Maria Pia Donzello、Elisa Viola、Xiaohui Cai 等 9 位作者2008-04-28Inorganic Chemistry
New palladium(II) complexes of the free-base tetrakis[2,3-(5,6-di-2-pyridylpyrazino)porphyrazine], [Py 8TPyzPzH 2], have been prepared and their physicochemical properties examined. The investigated compounds are the pentanuclear species [(PdCl 2) 4Py 8TPyzPzPd], the monopalladated complex [Py 8TPyzPzPd], and its corr…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Kazuyuki Nobusawa、Atsushi Ikeda、Jun‐ichi Kikuchi 等 6 位作者2008-04-28Angewandte Chemie International Edition
Complex control of solubility: Single-walled nanotubes (SWNTs) can be dissolved in organic solvents by formation of a complex with a 2,2′-bipyridine derivative and Cu through mechanochemical high-speed vibration milling. The conformational change of the CuI/CuII complexes resulting from chemical oxidation–reduction re…
Carbon Nanotubes in CompositesPorphyrin and Phthalocyanine ChemistryForce Microscopy Techniques and Applications
Hirohiko Kitsuki、Toshishige Yamada、Drazen Fabris 等 7 位作者2008-04-28Applied Physics Letters
Current-induced breakdown is investigated for carbon nanofibers (CNF) for potential interconnect applications. The measured maximum current density in the suspended CNF is inversely proportional to the nanofiber length and is independent of diameter. This relationship can be described with a heat transport model that…
Advancements in Battery MaterialsCarbon Nanotubes in CompositesGraphene research and applications
Tong Wei、Y. J. Guo、P. W. Wang 等 7 位作者2008-04-28Applied Physics Letters
We investigate the effect of Ru doping on the dielectric and ferroelectric behaviors of polycrystalline Sr0.9Ba0.1TiO3. It is observed that the Ru doping significantly suppresses the ferroelectric mode, as evidenced by the Raman spectroscopy at various temperatures. The enhanced quantum fluctuation associated with the…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Ningzhong Bao、Liming Shen、Prahallad Padhan 等 4 位作者2008-04-28Applied Physics Letters
Ordered arrays of monodisperse cobalt ferrite (CoFe2O4) nanocrystals with highly controllable spherical or cubic shapes have been synthesized via solution-based thermolysis of an intimately mixed Co2+Fe23+-oleate precursor. The evolution from spherical to cubic morphology is achieved by simply changing the precursor c…
Magnetic properties of thin filmsMagnetic Properties and Synthesis of FerritesIron oxide chemistry and applications
Amit V. Mahulkar、Pratap S. Bapat、Aniruddha B. Pandit 等 4 位作者2008-04-28AIChE Journal
Abstract Generating hydrodynamic/ acoustic cavitation (Gogate et al.) for a useful purpose encompasses the following energy transformation steps: (1) Burning fuel in boiler. (2) Expanding the steam in a turbine generator. (3) Using electrical output from the generator to: (a) Pump water through a mechanical constricti…
Combustion and Detonation ProcessesUltrasound and Cavitation Phenomena
Adam Bymaster、Shekhar Jain、Walter G. Chapman2008-04-28The Journal of Chemical Physics
By using a classical density functional theory (interfacial statistical associating fluid theory), we investigate the structure and effective forces in nonadsorbing polymer-colloid mixtures. The theory is tested under a wide range of conditions and performs very well in comparison to simulation data. A comprehensive s…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesPickering emulsions and particle stabilization
Jixiang Fang、Bingjun Ding、Xiaoping Song 等 4 位作者2008-04-28Applied Physics Letters
In this paper, we demonstrate how a silver dendrite transforms from mesocrystal into single crystal and the stability for a dendritic silver mesocrystal within a Sn∕AgNO3 galvanic replacement reaction. Our findings provide the direct evidence and visible picture of the transformation from mesocrystal to single crystal…
Gold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and Applicationsnanoparticles nucleation surface interactions
Vibha Kalra、Sergio Mendez、Fernando A. Escobedo 等 4 位作者2008-04-28The Journal of Chemical Physics
We present molecular dynamics simulations coupled with a dissipative particle dynamics thermostat to model and simulate the behavior of symmetric diblock copolymer/nanoparticle systems under simple shear flow. We consider two categories of nanoparticles, one with selective interactions toward one of the blocks of a mo…
Advanced Polymer Synthesis and CharacterizationSurfactants and Colloidal SystemsBlock Copolymer Self-Assembly
Aurelian Marcu、Takeshi Yanagida、Kazuki Nagashima 等 6 位作者2008-04-28Applied Physics Letters
Although a heterointerface in oxides plays a crucial role on the properties, such heterointerface effects on oxide nanowires have not been well understood. Here, we demonstrate the crucial role of atomic interdiffusion on the magnetic properties of in situ formed MgO∕Fe3−δO4 heterostructured nanowires. The wide variat…
