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Combined EUV reflectance and X-ray reflectivity data analysis of periodic multilayer structures

S. N. Yakunin、Igor A. Makhotkin、K. V. Nikolaev 等 6 位作者2014-08-12Optics Express

We present a way to analyze the chemical composition of periodical multilayer structures using the simultaneous analysis of grazing incidence hard X-Ray reflectivity (GIXR) and normal incidence extreme ultraviolet reflectance (EUVR). This allows to combine the high sensitivity of GIXR data to layer and interface thick…

X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis

Numerical simulations of nanodiamond nitrogen-vacancy centers coupled with tapered optical fibers as hybrid quantum nanophotonic devices

Mohamed Almokhtar、Masazumi Fujiwara、Hideaki Takashima 等 4 位作者2014-08-12Optics Express

Tapered optical fibers are promising one-dimensional nanophotonic waveguides that can provide efficient coupling between their fundamental mode and quantum nanoemitters placed inside them. Here, we present numerical studies on the coupling of single nitrogen-vacancy (NV) centers (single point dipoles) in nanodiamonds…

Diamond and Carbon-based Materials ResearchAdvanced Fiber Laser TechnologiesMechanical and Optical Resonators

Nitrogen-doped photoluminescent carbon nanospheres: green, simple synthesis via hair and application as a sensor for Hg 2+ ions

Juying Hou、Jian‐Liang Li、Jianchao Sun 等 5 位作者2014-08-12RSC Advances

In this paper, hair, which is composed of 99% keratin and 1% other elements, is chosen as a carbon source for nitrogen-doped carbon nanomaterials. By hydrothermal treatment of hair in water without any additives, such as salts, acids, or bases, carbon nanospheres with a photoluminescent quantum yield of 24.8% have bee…

Advanced biosensing and bioanalysis techniquesLuminescence and Fluorescent MaterialsCarbon and Quantum Dots Applications

Experimental and Theoretical Study of the Influence of the State of Dispersion of Graphene on the Percolation Threshold of Conductive Graphene/Polystyrene Nanocomposites

Evgeniy Tkalya、Marcos Gomes Ghislandi、Ronald H. J. Otten 等 9 位作者2014-08-12ACS Applied Materials & Interfaces

The effect of the dispersed state of graphene is studied as a factor influencing the electrical percolation threshold of graphene/polystyrene nanocomposites. We find the percolation threshold of our nanocomposites, prepared with graphene dispersions with different thermodynamic stabilities, degrees of exfoliation, and…

Carbon Nanotubes in CompositesGraphene research and applicationsNanotechnology research and applications

Electro-Responsively Reversible Transition of Polythiophene Films from Superhydrophobicity to Superhydrophilicity

Lianyi Xu、Qiang Ye、Xuemin Lü 等 4 位作者2014-08-12ACS Applied Materials & Interfaces

An electro-responsively reversible switching of wettability between superhydrophobicity and superhydrophilicity has been obtained from a highly porous structured polythiophene film. The polythiophene film was prepared by two-step electrochemical deposition on an indium tin oxide (ITO) substrate. The underlying poly(3,…

Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsNanomaterials and Printing Technologies

Dopamine Adsorption on TiO2 Anatase Surfaces

Inés Urdaneta、A. Keller、O. Atabek 等 8 位作者2014-08-12The Journal of Physical Chemistry C

The dopamine-TiO 2 system shows a specific spectroscopic response, surface enhanced Raman scattering (SERS), whose mechanism is not fully understood. In this study, the goal is to reveal the key role of the molecule–nanoparticle interface in the electronic structure by means of ab initio modeling. The dopamine adsorpt…

Advanced Photocatalysis TechniquesQuantum Dots Synthesis And PropertiesNanomaterials for catalytic reactions

Shear stress and VEGF enhance endothelial differentiation of human adipose-derived stem cells

Francesca Colazzo、Fahad Abdulaziz Alrashed、P. Saratchandra 等 8 位作者2014-08-12Growth Factors

