Magneto-electric nano-antennas
We explore how the magnetic contribution that may arise in nano-structures can help in the design of highly radiative or/and directive nano-antennas.
Materials Literature
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The Dynamical Property and Abrasion Performance of Polyester Polyurethane/SiO2 Nanocomposite
Polyester based polyurethane/ SiO2 nanocomposites having the starting nNCO/nOH=2:1 and different concentrations of SiO2 nanoparticles (0, 0.2, 0.5, 1.0 and 2.0 wt %) have been prepared. The morphology, dynamical property and abrasion performance were analyzed using scanning electron microscopy, DMA and DIN abrasion te…
Synthesis, Characterization and Optical Properties of Single-Crystalline ZnO Nanorods by Thermal Evaporation
In this study, zinc oxide (ZnO) nanorods were fabricated on Zn-coated Si(100) substrates by two steps: pulsed laser deposition (PLD) and catalyst-free thermal evaporation process. First, the Zn films were pre-deposited on Si(100) substrates by PLD. Then the ZnO nanorods grew on Zn-coated Si(100) substrate by the simpl…
Study on Friction Characteristic of Sintered Friction Component for Synchronizer-Ring of Diesel Vehicle
엔진의 출력증대와 이에 따른 변속기의 크기 증가 등으로 인한 회전체의 관성증가로 변속기의 변속성능은 악조건이 되고 있다. 따라서, 이를 해결하기 위하여 내마모성이 높은 마찰소재의 개발이 요구된다. 디젤차량 수동변속기용 싱크로나이저 링에 요구되는 마찰특성에 적합한 소재를 개발하고, 이에 대한 접합 특성을 평가하였다. 즉, 철합금 모재와 동합금계 마찰재를 접합하는 공정을 개발하고, 접합층에 대하여 BSE분석, EDX분석을 수행하여 접합특성을 평가하였으며, 해당 시험편에 대하여 전단강도를 평가하였다.
Nanorods of Cobalt Oxide: Study on its Morphology with Varied Sonication Time
Nanomaterials research has become a major attraction in the field of advanced materials research in the area of Physics, Chemistry, and Materials Science. Biocompatible and chemically stable magnetic metal oxide nanoparticles have biomedical applications that includes drug delivery, cell and DNA separation, gene cloni…
Morphology and Residual Stress of Ultrathin Al Films Confined by AlN Layers
Ultrathin Al films have been prepared in modulated Al/AlN multilayer structures by DC magnetron sputtering. The surface morphology was observed by scanning probe microscopy (SPM). SPM images show that ultrathin Al films consist of equiaxial in-plane grains. The surface roughness for 20 nm-thick Al film which is more t…
Preparation, structure, and magnetic properties of CuMnFe2O4 nanoparticles for magnetic particle imaging
The crystal structure of the synthesized magnetic nanoparticles was analyzed with XRD and SEM. Effect of doping value on microstructure was analyzed by XRD. Results are shown in Figure 1. The average particles sizes of samples were obtained by nanosize measure of Zeta Sizer Nano-ZS instrument results at room temperatu…
Physical and biological optimization of core-shell nanoparticle tracers for in vivo MPI
In this study, in vivo particokinetics of biocompatible MNTs that show optimal MPI performance in the biological environment has been presented. In our previous work, the particokinetics - biodistribution and blood circulation time - of poly(ethylene glycol) (PEG)-coated 17 nm core and ~80nm hydrodynamic diameter MNTs…
Photoelectrochemical Behaviour of Copper Indium Selenide Thin Films
Copper Indium Selenide (CIS) thin films were pulse electrodeposited at room temperature and at different duty cycles in the range of 6 – 50 %. Deposition current density was kept constant at 5 ma cm-2 in the present work. The total deposition time was 60 min. The precursors used were AR grade 0.3 M of each CuCl2 and I…
Simulation of the stress-strain state and evaluation of the blade loading capacity in the case of impermeability testing of engine housings
A numerical methodology for determining the stress-strain state and the blade loading capacity is proposed to study the blade failure on the basis of stress redistribution in a given blade cross section due to an additional thermal loading and on the basis of the failure enforcement action on this cross section at a g…
Développement du soudage faisceau d’électrons de l’alliage d’aluminium 6061-T6 pour le réacteur Jules Horowitz