ZnO doping and propertiesMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
M. L. Baron、Jerzy Bławzdziewicz、Eligiusz Wajnryb2008-04-28Physical Review Letters
Simulations of over 10;{3} hydrodynamically coupled solid spheres are performed to investigate collective motion of linear trains and regular square arrays of particles suspended in a fluid bounded by two parallel walls. Our novel accelerated Stokesian-dynamics algorithm relies on simplifications associated with the H…
Material Dynamics and PropertiesGranular flow and fluidized bedsPickering emulsions and particle stabilization
Michael Huang、Ye Zhou、Connie J. Chang-Hasnain2008-04-28Applied Physics Letters
We present a single mode vertical-cavity surface-emitting laser (VCSEL) utilizing a single-layer, high-contrast subwavelength grating (HCG) based top mirror, which provides both the ultrahigh reflectivity and lateral transverse modes control. Experimentally, we demonstrate that merely 11 HCG stripes with a thickness o…
Photonic and Optical DevicesSemiconductor Lasers and Optical DevicesOptical Coatings and Gratings
Joonhee M. An、Marco Califano、Alberto Franceschetti 等 4 位作者2008-04-28The Journal of Chemical Physics
In solids the phonon-assisted, nonradiative decay from high-energy electronic excited states to low-energy electronic excited states is picosecond fast. It was hoped that electron and hole relaxation could be slowed down in quantum dots, due to the unavailability of phonons energy matched to the large energy-level spa…
Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Chun Tang、Wanlin Guo、Changfeng Chen2008-04-28Physical Review Letters
We report molecular dynamics simulations of the recently discovered superelongation of carbon nanotubes (CNTs) at high temperatures. The nearly simultaneous activation and wide distribution of a large number of defects near the elastic limit play a key role in impeding the formation of localized predominant instabilit…
Carbon Nanotubes in CompositesForce Microscopy Techniques and ApplicationsMechanical and Optical Resonators
Dong‐Wan Kim、Young-Jin Choi、Kyoung Jin Choi 等 11 位作者2008-04-28Nanotechnology
In this paper we report the fabrication and testing of diode-type low-voltage field emission display (FED) devices with SiC-nanowire-based cathodes. The SiC-nanowire FEDs (flat vacuum lamps) were characterized by low emission threshold fields (∼2 V µm(-1)), high current density and stable long-term performance. The an…
Carbon Nanotubes in CompositesSilicon Carbide Semiconductor TechnologiesSemiconductor materials and devices
M.N.W. Groenendijk2008-04-28Laser Technik Journal
Abstract The chair of Applied Laser Technology of the University of Twente, The Netherlands, is performing research into applications of ultrashort pulsed lasers for micromachining. In a recent project, PhD student Max Groenendijk developed a method for the production of super water repellant surfaces by injection mol…
Surface Modification and SuperhydrophobicityLaser Material Processing Techniques
Desheng Fu、Makoto Endo、Hiroki Taniguchi 等 6 位作者2008-04-28Applied Physics Letters
We report the growth and the piezoelectric properties of lead-free perovskite single crystals of Ag1−xLixNbO3. It possesses a rhombohedral structure with high ferroelectric phase transition (Tc=548K for x=0.086) and large spontaneous polarization (Ps∼40μC∕cm2 for x=0.062) along the ⟨111⟩c direction of pseudocubic pero…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
Jingping Wang、Pengtao Ma、Jie Li 等 5 位作者2008-04-28Chemistry - An Asian Journal
Rational self-assembly of Sb(2)O(3) and Na(2)WO(4), or (NH(4))(18)[NaSb(9)W(21)O(86)] with transition-metal ions (Mn(2+), Cu(2+), Co(2+)), in aqueous solution under controlled conditions yield a series of sandwich type complexes, namely, Na(2)H(2)[Mn(2.5)W(1.5)(H(2)O)(8)(B-beta-SbW(9)O(33))(2)]32 H(2)O (1), Na(4)H(7)[…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry
Guochu Deng、Nicolas Xanthopoulos、Paul Muralt2008-04-28Applied Physics Letters
Epitaxial CaCu3Ti4O12 thin films grown by pulsed laser deposition were studied in the as-deposited and oxygen annealed state. The first one exhibited the usual transition from dielectric to colossal dielectric behavior upon increasing the temperature to above 100K. This transition disappeared after annealing at 900°C…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics
Lan Lin、Wei Wang、Jianhua Cui 等 5 位作者2008-04-28Optics Express
We designed an electromagnetic refractor and a phase transformer using form-invariant coordinate transformation of Maxwell's equations. The propagation direction of electromagnetic energy in these devices can be modulated as desired. Unlike the conventional dielectric refractor, electromagnetic fields at our refractio…
Metamaterials and Metasurfaces ApplicationsMicrowave Engineering and WaveguidesAdvanced Antenna and Metasurface Technologies