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Questions related from Ahmed Saeed Hassanien
I want to calculate internal residual stresses due to the annealing process, so Young modulus must be known. Therefore, it should be calculated. What are the equations that can be used to...
03 March 2017 3,881 16 View
Is there any free software available to calculate the optical constants using the optical measurements of the reflectance and transmittance together? or by using the optical absorbance alone?I had...
18 December 2016 6,755 6 View
Please, Can any one inform me if XRD can detect the different types of the crystalline imperfections ? What are the used software programs? are there free programs can determine these defects? If...
02 May 2016 4,989 3 View
اPlease, How can I differentiate between the different amorphous phases of the iron (III) oxides? what is the simplest and suitable way that can differentiate between: Alpha-Fe2O3 , Beta-Fe2O3 ...
22 February 2016 6,895 7 View
Please, Can anyone provide me an article study the correlation between the band gap energy and the electronic polarizability in semiconducting chalcogenide materials?
14 February 2016 7,183 5 View
Vegard predicted to calculate theoretically the optical energy gap of crystalline systems for the III-V systems. Does this law valid to calculate the optical energy gap of glassy chalcogenides...
27 August 2015 3,061 3 View
What are the most appropriate way for measuring this time? What are the limits of its value?
06 April 2015 2,013 2 View
What are the more accurate methods to calculate crystallite size, types of dislocations and microstrain of nanostructure materials?
10 March 2015 1,293 2 View
The resistivity of an alloy should be between those of its components, or at least similar to them. But practically, it was found that, it was much higher than that of either component.
02 March 2015 802 9 View
the resistance of an disordered alloy is found so high and larger than the crystalline alloy of the same composition. What is the interpretation of this behaviour?
02 March 2015 7,098 7 View
What is the skin effect and what is it meaning for semiconducting materials?
31 January 2015 1,972 8 View
Please, can anyone explain the physical meaning of existing three electron transitions?
13 January 2015 1,368 2 View
Does anyone have an accurate theoretical method to calculate the elastic module for any chalcogenide alloy?
05 January 2015 5,182 2 View
From this relation could you determine the refractive index (n) T = 4n / (n+1)2
19 December 2014 1,360 4 View
