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Three-Dimensional Printing of Soy Protein Scaffolds for Tissue Regeneration

Karen B. Chien、Emmanuella Makridakis、Ramille N. Shah2012-10-26Tissue Engineering Part C Methods

Fabricating three-dimensional (3D) porous scaffolds with controlled structure and geometry is crucial for tissue regeneration. To date, exploration in printing 3D natural protein scaffolds is limited. In this study, soy protein slurry was successfully printed using the 3D Bioplotter to form scaffolds. A method to veri…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical ApplicationsAdditive Manufacturing and 3D Printing Technologies

Thin-Film ZnO Charge-Trapping Memory Cell Grown in a Single ALD Step

Feyza Oruç、Furkan Çimen、Ayman Rizk 等 6 位作者2012-10-26IEEE Electron Device Letters

A thin-film ZnO-based single-transistor memory cell with a gate stack deposited in a single atomic layer deposition step is demonstrated. Thin-film ZnO is used as channel material and charge-trapping layer for the first time. The extracted mobility and subthreshold slope of the thin-film device are 23$\hbox{cm}^{2}/\h…

ZnO doping and propertiesSemiconductor materials and devicesThin-Film Transistor Technologies

Precise Structural Development and its Correlation to Function in Conjugated Polymer: Fullerene Thin Films by Controlled Solvent Annealing

Huipeng Chen、Sheng Hu、Huidong Zang 等 5 位作者2012-10-26Advanced Functional Materials

Abstract The impact of controlled solvent vapor exposure on the morphology, structural evolution, and function of solvent‐processed poly(3‐hexylthiophene):[6,6]‐phenyl‐C61‐butyric acid methyl ester (P3HT:PCBM) bilayers is presented. Grazing incident wide angle X‐ray scattering (GIWAXS) shows that the crystallization o…

Organic Electronics and PhotovoltaicsGraphene research and applicationsConducting polymers and applications

Urea, a Structure Breaker? Answers from THz Absorption Spectroscopy

Stefan Funkner、Martina Havenith、Gerhard Schwaab2012-10-26The Journal of Physical Chemistry B

There has been a controversial debate of whether urea can be regarded as structure breaker or a structure maker. Here, we present concentration and temperature dependent absorption coefficients of urea-water mixtures in the THz range (1.5-10 THz, 50-350 cm(-1)). Our results are in agreement with the hypothesis that ur…

Advanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds

MnO Nanocrystals: A Platform for Integration of MRI and Genuine Autophagy Induction for Chemotherapy

Yang Lü、Li Zhang、Jing Li 等 14 位作者2012-10-26Advanced Functional Materials

Abstract Herein, a kind of novel monocomponent hydrophilic and paramagnetic manganese(II) oxide nanocrystal is prepared in polar solution by a one‐pot microwave‐assisted synthesis. This kind of nanocrystal can be taken up efficiently to serve as an excellent T1 magnetic resonance imaging (MRI) contrast agent with an e…

Nanoparticle-Based Drug DeliveryAutophagy in Disease and TherapyCarbon and Quantum Dots Applications

The low-temperature, high-magnetic-field critical current characteristics of Zr-added (Gd,Y)Ba2Cu3Oxsuperconducting tapes

V. Selvamanickam、Yan Yao、Y Chen 等 10 位作者2012-10-26Superconductor Science and Technology

Critical current performances of state-of-the-art Zr-added (Gd, Y)BaCuO tapes have been investigated over a temperature range of 20–77 K, in magnetic fields up to 9 T and over a wide angular range of magnetic field orientations. The peak in critical current that is commonly observed in the field orientation perpendicu…

Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsSuperconductivity in MgB2 and Alloys

Fabrication and enhanced dielectric properties of graphene–polyvinylidene fluoride functional hybrid films with a polyaniline interlayer