L’alliage d’aluminium 6061-T6 est retenu pour la fabrication du caisson coeur du réacteur expérimental Jules Horowitz (RJH). Le caisson RJH est un équipement nucléaire sous pression. L’utilisation de alliage à durcissement structural 6061-T6, sur des pièces d’épaisseurs supérieures à 20 mm, soudées bout à bout à plein…
Effect of Growth Atmosphere on the Structural, Optical and Magnetic Properties of Fe-Doped In2O3 Films
Room temperature ferromagnetism was observed in Fe-doped In2O3 films deposited on fused quartz substrates by radiofrequency magnetron sputtering in N2 and O2 atmosphere, respectively. Results show that with increasing the O2 and N2 flux, the lattice constant increases, the optical band gap decreases, and the ferromagn…
The Lattice Distortion-Induced Topological Insulating Material
We have carried out a series of calculations to investigate the electronic band structure of bulk HgTe strained along c-direction with the constant-volume by means of the full potential linearized augmented plane-wave method. Our results show that there is a topological insulating phase induced by the lattice distorti…
Interaction of tetrabutylammonium salt of the [B12H12]2− anion with the melt of benzene-1,2-dicarboxylic acid in an inert atmosphere
An original method for synthesis of a water-soluble derivative of the 1,2-[B 12 H 10 (OH) 2 ] 2− boron cluster anion using alkaline hydrolysis of the products of interaction of bis(tetrabutylammonium) dodecahydro- closo -dodecaborate (2-) with the melt of benzene-1,2-dicarboxylic acid in an inert atmosphere is develop…
Heat Transfer Process Computer Simulation and Microstructure Prediction During Crystallization of Metal Alloys
Abstract Processes of crystallization during casting formation from aluminum alloys, steel and cast iron have been studied using 3-D com- puter simulation. Temperature fields of castings have been obtained and the microstructure distribution of these castings has been predicted. A comparison between numerical results…
The Use of Orthosiphon Stamineus Anticancer Action Against Human Oral Squamous Cell Carcinoma
Background: Oral squamous cell carcinoma (OSCC) accounts about 90% of head and neck cancer. Orthosiphon stamineus is a medicinal herb grown in Southeast Asia and exhibit many pharmacological properties such as, anti-inflammatory, antioxidant, anti-bacterial, antiangiogenetic effects.
In silico analysis of the three-dimensional structures of the homodimer of uridine phosphorylase from Yersinia Pseudotuberculosis in the ligand-free state and in a complex with 5-fluorouracil
Pseudotuberculosis is an acute infectious disease characterized by a lesion of the gastrointestinal tract. A positive therapeutic effect can be achieved by selectively suppressing the activity of uridine phosphorylase from the causative agent of the disease Yersinia pseudotuberculosis . The synergistic effect of a com…
Microstructure Evolution in Undercooled Ni-Si Melt
Upon non-equilibrium solidification, the intrinsic parameters, such as moving velocity, temperature, solute partition coefficient, and liquid and solid concentrations at the interface, deviate from their equilibrium characteristics, and the morphology of the as-solidified structure and the grain size are influenced by…
Experimental Study on the Fluorene Removal From Fluorene-Acenaphthene-Dibenzofuran Mixtures of Wash Oil
The azeotrope mixtures in wash oil usually could not use conventional distillation to separate. The objective of this work is to separate and obtain fluorenone from fluorene-acenaphthene-dibenzofuran mixtures which were extracted from wash oil via chemical transformation and azeotropic distillation. We prepared fluore…
Synthesis and Crystallographic Study of Co Doped ZnO Nano-Sized Powders by Co-Precipitation Method
Co doped ZnO samples having composition Zn1-xCoxO (x= 0.00, 0.10 and 0.20) were synthesized by co-precipitation method. X- ray diffraction analysis reveals that the Co doped ZnO nanopowders crystallize in wurtzite structure without any impurity phases. The lattice constants of ZnO nanoparticles decrease slightly with…