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Evidence of a cluster spin-glass state in the B-site disordered perovskite SrTi0.5Mn0.5O3

Shivani Sharma、Poonam Yadav、Tusita Sau 等 8 位作者2019-02-24arXiv

SrTi0.5Mn0.5O3 (STMO) is a chemically disordered perovskite having random distribution of Ti and Mn over 1b site. Striking discrepancies about the structural and magnetic properties of STMO demands detailed analysis which is addressed. To explore the magnetic ground state of STMO, static and dynamic magnetic propertie…

Materials ScienceStrongly Correlated Electrons

Role of oxygen interstitials in Zn1-xGaxO for faster response to UV light

Prashant Kumar Mishra、Tulika Srivastava、Saniya Ayaz 等 6 位作者2019-02-24arXiv

ZnO doped with Gallium (Ga3+) demonstrates better crystalline nature and conductivity increases. Latent defect states are suppressed. However, due to the larger charge of Ga3+ oxygen interstitials are generated which control the sensing speed. The conductance increases as a consequence of reduced defect states, especi…

Materials Science

Selective Defect Formation in Hexagonal Boron Nitride

Irfan H. Abidi、Noah Mendelson、Toan Trong Tran 等 10 位作者2019-02-24arXiv

Luminescent defect-centers in hexagonal boron nitride (hBN) have emerged as a promising 2D-source of single photon emitters (SPEs) due to their high brightness and robust operation at room temperature. The ability to create such emitters with well-defined optical properties is a cornerstone towards their integration i…

Materials ScienceApplied Physicsphysics.optics

A straightforward 2$ω$ technique for the measurement of the Thomson effect

Isaac Haïk Dunn、Ramzy Daou、Colin Atkinson2019-02-24arXiv

We present a simplified, rapid, and accurate method for the measurement of the thermoelectric Thomson coefficient by the dynamical heating of a suspended wire by an alternating current. By applying a temperature gradient across the wire, we find that the response at the second harmonic of the excitation frequency is d…

Materials Science

Size-Controlled Production of Silver Nanoparticles by Aspergillus fumigatus BTCB10: Likely Antibacterial and Cytotoxic Effects

Asma Shahzad、Hamid Saeed、Mehwish Iqtedar 等 11 位作者2019-02-24Journal of Nanomaterials

The biogenesis of silver nanoparticles by fungi is an ecologically clean and nontoxic method compared to other physical and chemical methods. Thus, we aimed to discuss the mycosynthesis of extracellular size-controlled AgNPs. After comprehensive screening, Aspergillus fumigatus BTCB10 (KY486782) was selected for the s…

Bone Tissue Engineering MaterialsNanoparticles: synthesis and applicationsGraphene and Nanomaterials Applications

Jumping on the Bandwagon: A Review on the Versatile Applications of Gold Nanostructures in Prostate Cancer

Monira Sarkis、Esther Ghanem、Kamil Rahme2019-02-23International Journal of Molecular Sciences

Prostate cancer (PCa) has remarkably emerged as a prominent disease in the face of the male population. Conventional treatments like prostatectomy or radiation can be curative only if PCa is diagnosed at an early stage. In the field of targeted therapy, a bevy of novel therapeutic approaches have left a landmark in PC…

Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsNanoplatforms for cancer theranostics

Mapping Molecular Structure of Protein Locating on Nanoparticles with Limited Proteolysis

Yaokai Duan、Yang Liu、Roxana Coreas 等 4 位作者2019-02-23Analytical Chemistry

The molecular structure of a protein could be altered when it is attached to nanoparticles (NPs), affecting the performance of NPs present in biological systems. Limited proteolysis coupled with LC-MS/MS could reveal the changes in protein structure when it binds to a variety of entities, including macro-molecules and…

Nanoparticle-Based Drug DeliveryCharacterization and Applications of Magnetic NanoparticlesGraphene and Nanomaterials Applications

ZnO-Templated Synthesis and Metal-Insulator Transition of VO2 Nanostructures

Xuefei Li、Raymond E. Schaak2019-02-23Chemistry of Materials

Vanadium dioxide (VO 2 ) exhibits a metal-insulator transition (MIT) that is accompanied by steep changes in electrical and optical properties, making it an important component of device architectures that require facile switching between metal and insulating states. VO 2 nanostructures are particularly useful compone…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials

Selective Catalytic Reduction of Nitric Oxide with Propylene over Fe/Beta Catalysts Under Lean-Burn Conditions

Hao Zhou、Mengyao Ge、Huishuang Zhao 等 6 位作者2019-02-23Catalysts

Fe/Beta catalysts were used for the selective catalytic reduction of nitric oxide with propylene (C3H6-SCR) under lean-burn conditions, which were prepared by liquid ion-exchange (LIE), solid-state ion-exchange (SIE), and incipient wet-impregnation (IWI) methods. The iron species on Fe/Beta were characterized and iden…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsNanomaterials for catalytic reactions

Indenting polymer brushes of varying grafting density in a viscous fluid: A gradient approach to understanding fluid confinement

Christian Mathis、Rok Simič、Chengjun Kang 等 6 位作者2019-02-23Polymer

A sound understanding of the fluid-confinement mechanics of soft materials, including polymer brushes or hydrogels, is essential for developing advanced biomedical and engineering applications such as contact lenses or low-friction coatings. In order to elucidate the effect of polymer-chain density on fluid confinemen…

Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsAdhesion, Friction, and Surface Interactions

A comparative study of the interaction of nickel, titanium, palladium, and gold metals with single-walled carbon nanotubes: A DFT approach

