Ke Zeng、Lei Wang、Sixun Zheng2009-08-11The Journal of Physical Chemistry B
Hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane-capped poly(ethylene oxide) telechelics (POSS-capped PEO) were synthesized via click chemistry. The POSS-capped PEO amphiphilic telechelics were incorporated into cross-linked poly(N-isopropylacrylamide) (PNIPAAm) to form the structure of physical inter…
Advanced Sensor and Energy Harvesting MaterialsHydrogels: synthesis, properties, applicationsSilicone and Siloxane Chemistry
Jiatao Zhang、Yun Tang、Lin Weng 等 4 位作者2009-08-11Nano Letters
We report a general well-controlled synthetic strategy to achieve meticulous control of metallic shell growth at the single monolayer level with versatile core nanoparticles, thus facilitating investigation of their scope for numerous applications. The central component of this strategy is to introduce an intermediate…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesCopper-based nanomaterials and applications
Dmitry Volodkin、Narayanan Madaboosi、Jenifer Blacklock 等 5 位作者2009-08-11Langmuir
In this work, we report on the functionalization of layer-by-layer films with gold nanoparticles, microcapsules, and DNA molecules by spontaneous incorporation into the film. Exponentially growing films from biopolymers, namely, hyaluronic acid (HA) and poly-L-lysine (PLL), and linearly growing films from the syntheti…
Bone Tissue Engineering MaterialsQuantum Dots Synthesis And PropertiesPolymer Surface Interaction Studies
Xian Jun Loh、S. H. Goh、Jun Li2009-08-11The Journal of Physical Chemistry B
A series of biodegradable multiblock poly(ester urethane)s having poly[(R)-3-hydroxybutyrate] (PHB), poly(ethylene glycol) (PEG), and poly(propylene glycol) (PPG) segments was prepared. The critical micellization concentration (CMCs) of these water-soluble poly(ester urethane)s were determined at different temperature…
Hydrogels: synthesis, properties, applicationsAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties
Junyong Zhang、Yonghui Deng、Jing Wei 等 11 位作者2009-08-11Chemistry of Materials
In this paper, we demonstrate a successful synthesis of highly ordered mesoporous carbons with large pores and tunable pore walls by using a home-designed ABC amphiphilic triblock copolymer poly(ethylene oxide)- block -poly(methyl methacrylate)- block -polystyrene (PEO- b -PMMA- b -PS) with gradient hydrophilicity as…
Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisCovalent Organic Framework Applications
Lihong Liu、Mingdi Yan2009-08-11Nano Letters
We present a simple and efficient method to immobilize graphene on silicon wafers using perfluorophenylazide (PFPA) as the coupling agent. Graphene sheets were covalently attached to PFPA-functionalized wafer surface by a simple heat treatment under ambient conditions. The formation of single and multiple layers of gr…
Carbon Nanotubes in CompositesGraphene research and applicationsGraphene and Nanomaterials Applications
Satoshi Okamoto2009-08-11arXiv
The surface magnetic phase transition of a double-exchange model for metallic manganites is studied using a Schwinger-boson mean-field method. About three unit-cells wide surface layers are identified. The magnetic moment in these layers decreases more rapidly than that in the bulk when the temperature is increased. T…
Materials ScienceStrongly Correlated Electrons
Lifen Xiao、Yanqiang Zhao、Yin Jia 等 4 位作者2009-08-11Chemistry - A European Journal
Hollow ZnV(2)O(4) microspheres with a clewlike feature were synthesized by reacting zinc nitrate hexahydrate and ammonium metavanadate in benzyl alcohol at 180 degrees C for the first time. GC-MS analysis revealed that the organic reactions that occurred in this study were rather different from those in benzyl alcohol…
Advancements in Battery MaterialsTransition Metal Oxide NanomaterialsAdvanced battery technologies research
Joseph B. Schlenoff2009-08-11Langmuir
The layer-by-layer, or multilayer, method of thin film growth has evolved into a widely-used enabling technology. Starting in the mid 1990's, an exponentially increasing number of publications on the topic, many appearing in this Journal, have shown how multilayers may be adapted to passive and active coatings, device…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresDendrimers and Hyperbranched Polymers
Igor Aharonovich、Stefania Castelletto、David Simpson 等 7 位作者2009-08-11Nano Letters
The fabrication of stable ultrabright single photon sources operating at room temperature is reported. The emitter is based on a color center within a diamond nanocrystal grown on a sapphire substrate by chemical vapor deposition method and exhibits a two-level electronic behavior with a maximum measured count rate of…
Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchNonlinear Optical Materials Studies