Jiwu Shang、Yihe Zhang、Li Yu 等 8 位作者2012-10-26Journal of Materials Chemistry A

Graphene–polyvinylidene fluoride hybrid films (GPNs–PVDF) with a polyaniline (PANI) interlayer are fabricated by a facile and effective process. The morphology of the graphene–polyaniline nanoflakes (GPNs) is examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and the interaction…

Advanced Sensor and Energy Harvesting MaterialsElectromagnetic wave absorption materialsDielectric materials and actuators

Detection of cancer cells using a peptidenanotube–folic acid modified graphene electrode

John J. Castillo、Winnie Edith Svendsen、Noémi Rozlosnik 等 6 位作者2012-10-26The Analyst

This article describes the preparation of a graphene electrode modified with a new conjugate of peptide nanotubes and folic acid for the selective detection of human cervical cancer cells over-expressing folate receptors. The functionalization of peptide nanotubes with folic acid was confirmed by fluorescence microsco…

Advanced biosensing and bioanalysis techniquesElectrochemical sensors and biosensorsSupramolecular Self-Assembly in Materials

Photonic crystal light-emitting sources

Aurélien David、H. Benisty、Claude Weisbuch2012-10-26Reports on Progress in Physics

Photonic crystals (PhCs) are periodically structured optical media offering the opportunity for spontaneous emission (SpE) to be strongly controlled in spatial terms (directions) or in absolute terms (rates). We discuss the application of this concept for practical light-emitting sources, summarizing the principles an…

Photonic and Optical DevicesPhotonic Crystals and ApplicationsOptical Coatings and Gratings

Visible-Light-Absorption in Graphitic C3N4Bilayer: Enhanced by Interlayer Coupling

Fang Wu、Yunfei Liu、Guanxia Yu 等 6 位作者2012-10-26The Journal of Physical Chemistry Letters

Although graphitic C 3 N 4 (g-C 3 N 4 ) has been demonstrated to be a potential candidate for solar cell absorber and photovoltaic materials, the application has been limited by the low photoconversion efficiency in the visible range. Here, we explored that a g-C 3 N 4 bilayer has much better visible-light adsorption…

Advanced Photocatalysis TechniquesZnO doping and properties2D Materials and Applications

Growth, nanostructure and vortex pinning in superconducting YBa 2 Cu 3 O 7 thin films based on trifluoroacetate solutions

X. Obradors、Teresa Puig、Susagna Ricart 等 7 位作者2012-10-26Superconductor Science and Technology

Chemical solution deposition (CSD) is a very competitive technique to obtain epitaxial films and multilayers of high quality with controlled nanostructures.Based on the strong attractiveness from the cost point of view, the production of long length coated conductors based on the CSD approach is being extensively deve…

Physics of Superconductivity and MagnetismZnO doping and propertiesCopper Interconnects and Reliability

miR-15a and miR-16 affect the angiogenesis of multiple myeloma by targeting VEGF

Chunyan Sun、Xiao‐Mei She、You Qin 等 8 位作者2012-10-26Carcinogenesis

Deregulated microRNAs (miRNAs) and their roles in cancer development have attracted much attention. Two miRNAs, miR-15a and miR-16, which act as putative tumor suppressor by targeting the oncogene BCL2, have been implicated in cell cycle, apoptosis and proliferation. In this study, we investigated the possible role of…

MicroRNA in disease regulationCircular RNAs in diseasesMXene and MAX Phase Materials

Ultralow Doping in Organic Semiconductors: Evidence of Trap Filling

Selina Olthof、Shafigh Mehraeen、Swagat K. Mohapatra 等 8 位作者2012-10-26Physical Review Letters

Tail states in organic semiconductors have a significant influence on device performances by acting as traps in charge transport. We present a study of the controlled passivation of acceptor tail states in fullerene C(60) by the addition of electrons introduced by molecular n doping. Using ultralow doping, we are able…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications

Nanoengineered Polypyrrole‐Coated Fe2O3@C Multifunctional Composites with an Improved Cycle Stability as Lithium‐Ion Anodes

