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Supercapacitor assisted LDO (SCALDO) techniquean extra low frequency design approach to high efficiency DC-DC converters and how it compares with the classical switched capacitor converters

Kosala Kankanmage、Nihal Kulatana2013-03-01OpenAlex

Supercapacitor assisted low dropout regulators (SCALDO) were proposed as an alternative design approach to DC-DC converters, where the supercapacitor circulation frequency (switching frequency) is in the order of few Hz to few 10s of Hz, with an output stage based on a low dropout regulator stage. For converters such…

Advanced DC-DC ConvertersSupercapacitor Materials and FabricationAdvanced Battery Technologies Research

Manipulating Nanoscale Morphologies in Cylinder-Forming Poly(styrene-b-isoprene-b-styrene) Thin Films Using Film Thickness and Substrate Surface Chemistry Gradients

Ming Luo、Jonathan E. Seppala、Julie Albert 等 7 位作者2013-03-01Macromolecules

Controlling the nanostructure of self-assembled block copolymer thin films is critical for applications in nanotemplate design, nanoporous membranes, and organic optoelectronics. In this study, we employed a gradient approach to examine the effects of substrate surface chemistry and film thickness on the self-assembly…

Block Copolymer Self-AssemblyMachine Learning in Materials ScienceAnodic Oxide Films and Nanostructures

Comparison of Damages on Tungsten Surface Exposed to Noble Gas Plasmas

Miyuki Yajima、M. Yamagiwa、Shin Kajita 等 10 位作者2013-03-01Plasma Science and Technology

Tungsten was exposed to pure Ar or Ne plasmas over 1550 K at several incident ion energies. Even under the irradiation condition that the tungsten nanostructure is formed by He plasma irradiation, holes/bubbles and fiberform nanostructures were not formed on the surface by exposure to Ar or Ne plasmas. In addition, th…

Metal and Thin Film MechanicsFusion materials and technologiesNuclear Materials and Properties

Folic acid-tethered Pep-1 peptide-conjugated liposomal nanocarrier for enhanced intracellular drug delivery to cancer cells: conformational characterization and in vitro cellular uptake evaluation

Young Wook Choi、Kang、Park 等 5 位作者2013-03-01International Journal of Nanomedicine

BACKGROUND: A novel dual ligand-modified liposome, folic acid-tethered Pep-1 peptide-conjugated liposomal nanocarrier (FP-Lipo), was designed to overcome the nonselectivity of conventional penetrating peptide-tagged nanoparticulates and to provide the advantage of selective targeting of the folic acid receptor, which…

Nanoparticle-Based Drug DeliveryLipid Membrane Structure and BehaviorRNA Interference and Gene Delivery

Visible and near infrared resonance plasmonic enhanced nanosecond laser optoporation of cancer cells

Bastien St-Louis Lalonde、Étienne Boulais、Jean‐Jacques Lebrun 等 4 位作者2013-03-01Biomedical Optics Express

In this paper, we report a light driven, non-invasive cell membrane perforation technique based on the localized field amplification by a nanosecond pulsed laser near gold nanoparticles (AuNPs). The optoporation phenomena is investigated with pulses generated by a Nd:YAG laser for two wavelengths that are either in th…

Gold and Silver Nanoparticles Synthesis and ApplicationsNanoplatforms for cancer theranosticsLaser-Ablation Synthesis of Nanoparticles

Chemical Synthesis and Characterization of Perovskite NdfeO3 Nanocrystals via a Co-Precipitation Method

Mozhgan Khorasani-Motlagh、Meissam Noroozifar、Mohammad Yousefi 等 4 位作者2013-03-01International journal of nanoscience and nanotechnology

A facile co-precipitation method for the synthesis of well-dispersed NdFeO3 nanocrystals is developed in the presence of octanoic acid as surfactant. Co-precipitation can produce fine, high-purity, stoichiometric particles of single and multicomponent metal oxides. The product is characterized by Fourier transform inf…

2D Materials and ApplicationsMultiferroics and related materialsIron oxide chemistry and applications

Nanostructured thin films of degradable block copolymers and their applications

Ming-Shiuan She、Ting‐Ya Lo、Han‐Yu Hsueh 等 4 位作者2013-03-01NPG Asia Materials

Nanopatterning using self-assembled thin films of degradable block copolymers (BCPs) has attracted considerable attention and inspired a variety of appealing applications in different research areas. To create useful nanopatterns for practical uses, controlling the orientation of the BCP microdomains is essential. The…

