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A new strategy for synthesis of microspheres amphiphilic block copolymer based on Epichlorohydrin and N-viny-2-pyrrolidone induced by an ecologic clay catalyst called Maghnite-H+ (Algerian MMT)

Abdelkader Rahmouni、Djelloul Bendaho、Ferrahi Mohammed Issam 等 4 位作者2013-09-13International Journal of Scientific World

Biodegradable copolymer microsphere poly (ECH-co-NVP) was synthesized by a ring-opening polymerization process of Epichlorohydrin and N-vinyl-2-pyrrolidone.The copolymerization of Epichlorohydrin (ECH) and N-vinyl-2pyrrolidone (NVP) catalyzed by Maghnite-H + (Mag-H + ) was investigated. The effect of some factors such…

Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesClay minerals and soil interactions

Mechanochemically-Active Polymer Composites

Jeffrey S. Moore、Paul V. Braun、Christopher W. Bielawski 等 6 位作者2013-09-13OpenAlex

Abstract : Progress during the prior funding period includes understanding of fracture-induced mechanophore activation, development of a new computational model for predicting mechanochemical phenomena, and the development of new analytical techniques to study mechanochemistry. These studies are making it possible to…

Carbon Nanotubes in CompositesForce Microscopy Techniques and ApplicationsMechanical and Optical Resonators

Pharmacokinetics: Nanoparticle Accumulation in Angiogenic Tissues: Towards Predictable Pharmacokinetics (Small 18/2013)

Kristin Yaehne、Amy Tekrony、Aisling A. Clancy 等 12 位作者2013-09-13Small

D. Cramb* and co-workers report on page 3118 that nanoparticles circulating in angiogenic tissue partition into surrounding tissues through fenestrations in the blood vessel walls, depending on the nanoparticle properties. The dependence of the portioning rate on nanoparticle size suggests that the mechanism is largel…

Nanoparticle-Based Drug Delivery3D Printing in Biomedical ResearchMathematical Biology Tumor Growth

Multifactor, Sequentially Releasing Scaffolds for Tissue Engineering:Fabrication Using Solvent/Nonsolvent Sintering Technology

Nitsa Ne'eman、Daphna Marbach、Limor Chen‐Konak 等 8 位作者2013-09-13Israel Journal of Chemistry

Abstract Biodegradable constructs, providing both mechanical support to growing tissues and timed release of biological agents, are highly desired in tissue engineering. This study aimed to develop a platform technology that responds to these challenges. Accordingly, we report herein on model systems in which microsph…

Bone Tissue Engineering Materialsbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Time-resolved pump-probe spectroscopy of intraband absorption by a semiconductor nanorod

Mikhail Yu. Leonov、Ivan D. Rukhlenko、А. В. Баранов 等 4 位作者2013-09-13Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

We develop a theory of time-resolved pump–probe optical spectroscopy of intraband absorption of a probe pulse inside an anisotropic semiconductor nanorod. The absorption is preceded by the absorption of the pump pulse resonant to an interband transition. It is assumed that the resonantly exited states of the nanorod a…

Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesMolecular Junctions and Nanostructures

Spectroscopy of intraband optical transitions in anisotropic semiconductor nanocrystals

Vadim K. Turkov、Anvar S. Baimuratov、Ivan D. Rukhlenko 等 5 位作者2013-09-13Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

We propose a new type of optical spectroscopy of anisotropic semiconductor nanocrystals, which is based on the welldeveloped stationary pump-probe technique, where the pump and probe fields are absorbed upon, respectively, interband and intraband transitions of the nanocrystals’ electronic subsystem. We develop a gene…

Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

Effect of water absorption on pristine and ion-irradiated kapton-H polyimide using thermally stimulated depolarization current technique

Anu Sharma、J. K. Quamara2013-09-13Radiation effects and defects in solids

In this paper we report the effect of water absorption on pristine and 75 MeV oxygen ion-irradiated kapton-H polyimide by using the thermally stimulated depolarization current (TSDC) technique. The TSDC spectra reveal two significant peaks at low and intermediate temperatures around 30°C and 110°C termed as γ-peak (ab…

