Material Characterization

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Questions related to Material Characterization

What is the thermal stability of a sapphire substrate?

I want to deposit an Al₂O₃ thin film on an optically transparent sapphire substrate with a thickness of less than 1 mm. What is the maximum temperature it can withstand during post-deposition...

11 May 2025 9,417 0 View

Tetraquarks and the 2,2 highest weight representation of SU(3)?

Tetraquarks are 4 particle quark states since 3^4 = 3×3×3×3 = 81. In trying to organize the 6 known quarks, charm, truth, beauty, up, down, and strange in the weight diagram of SU(3), does the...

20 December 2024 1,380 5 View

Optimal annealing temperature to attain crystallinity of SnO2?

Hi, am a research scholar working on thin films basically SnO2 thin films. I have a issue regarding the crystallinity of this thin film. Initially when the samples were deposited at 350 degree...

09 December 2024 4,061 2 View

Can anyone provide a SILVACO TCAD simulation code(in DeckBuild environment) for p-GaN HEMT?

I getting a convergence problem while simulating p-GaN/AlGaN/GaN multiple quantum well solar cell. How can I solve it?How to set the gate work function value?please help me!!!

15 November 2024 622 1 View

Why is there no surface traps in the examples of victory TCAD of silvaco in GaN HEMT's simulation for normally on?

I am confused as without the surface traps how is there the 2DEG formed and hence the idvg of AlGaN/GaN HEMT simulation?

30 August 2024 7,625 0 View

Why resistance is inversely proportional to relaxation time & relationship between conductivity mobility & carrier concentration of a semiconductor?

Why resistance is inversely proportional to relaxation time and relationship between conductivity mobility and carrier concentration of a semiconductor?

26 February 2024 2,440 2 View

How can I calculate chemical formula from EA,EIA,TGA?

Hi I often see papers determining chemical composition by ICP-AES calibration of K and Fe ions, elemental analyses of C and N element and TG determination of H2O molecules. In this example paper,...

07 August 2022 2,727 0 View

What is me.tunnel parameter in model statement and how to calculate it ?

I was trying to model a tunnel fet in silvaco tcad. For this I went through the silvaco example of tunnel fet. There I found a term me.tunnel in the material statement. I don't understand the term...

30 July 2022 5,269 0 View

How ll we know that the doping element (Al) strongly prefer to the octahedral site or tetrahedral site?

If we have doped non-magnetic element(i.e Al) with the empirical formula of spinel (AFe2-xMO4) ferrite on the iron side then how ll we know that the doping element (Al) strongly prefer to the...

15 January 2022 5,597 3 View

How can I plot tunneling probality vs energy curve by using Atlas Silvaco ?

I need to plot Tunneling probability vs energy plot in Altas Silvaco . Anyone can explain me how can I do that ? Please step by step process.

06 July 2021 942 0 View

How to plot Tunneling probability vs energy curve in Altals Silvaco?

I am working on Cylindrical GAA finfet ànd need to plot the tunneling probability vs energy curve . Anyone can help me to know how can I get this curve.

25 June 2021 1,266 0 View

How to do blank subtract on Agilent ICP-OES ?

Hello there, Does anyone have experience on how to do blank subtract on Agilent ICP-OES 5110? Recently I experience Ca contamination, i tried eveything and nothing works, and also seems like...

12 May 2021 4,647 1 View

How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

10 February 2021 891 2 View

Is it possible to find out the wettability and contact angle of water on the rough or corrugated substrate?

First of all, whether it is possible to identify the presence of water and its amount on the Silicon substrate by using only FT-IR spectroscopy. Can ATR-FTIR spectroscopy find out the wettability...

04 February 2021 9,553 4 View

In your view, which current SEM is most recommended for EBSD/TKD and EDS analysis?

I know that this is a very difficult question, as the areas of application can vary greatly. However, if you want to operate low as well as high resolution (from a few millimeters to nanometers),...

03 February 2021 5,351 4 View

Why does the fatigue cracks initiate from surface to interior as the stress level decreases?

It is well known that low-cycle and high-cycle fatigue cracks initiate from the surface, while ultra-high cycle fatigue cracks initiate from the inside. I am very curious why this transformation...

18 January 2021 10,038 6 View

Does the adsorbed water or gases affect the CHNS analysis of high surface area porous carbon ?

Adsorbed water and gases can affect the weight of the porous carbon. Some times 6-7% weight loss can occur during the degassing of the sample. Will this weight loss affect the calculation of C,...

09 November 2020 5,704 3 View

It's the same material. What makes the -NH2 peak different?

Hello everyone! I have a question about H-NMR, especially -NH2 peak. First, the material is (R)-Morpholin-3-ylmethanol hydrochloride (CAS 1212377-10-0). I analyzed H-NMR for several lots...

03 November 2020 8,788 13 View

How can control arc gap and arc location in Vacuum Arc Remelting (VAR) process?

because of Designing of VAR furnace, operator have problem to detected arc position and arc gap during the melting process. in some cases using of special video camera is mentioned but there is no...

03 October 2020 8,591 1 View

Can any one suggest me the dielectric constant of Gold and Co3O4 at room temperature ?

i have a question regarding dielectric constant of gold,cobalt oxide (co3O4) and n-tpe silicon . i find only one publication on this issue showing dielectric function cobalt oxide(CoO) 12.9 and...

03 October 2020 9,544 4 View

How to model deformable metal powder?? How to define gap between the particles?? Which modeling software can be used??

We need to model deformable metal powder. It will be further used in simulation process.

01 October 2020 9,713 7 View

How to analyse the data of XPS material characterization test?

I need suggestions on how to analyze the obtained data of the XPS test, as I am working on the adsorptive removal of As(V) versus As(III) from the aqueous media.

19 September 2020 9,195 7 View

How to measure recovery rate from heavy metals in soil by ICP-MS?

Dear Professors and Experts, I was doing an experiment to measure the recovery rate. I want to spike 1 ppb after the dilution of soil in 10000 times, so I was spiking 1 mL of 10 ppm heavy metals...

12 September 2020 6,254 4 View

How to calculate Abaqus software compatible material properties from the data described below?

From testing data: yield stress, ultimate stress, total strain, ratio of strain at elastic limit by strain at strain hardening and the ratio of elastic yield modulus to the strain hardening...

07 September 2020 5,623 10 View

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