Organic Electronics and PhotovoltaicsAdvanced Polymer Synthesis and CharacterizationBlock Copolymer Self-Assembly

Acrylic Pressure-Sensitive Adhesives Containing SiO 2 Nanoparticles

Zbigniew Czech、Agnieszka Kowalczyk、Joanna Ortyl 等 4 位作者2013-03-01Green Sciences

The use of acrylic pressure-sensitive adhesives (PSAs) is increasing in a variety of industrial fields. They have been applied in the manufacture of mounting tapes, self-adhesive labels, protective films, masking tapes, splicing tapes, carrier-free tapes, sign and marking films, and in diverse medical products, such a…

Advanced Polymer Synthesis and CharacterizationAnalytical Chemistry and SensorsSilicone and Siloxane Chemistry

Antimonato Polyoxovanadate Based Three-Dimensional Framework Exhibiting Ferromagnetic Exchange Interactions: Synthesis, Structural Characterization, and Magnetic Investigation of {[Fe(C6H14N2)2]3[V15Sb6O42(H2O)]}·8H2O

Adam Wutkowski、Christian Näther、Paul Kögerler 等 4 位作者2013-03-01Inorganic Chemistry

The new polyoxovanadate {[Fe(C6H14N2)2]3[V15Sb6O42(H2O)]}·8H2O (1) was obtained under solvothermal conditions using the amine that acts at the same time as the ligand, solvent, and reducing agent. The central structural motif of 1, [V15Sb6O42(H2O)](6-), is related to the {V18O42}-archetype cluster by replacing three V…

Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesPolyoxometalates: Synthesis and Applications

Degradation studies during water absorption, aerobic biodegradation, and soil burial of biobased thermoplastic starch from agricultural waste/polypropylene blends

Ming Meng Pang、Meng‐Yan Pun、Z. A. Mohd Ishak2013-03-01Journal of Applied Polymer Science

Abstract Thermoplastic starch (TPS) from agricultural waste consisting of different amylose/amylopectin ratios was blended with polypropylene (PP) for degradation studies. The agricultural waste material was obtained from seeds and tubers with low starch contents of ∼50%. Non‐Fickian behavior was observed for the wate…

Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesMicroplastics and Plastic Pollution

Bandwidth analysis of waveguide grating coupler

Zhe Xiao、Tsung-Yang Liow、Jing Zhang 等 5 位作者2013-03-01Optics Express

The bandwidth of planar waveguide grating couplers is theoretically investigated based on the rigorous grating theory. We observe that the bandwidth behavior is not only determined by the grating coupler intrinsic properties, but also affected by the fiber parameters such as position, beam waist and Numerical Aperture…

Advanced Fiber Optic SensorsPhotonic and Optical DevicesOptical Coatings and Gratings

Antibacterial nanostructured composite films for biomedical applications: microstructural characteristics, biocompatibility, and antibacterial mechanisms

Fei‐Peng Lee、Duen-Jeng Wang、Li-Kai Chen 等 7 位作者2013-03-01Biofouling

Hydrogenated Cu-incorporated diamond-like carbon (a-C:H/Cu) films were prepared in the present study using a radio-frequency plasma magnetron sputtering system at various CH4/Ar gas ratios. The a-C:H/Cu films were characterized by scanning electron microscopy, atomic force microscopy, Raman spectroscopy, transmission…

Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchAdvanced materials and composites

Significant Capacitance Performance of Vertically Aligned Single-Walled Carbon Nanotube Supercapacitor by Varying Potassium Hydroxide Concentration

Mohd Asyadi Azam、Akihiko Fujiwara、Tatsuya Shimoda2013-03-01International Journal of Electrochemical Science

In this manuscript, the effect of potassium hydroxide (KOH) electrolyte concentrations (0.1 M, 1.0 M, and 6.0 M) to the specific gravimetric capacitance of vertically aligned single-walled carbon nanotube (VA-SWCNT) based supercapacitor will be reported. VA-SWCNT electrode was prepared using direct growth technique of…

Supercapacitor Materials and FabricationConducting polymers and applicationsAdvanced battery technologies research

Magnetic entropy change involving martensitic transition in NiMn-based Heusler alloys

