

Materials Science

Pressure-induced order-disorder phase transition in superconducting CaC6

A. Gauzzi、N. Bendiab、M. d'Astuto 等 12 位作者2008-02-22arXiv

By means of synchrotron X-ray diffraction, we studied the effect of high pressure, P, up to 13 GPa on the room temperature crystal structure of superconducting CaC6. In this P range, no change of the pristine space group symmetry, \textit{R\=3m}, is found. However, at 9 GPa, i.e. close to the critical value at which a…

SuperconductivityMaterials Science

Thermoluminescence and Kinetics of Persistent Luminescence of Vacuum-Sintered Tb3+-Doped and Tb3+,Ca2+-Codoped Lu2O3 Materials

Joanna Trojan–Piegza、Janne Niittykoski、Jorma Hölsä 等 4 位作者2008-02-22Chemistry of Materials

The properties of green thermoluminescence (TL) and persistent luminescence of Lu 2 O 3:Tb 3+ and Lu 2 O 3:Tb 3+,Ca 2+ materials sintered in vacuum at 1700 °C were investigated. The concentration of Tb varied in the range 0.1–3 mol %, and the Ca content was 1 mol %. Ca 2+ codoping enhanced the room temperature persist…

Glass properties and applicationsLuminescence Properties of Advanced MaterialsLanthanide and Transition Metal Complexes

A Four‐Shell, Nesting Doll‐like 3d–4f Cluster Containing 108 Metal Ions

Xiang‐Jian Kong、Yan‐Ping Ren、Wenxian Chen 等 7 位作者2008-02-22Angewandte Chemie International Edition

A Russian doll: A heterometallic 108-metal cluster featuring an unprecedented four-shell, nesting doll-like structure (see picture) and overall antiferromagnetic coupling is reported.

Lanthanide and Transition Metal ComplexesInorganic Chemistry and MaterialsMagnetism in coordination complexes

Effect of Carbon Doping on the Mesoporous Structure of Nanocrystalline Titanium Dioxide and Its Solar-Light-Driven Photocatalytic Degradation of NOx

Yu Huang、Wingkei Ho、Shuncheng Lee 等 6 位作者2008-02-22OpenAlex

Effective mesoporous nanocrystalline C-doped TiO(2) photocatalysts were synthesized through a direct solution-phase carbonization using titanium tetrachloride and diethanolamine as precursors. X-ray photoelectron spectroscopy (XPS) results revealed that oxygen sites in the TiO(2) lattice were substituted by carbon ato…

Advanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar CellsCatalytic Processes in Materials Science

Microstructural Characterization of Materials

David Brandon、Wayne D. Kaplan2008-02-22OpenAlex

Preface to the Second Edition. Preface to the First Edition. 1. The Concept of Microstructure. 1.1. Microstructural Features. 1.2. Crystallography and Crystal Structure. 2. Diffraction Analysis of Crystal Structure. 2.1. Scattering of Radiation by Crystals. 2.2. Reciprocal Space. 2.3. X-ray Diffraction Methods. 2.4. D…

Advanced Materials Characterization TechniquesElectron and X-Ray Spectroscopy Techniques

A Label-Free Immunoassay Based Upon Localized Surface Plasmon Resonance of Gold Nanorods

Kathryn M. Mayer、Seunghyun Lee、Hongwei Liao 等 8 位作者2008-02-22OpenAlex

Robust gold nanorod substrates were fabricated for refractive index sensing based on localized surface plasmon resonance (LSPR). The substrate sensitivity was 170 nm/RIU with a figure of merit of 1.3. To monitor biomolecular interactions, the nanorod surfaces were covered with a self-assembled monolayer and conjugated…

Advanced biosensing and bioanalysis techniquesAdvanced Biosensing Techniques and ApplicationsGold and Silver Nanoparticles Synthesis and Applications

Fe3O4 Magnetic Nanoparticles as Peroxidase Mimetics and Their Applications in H2O2 and Glucose Detection

Hui Wei、Erkang Wang2008-02-22OpenAlex

Artificial enzyme mimetics are a current research interest because natural enzymes bear some serious disadvantages, such as their catalytic activity can be easily inhibited and they can be digested by proteases. A very recently study reported by Yan et al. has proven that Fe(3)O(4) magnetic nanoparticles (MNPs) exhibi…

Advanced biosensing and bioanalysis techniquesElectrochemical sensors and biosensorsAdvanced Nanomaterials in Catalysis

Effect of crystalline microstructure near the particle/matrix interface on the toughening of syndiotactic polystyrene/polyamide‐6 blends

Byung Il Kang、Sobha Vijayan Nair、Hoichang Yang 等 6 位作者2008-02-21Journal of Applied Polymer Science

Abstract Toughening behavior of semicrystalline polymers was investigated using syndiotactic polystyrene (sPS)/polyamide 6(PA‐6) blends compatibilized with maleic‐anhydride functionalized poly (styrene‐ b ‐(ethylene‐ co ‐butylene)‐ b ‐styrene) SEBS‐MA triblock copolymer. The effect of interparticle distance and crysta…

Natural Fiber Reinforced CompositesPolymer Nanocomposites and PropertiesPolymer crystallization and properties

A rigorous finite-element domain decomposition method for electromagnetic near field simulations

Lin Zschiedrich、Sven Burger、Achim Schädle 等 4 位作者2008-02-21Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Rigorous computer simulations of propagating electromagnetic fields have become an important tool for optical metrology and design of nanostructured optical components. A vectorial finite element method (FEM) is a good choice for an accurate modeling of complicated geometrical features. However, from a numerical point…

Electromagnetic Simulation and Numerical MethodsElectromagnetic Scattering and AnalysisOptical Coatings and Gratings

Single‐Crystal X‐ray Study of Ba2Cu2Te4O11Br2 and Its Incommensurately Modulated Superstructure Companion

Rie T. Fredrickson、Mats Johnsson、Sven Lidin2008-02-21Chemistry - A European Journal

Compounds containing lone-pair elements such as Te(IV) are very interesting from the structural point of view, as the lone-pair nonbonding regions create low-dimensional geometrical arrangements. We have synthesized two new compounds with these features-Ba(2)Cu(2)Te(4)O(11)Br(2) (I) and Ba(2)Cu(2)Te(4)O(11-delta)(OH)(…

Iron-based superconductors researchAdvanced Condensed Matter PhysicsCrystal Structures and Properties

Improvement of the conductivity, electroactivity, and redoxability of polythiophene by electropolymerization of thiophene in the presence of catalytic amount of 1‐(2‐pyrrolyl)‐2‐(2‐thienyl) ethylene (PTE)

Gholam Reza Kiani、Nasser Arsalani、Mir Ghasem Hosseini 等 4 位作者2008-02-21Journal of Applied Polymer Science

Abstract The electropolymerization of thiophene in the presence of 1‐(2‐pyrrolyl)‐2‐(2‐thienyl) ethylene (PTE) was investigated. PTE was synthesized via Wittig reaction and by the addition of catalytic amount of PTE during the electropolymerization of thiophene, the conditions of electropolymerization of thiophene wer…

Electrochemical Analysis and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics