Johan S. Basuki、Lars Esser、Per B. Zetterlund 等 6 位作者2013-08-02Macromolecules
Superparamagnetic iron oxide nanoparticles (IONPs) have been studied extensively as negative contrast agents to enhance MRI efficacy. For optimal effective clinical use in T 2 / T 2 * weighted MRI imaging, the aim is to maximize relaxivity ( r 2 ) of IONPs, and minimize r 1 relaxivity. A prerequisite for successful cl…
Nanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and CharacterizationLanthanide and Transition Metal Complexes
Manuel J. Mendes、Estela Hernández、Esther López 等 10 位作者2013-08-02Nanotechnology
A colloidal deposition technique is presented to construct long-range ordered hybrid arrays of self-assembled quantum dots and metal nanoparticles. Quantum dots are promising for novel opto-electronic devices but, in most cases, their optical transitions of interest lack sufficient light absorption to provide a signif…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNear-Field Optical Microscopy
Tuukka Verho、Mikko Karesoja、Paramita Das 等 8 位作者2013-08-02Advanced Materials
Biological high-performance composites inspire to create new tough, strong, and stiff structural materials. We show a brittle-to-ductile transition in a self-assembled nacre-inspired poly(vinyl alcohol)/nanoclay composite based on a hydration-induced glass-to-rubber transition in the 2D-nanoconfined poly(vinyl alcohol…
Bone Tissue Engineering MaterialsPaleontology and Stratigraphy of FossilsCalcium Carbonate Crystallization and Inhibition
Rute F. Domingos、Zohreh Rafiei、Carlos E. Monteiro 等 5 位作者2013-08-02Environmental Chemistry
Environmental context The number of nano-enabled products reaching consumers is growing exponentially, inevitably resulting in their release to the environment. The environmental fate and mobility of nanomaterials will depend on their physicochemical form(s) under natural conditions. For ZnO nanoparticles, determinati…
Nanoparticles: synthesis and applicationsMercury impact and mitigation studiesGeochemistry and Elemental Analysis
D. A. Zocco、K. Grube、F. Eilers 等 5 位作者2013-08-02Physical Review Letters
The upper critical field H(c2)(T) of the multiband superconductor KFe2As2 has been studied via low-temperature thermal expansion and magnetostriction measurements. We present compelling evidence for Pauli-limiting effects dominating H(c2)(T) for H || a, as revealed by a crossover from second- to first-order phase tran…
Rare-earth and actinide compoundsIron-based superconductors researchSuperconductivity in MgB2 and Alloys
Soon‐Do Yoon2013-08-02Journal of Agricultural and Food Chemistry
The main objects of this study were to prepare the cross-linked potato starch/polyvinyl alcohol blend films with ascorbic acid (AsA) added as a plasticizer with and without heat curing and to examine their mechanical properties, elongation at break, degree of swelling, solubility, water vapor absorption, thermal prope…
Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications
Guiying Liu、Yong Shao、Jian Peng 等 8 位作者2013-08-02Nanotechnology
Double-stranded DNAs (ds-DNAs) have been identified as efficient templates favoring the formation of fluorescent copper nanoparticles (Cu NPs). Herein, we have tried to synthesize fluorescent Cu NPs using single-stranded DNAs (ss-DNAs) as templates and to identify the critical DNA sequences. By comparing the results u…
Gold and Silver Nanoparticles Synthesis and ApplicationsAdvanced biosensing and bioanalysis techniquesNanocluster Synthesis and Applications
Florestan Ziem、Nicolas S. Götz、Andrea Zappe 等 5 位作者2013-08-02Nano Letters
Sensing and imaging paramagnetic species under physiological conditions is a key technology in chemical and biochemical analytics, cell biology, and medical sciences. At submicrometer length scales, nitrogen-vacancy (NV) centers in diamond offer atom-sized probes for magnetic fields. We show that spin relaxation of an…
Diamond and Carbon-based Materials ResearchAnalytical Chemistry and SensorsIon-surface interactions and analysis
Jennifer L. Wierman、Jonathan S. Alden、Chae Un Kim 等 5 位作者2013-08-02Journal of Applied Crystallography
The overall signal-to-noise ratio per unit dose for X-ray diffraction data from protein crystals can be improved by reducing the mass and density of all material surrounding the crystals. This article demonstrates a path towards the practical ultimate in background reduction by use of atomically thin graphene sheets a…
Graphene research and applicationsAdvanced Electron Microscopy Techniques and ApplicationsEnzyme Structure and Function
Daiki Ootsuki、Sunseng Pyon、K. Kudo 等 13 位作者2013-08-02Journal of the Physical Society of Japan
We report an angle-resolved photoemission spectroscopy (ARPES) study on IrTe2 which exhibits an interesting lattice distortion below 270 K and becomes triangular lattice superconductors by suppressing the distortion via chemical substitution or intercalation. ARPES results at 300 K show multi-band Fermi surfaces with…
Rare-earth and actinide compoundsIron-based superconductors researchInorganic Chemistry and Materials
Christoph Schüll、Holger Frey2013-08-02Polymer
In this feature article, the grafting of hyperbranched polymers to different substrates is reviewed. Both grafting onto macromolecules with different topologies (homogeneous grafting) and the resulting complex polymer architectures containing highly branched segments as well as their applications are discussed. In the…
RNA Interference and Gene DeliveryPolymer Surface Interaction StudiesDendrimers and Hyperbranched Polymers
Takashi Yamamoto2013-08-02The Journal of Chemical Physics
Molecular mechanisms of the steady-state growth of the chain folded lamella and the cold crystallization across the glass transition temperature Tg are investigated by molecular dynamics simulation for a system of long polyethylene (PE)-like polymers made of 512 united atoms C512. The present paper aims to reconsider…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Thirumal Mariappan、Charles A. Wilkie2013-08-02Fire and Materials
ABSTRACT Amine‐cured epoxy resins were prepared at 2% by weight phosphorus content using four halogen‐free flame retardants; poly(m‐phenylene methyl phosphonate) (Fyrol PMP); 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide; red phosphorus; and aluminum diethylphosphinate (OP1230). The effect of these additives on t…
Fire dynamics and safety researchFlame retardant materials and propertiesSynthesis and properties of polymers
Jiefeng Gao、Mingjun Hu、Yucheng Dong 等 4 位作者2013-08-02ACS Applied Materials & Interfaces
Graphite-nanoplatelet (GNP)-decorated polymer nanofiber composites with hierarchical structures were fabricated by the combination of electrospinning and ultrasonication. It was found that GNPs could be well attached or embedded onto the nanofibers when their size was comparable to the nanofiber diameter. X-ray diffra…
Supercapacitor Materials and FabricationAdvanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical Applications
Norihito Fukui、Won‐Young Cha、Sangsu Lee 等 7 位作者2013-08-02Angewandte Chemie International Edition
Creating cool fusion: The oxidative fusion of meso-(diarylamino)porphyrins depends heavily on the structures of the diarylamino groups. Bridged diarylamino groups result in the oxidative fusion of 3,5-di-tert-butylphenyl groups to the porphyrin moiety (blue), while non-bridged diarylamino groups invoke formation of ni…
Porphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent MaterialsMetal-Catalyzed Oxygenation Mechanisms
Hideko Koshima、Risa Matsuo、Masafumi Matsudomi 等 5 位作者2013-08-02Crystal Growth & Design
The photomechanical bending behavior of chiral crystals composed of S- and R-enantiomers of photochromic N -3,5-di- tert -butylsalicylidene-1-phenylethylamine in enol form [enol-( S )- 1 and enol-( R )- 1 ] has been compared with that of achiral crystals of the racemic compound [enol-( rac )- 1 ] of S- and R-enantiome…
Supramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research
S.A. Al-Sayari2013-08-02The Open Catalysis Journal
Natural gas is catalytically converted into several bulk chemicals such as ammonia, methanol, dimethyl ether, and synthetic liquid fuels by Fischer-Tropsch synthesis and similar processes. The main step in the conversion of natural gas to these products is the production of synthesis gas with the desired composition r…
Catalytic Processes in Materials ScienceCatalysts for Methane ReformingCatalysis and Oxidation Reactions
Atchara Punya、Walter R. L. Lambrecht2013-08-02Physical Review B
The band offsets between the Zn-IV-N${}_{2}$ nitrides, ZnGeN${}_{2}$ and ZnSnN${}_{2}$, and two other closely lattice matched semiconductors, ZnO and GaN, are calculated using density functional theory calculations including quasiparticle corrections. The interface dependence as well as the role of strain are investig…
Metal and Thin Film MechanicsBoron and Carbon Nanomaterials ResearchMachine Learning in Materials Science
Zhiming Wang、Fengmiao Li、Sheng Meng 等 7 位作者2013-08-02Physical Review Letters
We report on a combined scanning tunneling microscopy and density functional theory calculation study of the SrTiO(3) (110)-(4 × 1) surface. It is found that antiphase domains are formed along the [11[over ¯]0]-oriented stripes on the surface. The domain boundaries are decorated by defect pairs consisting of Ti(2)O(3)…
Semiconductor materials and devicesMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
S. Tripura Sundari、R. Ramaseshan、Feby Jose 等 5 位作者2013-08-02arXiv
The temperature dependence of optical constants of titanium nitride thin film is investigated using spectroscopic ellipsometry between 1.4 to 5 eV in the temperature range 300 K to 650 K in steps of 50 K. The real and imaginary parts of the dielectric functions "1(E) and "2(E) increase marginally with increase in temp…
Materials Science