Fengxia Hu、Baogen Shen、Ji-Rong Sun2013-03-01Chinese Physics B

Our recent progress on magnetic entropy change (Δ S ) involving martensitic transition in both conventional and metamagnetic NiMn-based Heusler alloys is reviewed. For the conventional alloys, where both martensite and austenite exhibit ferromagnetic (FM) behavior but show different magnetic anisotropies, a positive Δ…

Magnetic and transport properties of perovskites and related materialsShape Memory Alloy TransformationsHigh Entropy Alloys Studies

Preparation and Characterization of Chitosan-Based Flame Retardant and Its Thermal and Combustible Behavior on Polyvinyl Alcohol

Shuang Hu、Lei Song、Yuan Hu2013-03-01Polymer-Plastics Technology and Engineering

A novel natural material-based flame retardant melamine chitosan phosphate (MPCS) has been prepared. Its impact on thermal properties and flammability performance of polyvinyl alcohol (PVA) was analyzed. Thermogravimetric analysis data exhibited that MPCS enhanced the thermal stability of materials at high temperature…

biodegradable polymer synthesis and propertiesFlame retardant materials and propertiesSynthesis of Organic Compounds

Development and validation of an HPLC method for the determination of fluorouracil in polymeric nanoparticles

Ana Cristina de Mattos、Najeh Maissar Khalil、Rubiana Mara Mainardes2013-03-01Brazilian Journal of Pharmaceutical Sciences

The objective of this work was to develop and validate a rapid high performance liquid chromatography (HPLC) method for the quantitative analysis of fluorouracil (5-FU) in polymeric nanoparticles. Chromatographic analyses were performed on an RP C18 column with a mobile phase consisting of acetonitrile and water (10:9…

Nanoparticle-Based Drug DeliveryAnalytical Methods in PharmaceuticalsChemical Synthesis and Characterization

Hydrothermal Synthesis and Characterization of Europium-doped Barium Titanate Nanocrystallites

Margarita García-Hernández、Geneviève Chadeyron、Damien Boyer 等 6 位作者2013-03-01Nano-Micro Letters

Abstract Barium titanate nanocrystallites were synthesized by a hydrothermal technique from barium chloride and tetrabutyl titanate. Single-crystalline cubic perovskite BaTiO 3 consisting of spherical particles with diameters ranging from 10 to 30 nm was easily achieved by this route. In order to study the influence o…

Ferroelectric and Piezoelectric MaterialsPerovskite Materials and ApplicationsMicrowave Dielectric Ceramics Synthesis

Riboflavin Analogs as Antiinfectives: Occurrence, Mode of Action, Metabolism and Resistance

Danielle Biscaro Pedrolli、Frank Jankowitsch、Julia Schwarz 等 7 位作者2013-03-01Current Pharmaceutical Design

Antimetabolites are molecules, which are structurally similar to molecules needed to carry out primary metabolic reactions.The inhibitory activity of an antimetabolite depends on its successful competition with the natural substrate, ligand, modulator or cofactor of a given biomolecule. Antimetabolites are indispensab…

Microbial Natural Products and BiosynthesisEnzyme Structure and FunctionBiochemical and Molecular Research

Thermoelectric properties of chalcogenide based Cu2+xZnSn1−xSe4

C.V.L. Raju、Matthias Falmbigl、P. Rogl 等 8 位作者2013-03-01AIP Advances

Quaternary chalcogenide compounds Cu2+xZnSn1−xSe4 (0 ≤ x ≤ 0.15) were prepared by solid state synthesis. Rietveld powder X-ray diffraction (XRD) refinements combined with Electron Probe Micro Analyses (EPMA, WDS-Wavelength Dispersive Spectroscopy) and Raman spectra of all samples confirmed the stannite structure (Cu2F…

Quantum Dots Synthesis And PropertiesAdvanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin Films

Dynamic precipitation during multi-axial forging of an Mg–7Gd–5Y–1Nd–0.5Zr alloy

Ting Li、Kui Zhang、Xinggang Li 等 7 位作者2013-03-01Journal of Magnesium and Alloys

The dynamic precipitation behavior during multi-axial forging in an Mg–7Gd–5Y–1Nd–0.5Zr alloy has been investigated and compared with that in static precipitation treatment. The results indicated that dynamic precipitation does occur during multi-axial forging. The dynamic precipitate can be deduced as β phase with fa…

Magnesium Alloys: Properties and ApplicationsAluminum Alloy Microstructure PropertiesMetallurgy and Material Forming