Herein we combine chemical and mechanical stimulation to investigate the effects of vascular endothelial growth factor (VEGF) and physiological shear stress in promoting the differentiation human adipose derived stem cells (ADSCs) into endothelial cells. ADSCs were isolated and characterized; endothelial differentiati…

Mesenchymal stem cell researchElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Tunable electronic properties and low thermal conductivity in synthetic colusites Cu26−xZnxV2M6S32 (x ≤ 4, M = Ge, Sn)

Koichiro Suekuni、Fоtimа KIM、T. Takabatake2014-08-12Journal of Applied Physics

We have first synthesized Cu26−xZnxV2M6S32 (x ≤ 4, M = Ge, Sn) with the cubic colusite structure and measured the thermoelectric properties. For both M = Ge and Sn, the samples with x = 0 show moderately large thermopower of +27 μV/K at 300 K. The metallic conduction of p-type carriers and Pauli-paramagnetic behavior…

Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsTransition Metal Oxide Nanomaterials

Photoinduced Skeletal Rearrangement of Diarylethenes Comprising Oxazole and Phenyl Rings

Andrey G. Lvov、Валерий З. Ширинян、Вадим В. Качала 等 6 位作者2014-08-12Organic Letters

A novel photochemical rearrangement of diarylethenes bearing oxazole and benzene derivatives as aryl moieties that results in the formation of polyaromatic systems was investigated. The mechanism of the transformation includes photocyclization, sequential [1,9] and [1,3]-hydrogen shifts, as well as a lateral oxazole r…

Radical Photochemical ReactionsPhotochromic and Fluorescence ChemistrySynthesis of Indole Derivatives

Control of optical properties of TiN_xO_y films and application for high performance solar selective absorbing coatings

Feiliang Chen、Shaowei Wang、Liming Yu 等 5 位作者2014-08-12Optical Materials Express

TiNxOy films with controllable optical properties have been fabricated by reactive mid-frequency magnetron sputtering from titanium nitride target. The optical and electrical properties were studied as a function of the reactive gas flow and were correlated with the film stoichiometry. The results showed that the beha…

ZnO doping and propertiesSolar Thermal and Photovoltaic SystemsTransition Metal Oxide Nanomaterials

Fouling-Tolerant Nanofibrous Polymer Membranes for Water Treatment

Jang-Woo Lee、Jiyoung Jung、Young Cho 等 8 位作者2014-08-12ACS Applied Materials & Interfaces

Nafion/polyvinylidene fluoride (PVDF) nanofibrous membranes with electrostatically negative charges on the fiber surface were fabricated via electrospinning with superior water permeability and antifouling behaviors in comparison with the conventional microfiltration membranes. The fiber diameter and the resultant por…

Membrane Separation TechnologiesAdvanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical Applications

Simultaneous Visualization of Graphene Grain Boundaries and Wrinkles with Structural Information by Gold Deposition

Seong Uk Yu、Beomjin Park、Yeonchoo Cho 等 6 位作者2014-08-12ACS Nano

Although line defects such as grain boundaries (GBs) and wrinkles are unavoidable in graphene, difficulties in identification preclude studying their impact on electronic and mechanical properties. As previous methods focus on a single type of line defect, simultaneous measurements of both GBs and wrinkles with detail…

Carbon Nanotubes in CompositesGraphene research and applicationsNanowire Synthesis and Applications

Antiadhesive activity of poly-hydroxy butyrate biopolymer from a marine Brevibacterium casei MSI04 against shrimp pathogenic vibrios

George Seghal Kiran、Anuj Nishanth Lipton、S. Priyadharshini 等 9 位作者2014-08-12Microbial Cell Factories

BACKGROUND: Vibrio pathogens are causative agents of mid-culture outbreaks, and early mortality syndrome and secondary aetiology of most dreadful viral outbreaks in shrimp aquaculture. Among the pathogenic vibrios group, Vibrio alginolyticus and V. harveyi are considered as the most significant ones in the grow-out po…

biodegradable polymer synthesis and propertiesSeaweed-derived Bioactive CompoundsAntimicrobial agents and applications