Conducting polymers and applicationsDielectric materials and actuatorsPolymer Nanocomposite Synthesis and Irradiation

Concentration Effect on Photoluminescence Tests of the CdSe Colloid Nanocrystal System

Zhonghai Lin、Zhilin Zhu、Minqiang Wang 等 8 位作者2013-09-13Journal of Testing and Evaluation

Abstract In this study, monodispersed CdSe nanocrystal (NCs) were prepared by means of solution-phase synthesis. CdSe/CdS NCs were synthesized via successive ion layer adsorption and reaction on CdSe core NCs. The optical properties of CdSe and CdSe/CdS core/shell NCs dissolved in different solvents were investigated.…

Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

Molecular nature of PbS nanoclusters attached on the silica spheres

Kwang‐Sun Kang2013-09-13Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

The mixture of phenyltrimethoxysilane (PTMS) and mercaptopropyltrimethoxysilane (MPTMS) has been covalently bonded to the surface of the monodisperse silica spheres to attach the PbS nanoclusters. The Fourier transform infrared (FTIR) spectra of the modified silica spheres (MSSPh) with PTMS and MPTMS clearly indicates…

Quantum Dots Synthesis And PropertiesPlant and animal studiesSpectroscopy and Quantum Chemical Studies

Pengaruh Berat Molekul Alpha Sellulosa Terhadap Sifat Mekanik Komposit Polimer Dari Matriks Polipropilena- Polipropilena Tergrafting Maleat Anhidrida dan Divinil Benzena

Marpongahtun、Reni Silvia Nasution、Darwin Yunus Nasution 等 4 位作者2013-09-13Prosiding SEMIRATA 2013

Pembuatan komposit polimer dari matriks polipropilena-polipropilena tergrafting maleat anhidrida dengan divinil benzena sebagai agen pengikat silang dan alpha sellulosa dengan berat molekul yang berbeda telah dilakukan. Alpha sellulosa diperoleh dari ampas tebu dan alang-alang berdasarkan metode Okhamafe. Penentuan be…

Polymer Nanocomposites and PropertiesEngineering and Technology InnovationsWaste Management and Recycling

Spin-transfer torque switching below 20 kA/cm$^2$ in perpendicular magnetic tunnel junctions

Johannes Christian Leutenantsmeyer、Marvin Walter、Steffen Wittrock 等 7 位作者2013-09-13arXiv (Cornell University)

We demonstrate the reduction of critical spin-transfer torque (STT) switching currents in Co-Fe-B/MgO based magnetic tunnel junctions (MTJ) with perpendicular magnetization anisotropy (PMA). The junctions yield tunnel magnetoresistance (TMR) ratios of up to 64% at 4 monolayer (ML) tunnel barrier thickness. In this pap…

Magnetic properties of thin filmsQuantum and electron transport phenomenaMagnetic Properties of Alloys

Phonon Anomalies And Phase Transitions In Pyrochlore Titanates, Boron Nitride Nanotubes And Multiferroic BiFeO3 : Temperature- And Pressure-Dependent Raman Studies

Surajit Saha2013-09-13OpenAlex

This thesis presents experimental and related theoretical studies of pyrochlore titanate oxides, boron nitride nanotubes, and multiferroic bismuth ferrite. We have investigated these systems at high pressures and at low temperatures using Raman spectroscopy. Below, we furnish a synoptic presentation of our work on the…

Solid-state spectroscopy and crystallographyAdvanced Physical and Chemical Molecular InteractionsX-ray Diffraction in Crystallography

Análise microestrutural de junta brasada de aço inoxidável duplex UNS S32101, UNS S32304, UNS S32750 e UNS S32707 com metal de adição a base de níquel.

