What does negative slope in Eg calculation graph means?

that's the graph between (alphaE)2 and E

11 December 2015 9,356 9 View

Can anyone help in understanding the zinc nitride crystal structure using XRD?

its crystal structure is complicated I cnt understand it any help will be admired regards

11 December 2015 9,308 5 View

Is scattering coefficient of any thin film wavelength dependant?

does 's' depend upon lambda (of light)???

11 December 2015 5,181 3 View

Can we calculate scattering coefficient of thin films from ellipsometry data and how?

zinc nitride thin films are synthesized but analysis of reflectance's data requires scattering coefficient's value too

11 December 2015 5,968 3 View

Can magnesium granular powder be ball milled to fine powder?

to make 2" pellet of fine ground magnesium, what time and balls must be used?

31 December 2014 949 7 View

Is anyone familiar with making 2" diameter pellets of Zinc and Magnesium using a hydraulic press?

Information needed: -Calcination temperature for Zinc powder -Time for calcination -Time and pressure required for making 2" diameter pellets -Annealing time and temperatures for the pellets...

04 May 2014 5,516 2 View

Which polymer substrates are to be used for depositing thin film of ZnMgN?

Name the materials and their maximum operating temperatures please.

10 November 2013 5,689 2 View

Is it possible to make MgZnO by oxidation of MgZnN?

I have heard that bonding is not easy in that case.

08 September 2013 1,310 1 View

Can anyone tell me how to understand a raman and FTIR spectra?

I mean, how and what should I do to understand using attained peaks and dips

08 September 2013 7,897 10 View

Can someone recommend the latest research papers related to doping of ZnO thin film to make it p or n-type?

Seeking research papers

06 July 2013 3,734 11 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View