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Broadband electromagnetic transparency by graded metamaterials: scattering cancellation scheme

Lei Sun、K. W. Yu2011-04-05Journal of the Optical Society of America B

The electromagnetic scattering by a radially inhomogeneous isotropic metamaterial sphere whose electric permittivity is described by the lossless graded Drude model is studied according to the generalized Mie theory in full-wave condition. The distribution of electromagnetic field is calculated by solving Maxwell&#x20…

Metamaterials and Metasurfaces ApplicationsElectromagnetic Scattering and AnalysisAdvanced Antenna and Metasurface Technologies

Optical properties of a single-colour centre in diamond with a green zero-phonon line

Jason M. Smith、Fabio Grazioso、Brian Patton 等 6 位作者2011-04-05New Journal of Physics

We report the photoluminescence characteristics of a colour centre in diamond grown by plasma-assisted chemical vapour deposition. The colour centre emits with a sharp zero-phonon line at 2.330 eV (λ=532 nm) and a lifetime of 3.3 ns, thus offering potential for a high-speed single-photon source with green emission. It…

High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchForce Microscopy Techniques and Applications

Measurement and Correlation for the Solubility of Dimethyl 1,4-Cyclohexanedione-2,5-dicarboxylate in Different Solvents at Temperatures from (278.15 to 323.15) K

Zhaoguo Chen、Wenge Yang、Yonghong Hu 等 6 位作者2011-04-05Journal of Chemical & Engineering Data

As an urgent need in the design and upscale of the industrial crystallization process, on the basis of the isothermal saturated method, the solubility of dimethyl 1,4-cyclohexanedione-2,5-dicarboxylate in N, N -dimethylformamide, methanol, 1-propanol, acetonitrile, 2-propanol, ethyl acetate, and acetone was measured a…

Analytical Chemistry and ChromatographyCrystallization and Solubility StudiesChemical and Physical Properties in Aqueous Solutions

pH‐Responsive Micelles Based on Amphiphilic Block Copolymers Bearing Ortho Ester Pendants as Potential Drug Carriers

Rupei Tang、Weihang Ji、Chun Wang2011-04-05Macromolecular Chemistry and Physics

Abstract Amphiphilic block copolymers (PEG‐ b ‐PEYM) bearing acid‐labile ortho ester pendant chains were synthesized by atom transfer radical polymerization, and the effect of chain‐length of the ortho‐ester‐bearing PEYM block on micelle properties was investigated. The length of the PEYM block affected the critical m…

Nanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and CharacterizationDendrimers and Hyperbranched Polymers

Hydrogen Storage Characteristics of Melt Spun Mg-23.5Ni-xCu Alloys and Mg-23.5Ni-2.5Cu Alloy Mixed with Nb2O5 and NbF5

Myoung Youp Song、Seong‐Hyeon Hong、Sung Nam Kwon2011-04-05대한금속재료학회지

Mg-23.5 wt%Ni-xwt%Cu (x=2.5, 5 and 7.5) samples for hydrogen storage were prepared by melt spinning and crystallization heat treatment from a Mg-23.5 wt%Ni-5 wt%Cu alloy synthesized by the gravity casting method. They were then ground under H2 to obtain a fine powder. Among these samples the Mg- 23.5Ni-2.5Cu sample ha…

Magnesium Alloys: Properties and ApplicationsHydrogen Storage and MaterialsSpacecraft and Cryogenic Technologies

In Vitro Study and Biocompatibility of Calcined Mesoporous Silica Microparticles in Mouse Lung

Suhail Al‐Salam、Ghazala Balhaj、Suleiman Al‐Hammadi 等 8 位作者2011-04-05Toxicological Sciences

We report on the pneumatocyte structure and function of mouse lung specimens exposed in vitro to two calcined mesoporous silica particles, MCM41-cal (spheres, ∼300 to 1000 nm in diameter) and SBA15-cal (irregular rods averaging ∼500 nm in diameter and ∼1000 nm in length). These mesoporous silica particles are in consi…

Nanoparticle-Based Drug DeliveryInhalation and Respiratory Drug DeliveryGraphene and Nanomaterials Applications

Pinning effect on the photonic bandgaps of blue-phase liquid crystal

Hu-Yi Liu、Chun‐Ta Wang、Chiao-Yun Hsu 等 4 位作者2011-04-05Applied Optics

This study demonstrates the surface alignment induced pinning effects on blue phases. The morphologies of blue-phase platelets in a nonaligned cell become less uniform, and the photonic bandgap shifted over 120 nm during the cooling process. Comparing the different boundary conditions, the anchoring forces provide by…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsPlant Reproductive Biology

Crystallization Behavior of Binary Even−Even n-Alkane Mixtures in Microcapsules: Effect of Composition and Confined Geometry on Solid−Solid phase Separation

Dongsheng Fu、Yufeng Liu、Yunlan Su 等 5 位作者2011-04-05The Journal of Physical Chemistry B

The crystallization behaviors of binary even-even normal alkane (n-alkane) mixtures (n-C(18)H(38)/n-C(20)H(42), abbreviated as C(18)/C(20)) with different compositions, both in the bulk state and in nearly monodisperse microcapsules, have been investigated by the combination of differential scanning calorimetry and te…

Polymer crystallization and propertiesMaterial Dynamics and PropertiesBlock Copolymer Self-Assembly

Cross-Linking Cotton Cellulose by the Combination of Maleic Acid and Sodium Hypophosphite. 2. Fabric Fire Performance

Charles Q. Yang、Qingliang He、Bojana Vončina2011-04-05Industrial & Engineering Chemistry Research

Multifunctional carboxylic acids have been used as durable press finishing agents for cotton with sodium hypophosphite (NaH 2 PO 2 ) as the most effective catalyst. In our previous research, we found that cellulose cross-linking takes place when cotton fabric treated with a combination of maleic acid and NaH 2 PO 2 is…

Fire dynamics and safety researchFlame retardant materials and properties

Impact of Film Thickness on the Morphology of Mesoporous Carbon Films Using Organic−Organic Self-Assembly

Bryan D. Vogt、Vicki L. Chavez、Mingzhi Dai 等 9 位作者2011-04-05Langmuir

Mesoporous polymer and carbon thin films are prepared by the organic-organic self-assembly of an oligomeric phenolic resin with an amphiphilic triblock copolymer template, Pluronic F127. The ratio of resin to template is selected such that a body-centered cubic (Im3m) mesostructure is formed in the bulk. However, well…

Supercapacitor Materials and FabricationMesoporous Materials and CatalysisCovalent Organic Framework Applications

Polarization-Dependent Scanning Photoionization Microscopy: Ultrafast Plasmon-Mediated Electron Ejection Dynamics in Single Au Nanorods

Volker Schweikhard、Andrej Grubisic、Thomas A. Baker 等 5 位作者2011-04-05ACS Nano

This work investigates plasmon-enhanced multiphoton scanning photoelectron emission microscopy (SPIM) of single gold nanorods under vacuum conditions. Striking differences in their photoemission properties are observed for nanorods deposited either on 2 nm thick Pt films or 10 nm thick indium tin oxide (ITO) films. On…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchNonlinear Optical Materials Studies

Molecular Engineering of the Glass Transition: Glass-Forming Ability across a Homologous Series of Cyclic Stilbenes

Ping Wen、Daniel Paraska、Robert W. Baker 等 5 位作者2011-04-05The Journal of Physical Chemistry B

We report on the glass-forming abilities of the homologous series 1,2-diphenylcyclo-butene, pentene, hexene and heptene-a series that retains the cis-phenyl configuration characteristic of the well-studied glass former, o-terphenyl. We find that the glass-forming ability shows a sharp maximum for the six-membered ring…

Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesGlass properties and applications

Kinetic Study of the Static Hydrothermal Synthesis of BaTiO3 Using Titanate Nanotubes Precursors

Florentina Maxim、Paula M. Vilarinho、Paula Ferreira 等 5 位作者2011-04-05Crystal Growth & Design

A kinetic study of the growth of BaTiO 3 under hydrothermal conditions using layered titanate nanotubes as precursors has been performed at 110 and 200 °C. At the early stages of crystallization, irrespective of temperature, pseudocubic BaTiO 3 nucleates on the surfaces of the nanotubes. Growth subsequently proceeds b…

Ferroelectric and Piezoelectric MaterialsAdvanced ceramic materials synthesisDielectric materials and actuators

High-Quality Protein Crystal Growth of Mouse Lipocalin-Type Prostaglandin D Synthase in Microgravity

Koji Inaka、S. Takahashi、Kosuke Aritake 等 13 位作者2011-04-05Crystal Growth & Design

Lipocalin-type prostaglandin (PG) D synthase (L-PGDS) catalyzes the isomerization of PGH(2) to PGD(2) and is involved in the regulation of pain and of nonrapid eye movement sleep and the differentiation of male genital organs and adipocytes, etc. L-PGDS is secreted into various body fluids and binds various lipophilic…

Protein Structure and DynamicsCancer, Hypoxia, and MetabolismEnzyme Structure and Function

Spectral and spatial distribution of polarization at the LaAlO3/SrTiO3interface

Andrea Rubano、M. Fiebig、Domenico Paparo 等 11 位作者2011-04-05Physical Review B

The polarization induced at the LaAlO${}_{3}$/SrTiO${}_{3}$ interface has been explored by optical second harmonic generation (SHG) spectroscopy. Our data reveal that an orbital reconstruction of the SrTiO${}_{3}$ surface occurs when three epitaxial monolayers of LaAlO${}_{3}$ are deposited on top of it. The reconstru…

Semiconductor materials and devicesMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Vesicular Mixed Gemini−SDS−Hemin−Imidazole Complex as a Peroxidase-Like Nano Artificial Enzyme

Hussein Gharibi、Zainab Moosavi‐Movahedi、Sohaeila Javadian 等 5 位作者2011-04-05The Journal of Physical Chemistry B

A biomimetic was designed for the construction of a new efficient peroxidase-like nano artificial enzyme with a heme-imidazole component complexed with gemini 12-2-12/SDS supramolecules. The presence of a simple surfactant mixture (SDS/gemini 12-2-12 at a particular concentration) provided an apoprotein-like hydrophob…

Electrochemical sensors and biosensorsPorphyrin and Phthalocyanine ChemistryAdvanced Nanomaterials in Catalysis

Calculation of carrier-concentration-dependent effective mass in Nb-doped anatase crystals of TiO2

Huynh Anh Huy、Bálint Aradi、Thomas Frauenheim 等 4 位作者2011-04-05Physical Review B

The calculated optical effective masses of electrons, both orthogonal and parallel to the tetragonal axis of the crystal, are reported as a function of carrier concentration in Nb-doped anatase. The calculation is based on the band structure, obtained by density functional theory in the generalized gradient approximat…

ZnO doping and propertiesCopper-based nanomaterials and applicationsElectronic and Structural Properties of Oxides

Nature of the Sub-Rouse Modes in the Glass−Rubber Transition Zone of Amorphous Polymers

Xuebang Wu、C.S. Liu、Zhen‐Gang Zhu 等 5 位作者2011-04-05Macromolecules

The shear mechanical compliance of the glass−rubber transition or softening zone of high molecular weight amorphous polymers typically increases from the glassy compliance of ∼10 −10 cm 2 /dyn up to the rubbery plateau of ∼10 −6 cm 2 /dyn. The contributions from the local segmental relaxation and the Rouse modes canno…

Polymer crystallization and propertiesMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies

A High‐Performance, Nanostructured Ba0.5Sr0.5Co0.8Fe0.2O3‐δ Cathode for Solid‐Oxide Fuel Cells

Bin Liu、Xiaobo Chen、Yonglai Dong 等 5 位作者2011-04-05Advanced Energy Materials

Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) cathodes are prepared on NiO-yttria-stabilized zirconia (YSZ)/YSZ composite substrates using pulsed laser deposition (PLD) and the screen-printing method. The cathode by PLD outperforms that by screen-printing, with an enhancement of over 150% in the maximum power, which can be attribut…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Long-circulating poly(ethylene glycol)-grafted gelatin nanoparticles customized for intracellular delivery of noscapine

Jitender Madan、Neerupma Dhiman、Satish Sardana 等 6 位作者2011-04-05Anti-Cancer Drugs

Noscapine, the tubulin-binding anticancer agent, when administered orally, requires high ED(50) (300-600 mg/kg), whereas intravenous administration (10 mg/kg) results in rapid elimination of the drug with a half-life of 0.39 h. Hence, the development of long-circulating injectable nanoparticles can be an interesting o…

Nanoparticle-Based Drug DeliveryFullerene Chemistry and ApplicationsGraphene and Nanomaterials Applications