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Electronic Structure of CdSe Nanoparticles Adsorbed on Au Electrodes by an Organic Linker: Fermi Level Pinning of the HOMO

Tal Z. Markus、Ming‐Chung Wu、L. Wang 等 6 位作者2009-07-06The Journal of Physical Chemistry C

Assemblies of CdSe nanoparticles (NPs) on a dithiol-coated Au electrode were created, and their electronic energetics were quantified. This report describes the energy level alignment of the filled and unfilled electronic states of CdSe nanoparticles with respect to the Au Fermi level. Using cyclic voltammetry, it was…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsMolecular Junctions and Nanostructures

Characterization of Water Wires inside Hydrophobic Tubular Peptide Structures

U.S. Raghavender、S. Aravinda、N. Shamala 等 5 位作者2009-07-06Journal of the American Chemical Society

The crystallographic observation of a hydrophobic, empty channel (diameter approximately 5.2 A) in the peptide Boc-(D)Pro-Aib-Leu-Aib-Val-OMe, prompted the investigation of the analog Boc-(D)Pro-Aib-Val-Aib-Val-OMe in which the side chain at position 3 was shortened, resulting in the structure of a channel (diameter a…

Lipid Membrane Structure and BehaviorSupramolecular Self-Assembly in MaterialsNanopore and Nanochannel Transport Studies

Paclitaxel encapsulated in cationic liposomes: A new option for neovascular targeting for the treatment of prostate cancer

Trojan2009-07-06Oncology Reports

Neovascular targeting is an established approach for the therapy of prostate cancer (PCa). Cationic liposomes have been shown to be absorbed by immature vascular endothelial cells due to negative electric charge of their outer cell membrane. We aimed to evaluate the antitumoural efficacy of paclitaxel encapsulated in…

Nanoparticle-Based Drug DeliveryProstate Cancer Treatment and ResearchNanoplatforms for cancer theranostics

Flexoelectric effect in a bent-core mesogen

Khoa V. Le、Fumito Araoka、Katalin Fodor‐Csorba 等 5 位作者2009-07-06Liquid Crystals

The flexoelectricity in a bent-core liquid crystal was evaluated quantitatively using two independent electrooptic methods. The absolute value of the bend flexoelectric coefficient e 3 was measured to be about 15.8 pC m−1. Our results revealed that there is little difference between the flexoelectricity of bent-core m…

Liquid Crystal Research AdvancementsForce Microscopy Techniques and ApplicationsAdvanced Materials and Mechanics

Production and processing of spider silk proteins

John G. Hardy、Thomas Scheibel2009-07-06Journal of Polymer Science Part A Polymer Chemistry

Abstract Natural spider silk fibers have impressive mechanical properties (outperforming many man‐made fibers) and are, moreover, biocompatible, biodegradable, and produced under benign conditions (using water as a solvent at ambient temperature). The problems associated with harvesting natural spider silks inspired u…

Silk-based biomaterials and applicationsPhytochemical compounds biological activitiesSilkworms and Sericulture Research

Multiband left-handed metamaterials

Jiafu Wang、Shabo Qu、Yiming Yang 等 6 位作者2009-07-06Applied Physics Letters

A method of realizing multiband left-handed metamaterials (MB-LHMs) was presented. By alternatively stacking arrays of unit cells with different geometrical dimensions, the combined structures exhibit multiple LH passbands. As an example, a typical MB-LHM was designed, fabricated, and investigated numerically and expe…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Neutron diffraction investigation of the magnetic structure and magnetoelastic effects in NdMnO3

Tapan Chatterji、B. Ouladdiaf、Dipten Bhattacharya2009-07-06Journal of Physics Condensed Matter

We investigated the evolution of the magnetic structure and magnetoelastic effects of NdMnO(3) by neutron powder diffraction. We confirmed the A-type antiferromagnetic (AF) structure of NdMnO(3) below T(N)≈82 K with magnetic moments parallel to the b axis of the orthorhombic crystal structure (space group Pbnm). We fo…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Preparation of Mesoporous Pt−Ru Alloy Fibers with Tunable Compositions via Evaporation-Mediated Direct Templating (EDIT) Method Utilizing Porous Anodic Alumina Membranes

