Tolerance in superstructures formed from high-quality colloidal ZnO nanoparticles with hexagonal cross-section

CrystEngComm ◽  
2019 ◽  
Vol 21 (34) ◽  
pp. 5137-5144 ◽  
Author(s):  
Sebastian Theiss ◽  
Michael Voggel ◽  
Moritz Schlötter ◽  
Sebastian Sutter ◽  
Martin Thomas Stöckl ◽  
...  
Keyword(s):  
Cross Section ◽  
Zno Nanoparticles ◽  
Glassy State ◽  
High Quality ◽  
Continuous Transition ◽  
Periodic Arrays ◽  
Hexagonal Cross Section

The order of periodic arrays of hexagonal ZnO nanoplates has been investigated in terms of polydispersity. A continuous transition from a crystalline to a glassy state has been found.

A new type of 3D [(MII)2(TCNQ−II)3]2−coordination network with spacious channels of hexagonal cross-section generated from TCNQH2

CrystEngComm ◽  
2012 ◽  
Vol 14 (2) ◽  
pp. 351-354 ◽  
Author(s):  
Brendan F. Abrahams ◽  
Robert W. Elliott ◽  
Timothy A. Hudson ◽  
Richard Robson
Keyword(s):  
Cross Section ◽  
Coordination Network ◽  
Hexagonal Cross Section ◽  
New Type

Numerical and Experimental Modelling of an Air Flow Field in the Chamber of a Rectangular Cross-Section Contraction

2015 ◽  
Vol 769 ◽  
pp. 161-165
Author(s):  
Vladimira Michalcova ◽  
Sergej Kuznetsov ◽  
Lenka Lausova ◽  
Iveta Skotnicova
Keyword(s):  
Cross Section ◽  
Rectangular Cross Section ◽  
Optimal Shape ◽  
High Quality ◽  
Ansys Fluent ◽  
Experimental Modelling ◽  
Software Models ◽  
Turbulent Characteristics ◽  
Fluent Software ◽  
Enclosed Chamber

The article describes the study of turbulent characteristics in the enclosed chamber of a rectangular corss-section nozzle using numerical calculations. Suitable Ansys Fluent software models were selected based on the measurements results comparison in an aerodynamic tunnel as the fluid exits the nozzle. Special attention is paid to profile velocity near the peripheral wall of the observed enclosed chamber in order to confirm the optimal shape of the contraction and thus take steps towards a high quality velocity field.

Comparison of Microstructure and Mechanical Properties of Semi-Solid Castings Produced Using Billets Made by EMS and SEED

2014 ◽  
Vol 217-218 ◽  
pp. 332-339 ◽  
Author(s):  
Xiao Kang Liang ◽  
Da Quan Li ◽  
Pascal Côté ◽  
Stephen P. Midson ◽  
Qiang Zhu
Keyword(s):  
Mechanical Properties ◽  
Cross Section ◽  
Dendritic Structure ◽  
Casting Process ◽  
Grain Structure ◽  
High Quality ◽  
Microstructure And Mechanical Properties ◽  
Grain Structures ◽  
Heat Treated ◽  
Semi Solid

The spheroidal grains in billets used for semi-solid casting are generally manufactured by electromagnetic stirring (EMS) during the casting process. This method however, is not economically applicable for small quantities of the thixo billets. Swirled Enthalpy Equilibration Device (SEED) has been developed as a rheocasting process, and the SEED process is of interest for developing new thixo alloys, as well as for optimizing the thixocasting processes for high quality components. The objective of this paper is to compare the microstructure and mechanical properties of aluminum alloy 319s billets and castings produced using EMS and SEED feed materials. The experimental results show that for as-cast billets made from SEED process, a well-developed spheroidal grain structure is distributed throughout the cross-section of the billet, while for as-cast EMS billets, the grain structure is inhomogeneous, i.e., a dendritic structure was present adjacent to the surface of the billet, while a uniform, spheroidal structure was present at the centre. After the thixocasting process, however, the both SEED and EMS billets have well-developed, spheroidal grain structures. Mechanical properties of thixocast and T61 heat treated components are comparable for the both SEED and EMS billets.

Efficient coverage of ZnO nanoparticles on cotton fibres for antibacterial finishing using a rapid and low cost in situ synthesis

2018 ◽  
Vol 42 (2) ◽  
pp. 1052-1060 ◽  
Author(s):  
Raquel Borda d’ Água ◽  
Rita Branquinho ◽  
Maria Paula Duarte ◽  
Elisabete Maurício ◽  
Ana Luísa Fernando ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Low Cost ◽  
In Situ Synthesis ◽  
High Quality ◽  
Cotton Fibres

Antibacterial fabric using a simple, reproducible and low cost technique to synthesize high-quality ZnONPs was prepared and characterized.

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