نتایج جستجو برای: nano structured materials

تعداد نتایج: 602431  

2015
Z. Li G. L. Zhao P. Zhang S. Guo Jinke Tang J. Tang

In this work, micro/nano-structured Bi0.5Sb1.5Te3 bulk thermoelectric materials were synthesized by mechanical alloying from elemental shots of Bi, Sb, and Te. Cold pressing and subsequent heat treatments with hydrogen reduction were used to form bulk solid samples with good thermoelectric properties in the temperature range around 75 ̊C to 100 ̊C. In comparison to crystal growth methods and chem...

Increasing material’s strength is of particular importance. Improving material’s mechanical properties such as strength could reduce the size and weight of the structure. The size and weight of the structure are among the effective parameters in design. Since the past a variety of methods have been developed to increase the strength of metals that are capable of increasing metals’ strength to a...

2008
Tünde Vig Slenters Irmgard Hauser-Gerspach Alma U. Daniels Katharina M. Fromm

Silver coordination polymer chains were deposited on Au(111) as a model surface, as well as on gold alloy and titanium as dental implant and restorative materials. The topography of the surface was analysed on the model substrate and it was found to be a nano-structured crystalline material. In vitro investigations in a flow chamber imitating the oral environment prove the anti-bacterial proper...

Journal: :Interface focus 2012
Marianne Impéror-Clerc

Three-dimensional periodic complex structures are encountered in various soft matter systems such as liquid crystals, block-copolymer phases and the related nano-structured materials. Here, we review several well-defined topologies: two-dimensional hexagonal phase, three-dimensional packing of spheres, tetrahedral close packing (tcp) bi-continuous and tri-continuous cubic phases. We illustrate ...

2012
Marc Heyns

The development of fundamental understanding in material science starts at the atomic level, where concerted movements set the properties of a material and its reaction upon the application of external factors. With the current development of nano-structured materials as e.g. metal-organic frameworks which can be used for energy storage applications, gaining insights into the dynamics that driv...

Journal: :Independent Journal of Management & Production 2020

Journal: :Molecules 2010
Yinghuai Zhu Xiao Siwei John A Maguire Narayan S Hosmane

This review covers the application of cycloaddition reactions in forming the boron-containing compounds such as symmetric star-shaped boron-enriched dendritic molecules, nano-structured boron materials and aromatic boronic esters. The resulting boron compounds are potentially important reagents for both materials science and medical applications such as in boron neutron capture therapy (BNCT) i...

2012
BONG-GUEN HONG

Thermal plasmas, normally generated by DC (direct current) arc or inductively coupled RF (Radio Frequency) discharge, can be described as a high enthalpy flame with extremely high temperature fields (1,000~20,000 K) and a wide range of velocity fields from several m/s [1-5] to supersonic values [6-7]. Since the resultant huge enthalpy can be realized for various kinds of plasma forming gases an...

Journal: :Analytical and bioanalytical chemistry 2007
D Eichert L Gregoratti B Kaulich A Marcello P Melpignano L Quaroni M Kiskinova

Recent developments of element-specific microscopy techniques using synchrotron radiation are opening new opportunities for the analytical investigation of various heterogeneous materials. This article provides a general description of the operational principles of different microscopes allowing chemical and structural imaging combined with micro-spot spectroscopic analysis. Several selected ex...

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