نتایج جستجو برای: core shell structure

تعداد نتایج: 1778493  

2010
Fei Yao Qinglin Wu

Coextruded recycled polyethylene and wood-flour composites with core–shell structure were manufactured using a pilot-scale coextrusion line. The influence of wood loadings and thickness of the shell layer and core quality on mechanical and water absorption properties of the composites were investigated. Core–shell structured profile can significantly improve flexural and impact strengths of com...

2014
Kwang Wook Park Chang Young Park Sooraj Ravindran Ja-Soon Jang Yong-Ryun Jo Bong-Joong Kim Yong Tak Lee

UNLABELLED We report the observation of room temperature photoluminescence (PL) emission from GaAs/GaInAs core-multiple-quantum-well (MQW) shell nanowires (NWs) surrounded by AlGaAs grown by molecular beam epitaxy (MBE) using a self-catalyzed technique. PL spectra of the sample show two PL peaks, originating from the GaAs core NWs and the GaInAs MQW shells. The PL peak from the shell structure ...

2005
V. R. Rajeev Kumar

Polymerization of benzylthiocyanate on silver nanoparticles produces organic shell covered nanoparticles with controllable thickness in a one-pot process. Gram scale quantities of core–shell materials have been synthesized by this method. The methodology involves the addition of the precursor into Ag–citrate solution and the shell nucleates over a period of three weeks with complete precipitati...

2016
HONGCHANG PANG PENG TIAN

Core-shell AlOOH-polyglycol (APG) was synthesized by refluxing polyglycol with AlOOH nanoparticles in toluene in the presence of p-toluene sulphonic acid. The effects of solvent amount on the core-shell structure have been investigated. The morphology and thermal stability of the products were characterized by means of transmission electron microscopy (TEM) and thermogravimetric analysis (TGA)....

2009
Madiha Khalid Natalie Wasio Thomas Chase Krisanu Bandyopadhyay

Two-dimensional assemblies of Au-Pt bimetallic nanoparticles are generated in situ on polyethyleneimmine (PEI) silane functionalized silicon and indium tin oxide (ITO) coated glass surfaces. Atomic force microscopy (AFM), UV-Visible spectroscopy, and electrochemical measurements reveal the formation of core-shell structure with Au as core and Pt as shell. The core-shell structure is further sup...

2017
J.-B. Seol S.-H. Na B. Gault J.-E. Kim J.-C. Han C.-G. Park D. Raabe

Manipulating structure, defects and composition of a material at the atomic scale for enhancing its physical or mechanical properties is referred to as nanostructuring. Here, by combining advanced microscopy techniques, we unveil how formation of highly regular nano-arrays of nanoparticles doubles the strength of an Fe-based alloy, doped with Ti, Mo, and V, from 500 MPa to 1 GPa, upon prolonged...

2016
Veluska Arias Jeremy Odent Jean-Marie Raquez Philippe Dubois Karin Odelius Ann-Christine Albertsson

Restrained properties of "green" degradable products drive the creation of materials with innovative structures and retained eco-attributes. Herein, we introduce the creation of impact modifiers in the form of core-shell (CS) particles toward the creation of "green" composite materials. Particles with CS structure constituted of PLA stereocomplex (PLASC) and a rubbery phase of poly(ε-caprolacto...

Journal: :The journal of physical chemistry. B 2009
M Nayeri M Zackrisson J Bergenholtz

The scattering intensity of polydisperse systems of core-shell and layered hard spheres is considered. The Percus-Yevick solution for the partial structure factors is cast in a form suitable for numerical and analytical treatment. Closed-form, analytical expressions are given for an effective hard-sphere model of the scattering intensity of particles with an internal layered structure and a siz...

2017
Arman Davtyan Thilo Krause Dominik Kriegner Ali Al-Hassan Danial Bahrami Seyed Mohammad Mostafavi Kashani Ryan B Lewis Hanno Küpers Abbes Tahraoui Lutz Geelhaar Michael Hanke Steven John Leake Otmar Loffeld Ullrich Pietsch

Coherent X-ray diffraction imaging at symmetric hhh Bragg reflections was used to resolve the structure of GaAs/In0.15Ga0.85As/GaAs core-shell-shell nanowires grown on a silicon (111) substrate. Diffraction amplitudes in the vicinity of GaAs 111 and GaAs 333 reflections were used to reconstruct the lost phase information. It is demonstrated that the structure of the core-shell-shell nanowire ca...

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