Characterization of tumor-targeting Ag 2 S quantum dots for cancer imaging and therapy in vivo

Haiyan Chen、Bowen Li、Min Zhang 等 9 位作者2014-08-12Nanoscale

Nanomedicine platforms that have the potential to simultaneously provide the function of molecular imaging and therapeutic treatment in one system are beneficial to address the challenges of cancer heterogeneity and adaptive resistance. In this study, Cyclic RGD peptide (cRGD), a less-expensive active tumor targeting…

Advanced biosensing and bioanalysis techniquesQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications

Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Stefania Sandoval、Nitesh Kumar、A. Sundaresan 等 6 位作者2014-08-12Chemistry - A European Journal

Nitrogen-doped reduced graphene oxide (N-doped RGO) samples with a high level of doping, up to 13 wt. %, have been prepared by annealing graphene oxide under a flow of pure ammonia. The presence of nitrogen within the structure of RGO induces a remarkable increase in the thermal stability against oxidation by air. The…

Graphene research and applicationsSupercapacitor Materials and FabricationGraphene and Nanomaterials Applications

Organocatalyzed Synthesis of Aliphatic Polyesters from Ethylene Brassylate: A Cheap and Renewable Macrolactone

Ana Pascual、Haritz Sardón、Antonio Veloso 等 5 位作者2014-08-12ACS Macro Letters

The use of organocatalysts for the polymerization of ethylene brassylate, a commercially available, cheap, and renewable macro(di)lactone is reported for the first time. Ethylene brassylate was polymerized by ring-opening polymerization under bulk and solution conditions at 80 °C. Polymerizations were carried out in t…

Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis

Magnetocaloric effect, cyclability and coefficient of refrigerant performance in the MnFe(P, Si, B) system

F. Guillou、H. Yibole、G. Porcari 等 6 位作者2014-08-12Journal of Applied Physics

MnFeP0.595Si0.33B0.075 has recently been presented as a top class magnetocaloric material combining a large magnetocaloric entropy change, a large temperature change, limited thermal hysteresis, and an enhanced mechanical stability. By providing practical rules to control the transition temperature in the MnFe(P,Si,B)…

Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsShape Memory Alloy Transformations

Synthesis, chemical resistance, and water absorption of bamboo fiber reinforced epoxy composites

Anu Gupta2014-08-12Polymer Composites

Natural fiber reinforced polymer composites are being increasingly used in the civil infrastructure. They have tremendous applicability to bridge systems ranging from use in seismic retrofit and strengthening of existing structural components, either in all composite form, or in conjunction with conventional construct…

Wood Treatment and PropertiesNatural Fiber Reinforced CompositesBamboo properties and applications

Three-Wave Mutual-Checking Method for Data Processing of SHPB Experiments of Concrete

T.-T. Wang、Bingpeng Shang2014-08-12Journal of Mechanics

Abstract Two-wave methods and Three-wave method are conventional methods to process the SHPB experiment data. Due to the presence of transient waves in dynamic experiments, both the stress and strain fields within a specimen are seldom absolutely uniform. Different date processing methods lead to different results. In…

Rock Mechanics and ModelingHigh-Velocity Impact and Material BehaviorStructural Response to Dynamic Loads

Study on the relation between pore size and supercapacitance in mesoporous carbon electrodes with silica-supported carbon nanomembranes

Jian Zhi、Youfu Wang、Sheng Deng 等 4 位作者2014-08-12RSC Advances

Electrochemical capacitors (ECs) have traditionally been considered as standing at the opposite end against batteries in energy–power diagram. They charge and discharge faster than batteries but are limited by much lower energy density. By optimizing the pore structure of porous electrode materials, the performance of…

Supercapacitor Materials and FabricationConducting polymers and applicationsAdvanced battery technologies research