Dany Michell Andrade Centeno2013-09-13OpenAlex

\n Os aços inoxidáveis duplex (AID) caracterizam-se pela sua microestrutura composta por austenita numa matriz ferrítica, com fração volumétrica média de 50% para cada fase. A combinação destas características confere-lhes excelente resistência mecânica e à corrosão. A soldagem/junção destes aços é frequentemente uma…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual Stresses

疏水性Cosalen/SBA-15的制备及在甲苯选择性氧化中的应用

邓莹、袁佩、袁霞 等 5 位作者2013-09-13高等学校化学学报

以介孔分子筛SBA-15为载体, 先采用 γ -氨丙基三乙氧基硅烷(APTES)进行氨基硅烷化修饰, 然后经甲基三乙氧基硅烷(MTES)疏水修饰后固载双水杨醛缩乙二胺合钴配合物(Cosalen). 采用傅里叶变换红外光谱、 紫外-可见漫反射光谱、 X射线光电子能谱、 元素分析、 等离子体发射光谱、 X射线衍射和氮气物理吸附等手段对制备的固载型催化剂Cosalen/SBA-15进行了物相结构和修饰程度的表征, 并考察了样品对甲苯、 苯甲醛和苯甲醇的吸附性能及在甲苯液相氧化反应中的催化性能. 结果表明, 固载型催化剂Cosalen/SBA-15的介孔结构和孔道有序性保持良好, Cosalen通过与氨基配位固载在修饰后的载体SBA-15…

Polyoxometalates: Synthesis and ApplicationsLayered Double Hydroxides Synthesis and ApplicationsCovalent Organic Framework Applications

Self-organized nanostructures by heavy ion irradiation: defect kinetics and melt pool dynamics

Roman Böttger2013-09-13Qucosa (Saxon State and University Library Dresden)

Self-organization is a hot topic as it has the potential to create surface patterns on the nanoscale avoiding cost-intensive top-down approaches. Although chemists have promising results in this area, ion irradiation can create self-organized surface patterns in a more controlled manner. Different regimes of pattern f…

Microstructure and mechanical propertiesIon-surface interactions and analysisIntegrated Circuits and Semiconductor Failure Analysis

Mechanical control of heat conductivity in microscopic models of dielectrics

A. V. Savin、Oleg Gendelman2013-09-13arXiv (Cornell University)

We discuss a possibility to control a heat conductivity in simple one-dimensional models of dielectrics by means of external mechanical loads. To illustrate such possibilities we consider first a well-studied chain with degenerate double-well potential of the interparticle interaction. Contrary to previous studies, we…

Material Dynamics and PropertiesForce Microscopy Techniques and ApplicationsThermal properties of materials

Electric Brass Furnace Practice

H. W. Gillett、E. L. Mack2013-09-13University of North Texas Digital Library (University of North Texas)

Report discussing 1) the pertinent information available on what electric furnaces can do to assist prospective users in selecting a furnace that fits their requirements and 2) the gradual evolution of the present commercial types of electric furnaces. Also discusses some of the fundamental principles in the design, c…

Metallurgy and Material Science

Pengaruh Senyawa Turunan Kaliksarena Dalam Menghambat Pembentukan Kerak Kalsium Karbonat (CaCO3)

Suharso Suharso、Buhani Buhani、Liza Aprilia2013-09-13Prosiding SEMIRATA 2013

Efek penambahan senyawa turunan kaliksarena yang larut dalam air 5,11,17,23-tetra(dimetilamino) metil-4,6,10,12,16,18,22,24-oktahidroksi-2,8,14,20-tetrametil kalik[4]arena (TDMACMKR) terhadap pembentukan endapan kerak kalsium karbonat telah diamati dengan menggunakan metode seeded experiment dan bottle roller bath . P…

Calcium Carbonate Crystallization and Inhibition

Tailored Nanoparticles for Clean Technology–Achieving Size and Shape Control

Vladimir B. Golovko2013-09-13OpenAlex

Size and shape effects are discussed, in depth, using examples of selected industrially relevant processes with particular emphasis on the fabrication and characterisation of materials, and the modelling and testing of their structure-property relationships.

Catalytic Processes in Materials Sciencenanoparticles nucleation surface interactionsNanomaterials for catalytic reactions