Shaojun Chen、Jinlian Hu、Chun‐wah Marcus Yuen 等 5 位作者2009-08-11Polymers for Advanced Technologies
Abstract Remembering more than one permanent shape is an attractive research topic for shape memory materials (SMMs). In this paper, multiple crystalline shape memory polyurethanes (SMPUs) are prepared with PCL10000 and PTMG2900 by a three‐step polymerization method. DSC and WAXD results show that the obtained polyure…
Polymer composites and self-healingShape Memory Alloy TransformationsMarine Sponges and Natural Products
Xingjun Wang、L. S. Vlasenko、S. J. Pearton 等 5 位作者2009-08-11Journal of Physics D Applied Physics
Oxygen and zinc vacancies are unambiguously shown to be formed in as-grown ZnO bulk crystals grown from melt without being subjected to irradiation, from electron paramagnetic resonance (EPR) and optically detected magnetic resonance (ODMR) studies. Concentrations of the defects in their paramagnetic charge states V-O…
ZnO doping and propertiesPerovskite Materials and ApplicationsGa2O3 and related materials
Biman B. Mandal、Subhas C. Kundu2009-08-11Nanotechnology
In recent times self-assembled micellar nanoparticles have been successfully employed in tissue engineering for targeted drug delivery applications. In this review, silk sericin protein from non-mulberry Antheraea mylitta tropical tasar silk cocoons was blended with pluronic F-127 and F-87 in the presence of solvents…
RNA Interference and Gene DeliveryAntimicrobial Peptides and ActivitiesSilk-based biomaterials and applications
Adam Pluskota、Eva Horzowski、Olaf Bossinger 等 4 位作者2009-08-11PLoS ONE
While expectations and applications of nanotechnologies grow exponentially, little is known about interactions of engineered nanoparticles with multicellular organisms. Here we propose the transparent roundworm Caenorhabditis elegans as a simple but anatomically and biologically well defined animal model that allows f…
Nanoparticles: synthesis and applicationsGenetics, Aging, and Longevity in Model OrganismsSelenium in Biological Systems
Fernando Guevara Vasquez、Graeme W. Milton、Daniel Onofrei2009-08-11Physical Review Letters
A new cloaking method is presented for 2D quasistatics and the 2D Helmholtz equation that we speculate extends to other linear wave equations. For 2D quasistatics it is proven how a single active exterior cloaking device can be used to shield an object from surrounding fields, yet produce very small scattered fields.…
Metamaterials and Metasurfaces ApplicationsElectromagnetic Scattering and AnalysisAdvanced Antenna and Metasurface Technologies
Jiaming Hao、Qijun Ren、Zhenghua An 等 7 位作者2009-08-11Physical Review A
We present the design, characterization, and modeling of a specific optical metamaterial, and employ it to manipulate the light polarizations at optical frequencies. Experimental results reveal that the maximum polarization conversion efficiency, i.e., the energy portion converted from $s$ to $p$ polarization after re…
Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchOptical Wireless Communication Technologies
Gianfranco Romanazzi、F. Mlikota Gabler、Dennis A. Margosan 等 5 位作者2009-08-11Phytopathology
Chitosan is a natural biopolymer that must be dissolved in an acid solution to activate its antimicrobial and eliciting properties. Among 15 acids tested, chitosan dissolved in 1% solutions of acetic, L-ascorbic, formic, L-glutamic, hydrochloric, lactic, maleic, malic, phosphorous, and succinic acid. To control gray m…
Essential Oils and Antimicrobial ActivityPostharvest Quality and Shelf Life ManagementNanocomposite Films for Food Packaging
D. Chandra、Shu Yang2009-08-11Langmuir
Because of their increased mechanical compliance, arrays of high-aspect-ratio microstructures are susceptible to deformation by capillary forces. In the literature, the collapse of a 1D array of tall line patterns during liquid evaporation off of their surface has been attributed to the Laplace pressure difference due…
Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsNanomaterials and Printing Technologies
F. Livet、G. Beutier、M. De Boissieu 等 7 位作者2009-08-11arXiv
Using coherent x-ray scattering, we evidenced atomic step roughness at the [111] vicinal surface of a silicon monocrystal of 0.05 degree miscut. Close to the (1/2 1/2 1/2) anti-Bragg position of the reciprocal space which is particularly sensitive to the [111] surface, the truncation rod exhibits a contrasted speckle…
Materials Science
J. A. Haigh、M. Wang、A. W. Rushforth 等 8 位作者2009-08-11arXiv
We have studied the magnetic reversal of L-shaped nanostructures fabricated from (Ga,Mn)As. The strain relaxation due to the lithographic patterning results in each arm having a uniaxial magnetic anisotropy. Our analysis confirms that the magnetic reversal takes place via a combination of coherent rotation and domain…
Mesoscale and Nanoscale PhysicsMaterials Science