Fei Han、Duo Li、Wen‐Cui Li 等 6 位作者2012-10-26Advanced Functional Materials

Abstract Novel multifunctional composites composed of highly dispersed nanosized Fe2O3 particles, a tubular mesoporous carbon host, and a conductive polypyrrole (PPy) sealing layer are hierarchically assembled via two facile processes, including bottom‐up introduction of Fe2O3 nanoparticles in tubular mesoporous carbo…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies

Production and upgrading of 5-hydroxymethylfurfural using heterogeneous catalysts and biomass-derived solvents

Jean Marcel R. Gallo、David Martín Alonso、Max A. Mellmer 等 4 位作者2012-10-26Green Chemistry

High yields of HMF from glucose can be achieved using biomass-derived solvents and a combination of solid Lewis and Brønsted catalysts in a salt-free reaction system. The HMF produced in this system can be oxidized to FDCA or hydrogenated to DMF, both being high-value chemicals.

Supercapacitor Materials and FabricationCatalysis for Biomass ConversionCatalysis and Hydrodesulfurization Studies

Graphene oxide as a promising photocatalyst for CO 2 to methanol conversion

Hsin‐Cheng Hsu、Indrajit Shown、Hsieh-Yu Wei 等 11 位作者2012-10-26Nanoscale

Photocatalytic conversion of carbon dioxide (CO(2)) to hydrocarbons such as methanol makes possible simultaneous solar energy harvesting and CO(2) reduction, two birds with one stone for the energy and environmental issues. This work describes a high photocatalytic conversion of CO(2) to methanol using graphene oxides…

Advanced Photocatalysis TechniquesGas Sensing Nanomaterials and SensorsCovalent Organic Framework Applications

Smaller Sulfur Molecules Promise Better Lithium–Sulfur Batteries

Sen Xin、Lin Gu、Nahong Zhao 等 7 位作者2012-10-26Journal of the American Chemical Society

The lithium-sulfur battery holds a high theoretical energy density, 4-5 times that of today's lithium-ion batteries, yet its applications have been hindered by poor electronic conductivity of the sulfur cathode and, most importantly, the rapid fading of its capacity due to the formation of soluble polysulfide intermed…

Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesMXene and MAX Phase Materials

Low-temperature synthesis and particle size effect on photoluminescence of YVO4:Eu nanocrystals

L. Robindro Singh、S. Dorendrajit Singh、R. K. Thapa2012-10-26Journal of Experimental Nanoscience

Strong-luminescence YVO4:Eu nanoparticles were prepared by wet chemical reaction at 155°C. Energy transfer processes from V–O and Eu–O to Eu3+ and f–f transition of Eu3+ are identified. Luminescence intensity is highest when excited through V–O charge transfer band. Also, luminescence intensity increases with heat tre…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies

Specific heat versus field for LiFe1−xCuxAs

J S Kim、G R Stewart、L Y Xing 等 5 位作者2012-10-26Journal of Physics Condensed Matter

LiFeAs is one of the new class of iron superconductors with a bulk [Formula: see text] in the 15-17 K range. We report on the specific heat characterization of single crystal material prepared by self-flux growth techniques with significantly improved properties, including a much decreased residual gamma, γ(r) (≡C/T a…

Physics of Superconductivity and MagnetismIron-based superconductors researchSuperconductivity in MgB2 and Alloys

Computational Modeling of Grain Boundaries in ZrB 2 : Implications for Lattice Thermal Conductivity

John W. Lawson、Murray S. Daw、Thomas H. Squire 等 4 位作者2012-10-26Journal of the American Ceramic Society

A combination of ab initio , atomistic, and finite element methods ( FEM ) was used to investigate fundamental properties of grain boundaries and grain boundary networks and their impact on lattice thermal conductivity in the ultra high‐temperature ceramic ZrB 2 . The structure, energetics, and lattice thermal conduct…

Advanced ceramic materials synthesisThermal properties of materialsBoron and Carbon Nanomaterials Research