Kevin W. Kayang、Emmanuel Nyankson、J.K. Efavi 等 10 位作者2019-02-23Results in Physics

Interactions between transition metal atoms, nickel, titanium, palladium and gold and (3,3), (4,2), (6,0) and (5,1) carbon nanotubes were studied using first principles calculations. The Fermi energy levels of the carbon nanotubes studied were found to increase during interactions with the transition metal atoms. Amon…

Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research

Electroanalytical Performance of Nitrogen-Doped Graphene Films Processed in One Step by Pulsed Laser Deposition Directly Coupled with Thermal Annealing

Florent Bourquard、Yannick Bleu、A.-S. Loir 等 15 位作者2019-02-23Materials

Graphene-based materials are widely studied to enable significant improvements in electroanalytical devices requiring new generations of robust, sensitive and low-cost electrodes. In this paper, we present a direct one-step route to synthetize a functional nitrogen-doped graphene film onto a Ni-covered silicon electro…

Graphene research and applicationsSupercapacitor Materials and FabricationElectrochemical sensors and biosensors

Investigation of design parameters in generating antifouling and lubricating surfaces using hydrophilic polymer brushes

Bidhari Pidhatika、Prathima C. Nalam2019-02-23Journal of Applied Polymer Science

ABSTRACT Long‐term stability of hydrophilic surface coatings that prevent fouling, cell adhesion and present a lubricious interface for biomaterials has been widely investigated in recent years. As an alternative to the gold standard poly(ethylene glycol) (PEG), poly(2‐oxazoline)‐based coatings are promising due to th…

Knee injuries and reconstruction techniquesPolymer Surface Interaction StudiesMarine Biology and Environmental Chemistry

Chemistry and Technology of Alternate Fuels

James G. Speight2019-02-23WORLD SCIENTIFIC eBooks

"This compendium covers unconventional fuel sources, i.e., sources other than crude oil and natural gas with the aim of presenting these sources as future alternates to fossil fuels. The contents of this must-have volume are important aspects of the non-fossil fuel sources of availability of alternate sources of fuels…

Catalytic Processes in Materials Science

Application of the Acoustic Emission Method in the Assessment of the Technical Condition of Steel Structures

Anna Adamczak-Bugno、Grzegorz Świt、Aleksandra Krampikowska2019-02-23IOP Conference Series Materials Science and Engineering

In accordance with applicable international regulations, construction products and elements should have appropriate physical and strength features to meet the required limit states of load-bearing capacity and serviceability in the construction objects designed by them throughout their entire lifetime. The non-destruc…

Ultrasonics and Acoustic Wave PropagationEngineering Diagnostics and ReliabilityMaterial Properties and Failure Mechanisms

Micro‐phase separation kinetics of polyurethane nanocomposites with neural network

Iman Sahebi Jouibari、Vahid Haddadi‐Asl、Hanie Ahmadi 等 4 位作者2019-02-23Polymer Composites

Thermoplastic polyurethane elastomers (TPUs) reinforced with multi wall carbon nanotubes (MWCNTs) and Closite30B, were prepared via melt mixing approach and investigated by spectroscopy, and rheological analyses. Following basic analyses, time sweep tests were used to determine the influence of temperature, applied pr…

Polymer Nanocomposites and PropertiesPolymer composites and self-healingEpoxy Resin Curing Processes

Coloring in the ZrBeSi-type structure

Samir F. Matar、Rainer Pöttgen2019-02-23Zeitschrift für Naturforschung B

Abstract The ZrBeSi type is a superstructure variant of the aristotype AlB 2 with an ordering of the beryllium and silicon atoms on the boron network. Every other layer of Be 3 Si 3 hexagons is rotated by 60°, leading to an ABAB stacking sequence and a sandwich-like coordination of zirconium by two Be 3 Si 3 hexagons.…

Intermetallics and Advanced Alloy PropertiesIron-based superconductors researchInorganic Chemistry and Materials

Development of innovative materials and thermal treatments for DEMO water cooled blanket

L. Pilloni、Carlo Cristalli、O. Tassa 等 6 位作者2019-02-23Nuclear Materials and Energy

One of the options currently taken into account for the realization of the first DEMO reactor is the “water-cooled lanket”. This option implies an irradiation temperature for the blanket material in the range of 280–350 °C. Therefore, in light of the under irradiation behaviour of EUROFER, namely of the DBTT shift tow…

Microstructure and Mechanical Properties of SteelsFusion materials and technologiesNuclear Materials and Properties

Modifications of Epoxy Resins and their Influence on their Viscosity

Andrzej Szewczak、Maciej Szeląg2019-02-23IOP Conference Series Materials Science and Engineering

The material engineering of composites is currently one of the fastest growing fields of the technology. Research in this discipline currently focuses on two basic directions: a search for completely new materials and methods of modifying the properties of already known materials. Among the study belonging to the seco…

Epoxy Resin Curing ProcessesMaterial Properties and ApplicationsPolymer Science and Applications

A fluorescence turn-on biosensor based on gold nanoclusters and aptamer for alpha fetoprotein detection

Chunting Lu、Dachuan Wei、Guiyin Li2019-02-23IOP Conference Series Earth and Environmental Science

Alpha-fetoprotein (AFP), an important tumor marker, is widely used for the diagnosis of patients with germ cell tumors and hepatocellular carcinoma. Herein, a highly sensitive aptasensor for AFP detection was constructed based on fluorescence resonance energy transfer (FRET) between 5-carboxyfluorescein (FAM) and gold…

Advanced biosensing and bioanalysis techniquesNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis