Walker diffusion method for calculation of transport properties of finite composite systems

2002 ◽  
Vol 65 (2) ◽  
Author(s):  
Clinton DeW. Van Siclen
Keyword(s):  
Transport Properties ◽  
Diffusion Method ◽  
Composite Systems

scholarly journals Magneto-optical imaging and transport properties of FeSe superconducting tapes prepared by the diffusion method

2011 ◽  
Vol 25 (2) ◽  
pp. 025003 ◽  
Author(s):  
Qing-Ping Ding ◽  
Shyam Mohan ◽  
Yuji Tsuchiya ◽  
Toshihiro Taen ◽  
Yasuyuki Nakajima ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Transport Properties ◽  
Diffusion Method ◽  
Superconducting Tapes

scholarly journals Impact of Water-Repellent Products on the Moisture Transport Properties and Mould Susceptibility of External Thermal Insulation Composite Systems

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 554
Author(s):  
Renata Roncon ◽  
Giovanni Borsoi ◽  
João L. Parracha ◽  
Inês Flores-Colen ◽  
Rosário Veiga ◽  
...  
Keyword(s):  
Water Vapor ◽  
Water Absorption ◽  
Transport Properties ◽  
Thermal Insulation ◽  
Moisture Transport ◽  
Laboratory Tests ◽  
Water Vapor Permeability ◽  
Water Repellent ◽  
Vapor Permeability ◽  
Composite Systems

External Thermal Insulation Composite Systems (ETICS) are constructive solutions widely used to increase the thermal insulation in new and retrofitted buildings. However, these systems can present several anomalies due to their constant exposure to weathering agents and anthropic factors. Water is generally the major cause of degradation. Thus, the application of water-repellent products can minimize the appearance of anomalies and increase the durability of the systems. In this paper, acrylic-based and siloxane-based hydrophobic products were applied to ETICS, with the aim of assessing the compatibility, effectiveness, and durability of these products. The moisture transport properties and mould susceptibility were assessed through laboratory tests on untreated and treated specimens. The durability of the hydrophobic treatments was also evaluated through artificial aging tests (heat-cold and freeze-thaw cycles). Results show that the protection products generally decreased water absorption, slightly decreased the drying rate, and presented adequate water vapor permeability. After aging, the products still had reasonable effectiveness and, with one exception, improved the water vapor diffusion of the systems. Additionally, ETICS underwent an alteration in the finishing coat (possible modification of the porosity) due to the aging cycles. No clear linear correlation was found between the contact angle values and water absorption results, evidencing the influence of other factors related to the composition of the water-repellent products.

Comment on “Walker diffusion method for calculation of transport properties of composite materials”

2000 ◽  
Vol 61 (4) ◽  
pp. 4659-4660 ◽  
Author(s):  
In Chan Kim ◽  
Dinko Cule ◽  
Salvatore Torquato
Keyword(s):  
Composite Materials ◽  
Transport Properties ◽  
Diffusion Method

Spectroscopic Diagnostics of Tokamaks

1988 ◽  
Vol 102 ◽  
pp. 165-174
Author(s):  
C. de Michelis
Keyword(s):  
Transport Properties ◽  
Power Losses ◽  
Spectroscopic Diagnostics ◽  
Important Concern

AbstractImpurities being an important concern in tokamaks, spectroscopy plays a key role in their understanding. Techniques for the evaluation of concentrations, power losses and transport properties are surveyed, and a few developments are outlined.

Structure and Orientation of As Precipitates in LT-MBE Grown GaAs

1991 ◽  
Vol 49 ◽  
pp. 900-901 ◽  
Author(s):  
Alain Claverie ◽  
Zuzanna Liliental-Weber
Keyword(s):  
Transport Properties ◽  
Layer Thickness ◽  
Growth Temperature ◽  
Low Temperatures ◽  
Lattice Parameter ◽  
Crystalline Quality ◽  
Insulating Properties ◽  
Lt Gaas

GaAs layers grown by MBE at low temperatures (in the 200°C range, LT-GaAs) have been reported to have very interesting electronic and transport properties. Previous studies have shown that, before annealing, the crystalline quality of the layers is related to the growth temperature. Lowering the temperature or increasing the layer thickness generally results in some columnar polycrystalline growth. For the best “temperature-thickness” combinations, the layers may be very As rich (up to 1.25%) resulting in an up to 0.15% increase of the lattice parameter, consistent with the excess As. Only after annealing are the technologically important semi-insulating properties of these layers observed. When annealed in As atmosphere at about 600°C a decrease of the lattice parameter to the substrate value is observed. TEM studies show formation of precipitates which are supposed to be As related since the average As concentration remains almost unchanged upon annealing.

Modification of structural and transport properties in epitaxial YBa2CU3Ox films by pulsed laser irradiation

1993 ◽  
Vol 3 (12) ◽  
pp. 2173-2188
Author(s):  
N. G. Chechenin ◽  
A. V. Chernysh ◽  
V. V. Korneev ◽  
E. V. Monakhov ◽  
B. V. Seleznev
Keyword(s):  
Transport Properties ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Pulsed Laser Irradiation
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