Azusa Takai、Takahiro Saida、Wataru Sugimoto 等 6 位作者2009-07-06Chemistry of Materials

Synthesis of composition-controlled mesoporous Pt−Ru alloy fibers by a dual-templating method (Yamauchi et al. J. Am. Chem. Soc., 2008, 130, 5426−5427) is demonstrated using lyotropic liquid crystals (LLCs) as mesostructural direct templates and porous anodic alumina membranes (PAAMs) as morphological direct templates…

Mesoporous Materials and CatalysisAnodic Oxide Films and NanostructuresNanoporous metals and alloys

Magnetic Resonance Molecular Imaging of Vascular Cell Adhesion Molecule-1 Expression in Inflammatory Lesions Using a Peptide-Vectorized Paramagnetic Imaging Probe

Carmen Burtéa、Sophie Laurent、Marc Port 等 10 位作者2009-07-06Journal of Medicinal Chemistry

The vascular cell adhesion molecule-1 (VCAM-1) has distinct roles in inflammatory cell recruitment to the damaged vessel wall. In the present work, a cyclic heptapeptide phage displayed library was screened in vitro during four rounds of biopanning. On the basis of Kd and IC50 values, a peptide (encoded as R832) was s…

Nanoparticle-Based Drug DeliveryNanoplatforms for cancer theranosticsCell Adhesion Molecules Research

Regioregular poly(3-hexyl-thiophene) helical self-organization on carbon nanotubes

Michele Giulianini、Eric R. Waclawik、John Bell 等 7 位作者2009-07-06Applied Physics Letters

Mixtures of regioregular poly(3-hexyl-thiophene) (rrP3HT) and multiwall carbon nanotubes have been investigated by scanning tunneling microscopy in ultrahigh vacuum. Carbon nanotubes covered by rrP3HT have been imaged and analyzed, providing a clear evidence that this polymer self-assembles on the nanotube surface fol…

Carbon Nanotubes in CompositesGraphene research and applicationsForce Microscopy Techniques and Applications

Nonsingular two dimensional cloak of arbitrary shape

Jin Hu、Xiaoming Zhou、Gengkai Hu2009-07-06Applied Physics Letters

We propose a general method to circumvent the singularity (infinitely large values of material parameters) of arbitrary two dimensional (2D) cloaks. The presented method is based on the deformation view of the transformation design method. It is shown that by adjusting the principle stretch out of the cloaking plane,…

Metamaterials and Metasurfaces ApplicationsElectromagnetic Scattering and AnalysisAdvanced Antenna and Metasurface Technologies

Biodegradable inflatable balloon for reducing radiation adverse effects in prostate cancer

Yair Levy、Adrian Paz、R. Ben Yosef 等 7 位作者2009-07-06Journal of Biomedical Materials Research Part B Applied Biomaterials

Carcinoma of the prostate is one of the most abundant killers for men in the western world, and it is frequently treated via Radiation therapy. Unfortunately, radiotherapy side effects include rectal irritation and bleeding, erectile dysfunction and urinary frequency. Because radiation intensity decays rapidly as a fu…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Search for transformation from paramagnetic martensite to ferromagnetic austenite: NiMnGaCu alloys

Chengbao Jiang、Jingmin Wang、Panpan Li 等 5 位作者2009-07-06Applied Physics Letters

Search for transformation from paramagnetic martensite to ferromagnetic austenite in ferromagnetic shape memory alloys is performed through designing NiMnGaCu alloys. The composition dependence of the martensitic transformation temperature TM, the magnetic transition temperatures TCA of the austenite and TCM of the ma…

Magnetic and transport properties of perovskites and related materialsShape Memory Alloy Transformations

Photoinduced Charge Separation in Ion-Paired Porphyrin−Single-Wall Carbon Nanotube Donor−Acceptor Hybrids

Atula S. D. Sandanayaka、Raghu Chitta、Navaneetha K. Subbaiyan 等 6 位作者2009-07-06The Journal of Physical Chemistry C

Photoinduced electron transfer in self-assembled (via ion-pairing) porphyrin−single-wall carbon nanotube (SWNT) donor−acceptor hybrids has been demonstrated. Toward this, first, SWNTs were solubilized by π−π stacking of pyrene (Pyr) functionalized with either a cationic (alkyl ammonium; Pyr-NH 3 + ) or anionic (butyri…

Carbon Nanotubes in CompositesPorphyrin and Phthalocyanine ChemistryMolecular Junctions and Nanostructures

Contact Angle Hysteresis and Work of Adhesion of Oil Droplets on Nanosphere Stacking Layers

Chien‐Te Hsieh、Fanglin Wu、Weiyu Chen2009-07-06The Journal of Physical Chemistry C

Surface repellency of liquid droplets with different surface tensions (23.4−73.2 mN/m) on nanostructured surfaces built of one- and two-tier silica sphere stacking surfaces were investigated, and contact angle hysteresis (CAH) and work of adhesion were analyzed. It was shown that the binary nano- and sub-micrometer-sc…

Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferAdhesion, Friction, and Surface Interactions

Self-Assembly of Rod-Shaped Particles in Diblock-Copolymer Templates

Qiyun Tang、Yu‐qiang Ma2009-07-06The Journal of Physical Chemistry B

We investigate the self-assembly of hard rod-shaped particles with an affinity for A block in diblock AB copolymer templates. The results are consistent with a series of recent experimental findings. Furthermore, we construct the phase diagrams of the mixture with different aspect ratios of particles by changing the p…

Advanced Polymer Synthesis and CharacterizationBlock Copolymer Self-AssemblyPickering emulsions and particle stabilization

Harvesting magnetic energy using extensional vibration of laminated magnetoelectric plates

C. L. Zhang、Jiashi Yang、Weiqiu Chen2009-07-06Applied Physics Letters

Magnetically forced extensional vibrations of laminated plates with piezoelectric and piezomagnetic layers are analyzed theoretically. It is shown that such a structure can be used to harvest magnetic energy and convert it to electric energy. The output power and the energy conversion efficiency are calculated. The lo…

Ferroelectric and Piezoelectric MaterialsUltrasonics and Acoustic Wave PropagationMultiferroics and related materials

The dependence of oxygen vacancy distributions in BiFeO3 films on oxygen pressure and substrate

Guoliang Yuan、Lane W. Martin、R. Ramesh 等 4 位作者2009-07-06Applied Physics Letters

The epitaxial (001)-oriented 250 nm BiFeO3/50 nm SrRuO3 films were deposited on DyScO3 and SrTiO3 substrates, respectively. Following the growth, the cooling in lower oxygen pressure results in the creation of oxygen vacancies at the surface of the BiFeO3 film and the epitaxial strain drives these vacancies to diffuse…

Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials

High-Field EPR and Magnetic Susceptibility Studies on Binuclear and Tetranuclear Copper Trifluoroacetate Complexes. X-ray Structure Determination of Three Tetranuclear Quinoline Adducts of Copper(II) Trifluoroacetate

Andrew Ozarowski、Iwona B. Szymańska、Tadeusz M. Muzioł 等 4 位作者2009-07-06Journal of the American Chemical Society

Magnetic properties and high-field EPR spectra of three previously unknown tetranuclear quinoline adducts of copper(II) trifluoroacetate were studied, and their X-ray structures were determined. Two green complexes containing a mu(4)-oxo bridge, Cu(4)O(CF(3)COO)(6)(quin)(4) x (C(6)H(5)CH(3))(0.6) (orthorhombic, Pbca,…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Phase change behavior in oxygen-incorporated Ge2Sb2Te5 films

Moon Hyung Jang、S. J. Park、Dong-Hyeok Lim 等 7 位作者2009-07-06Applied Physics Letters

Oxygen-incorporated Ge2Sb2Te5 (GST) films were deposited using ion beam sputtering deposition. Sheet resistance in films with 16.7% oxygen content decreased at a higher annealing temperature than that of undoped GST films, while resistance in films with an oxygen content of over 21.7% decreased dramatically at lower t…

Glass properties and applicationsChalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenides