What is the reason for asymmetric XRD peaks of thin films?

Hello all, I got asymmetric peaks in the XRD of the InGaN thin films that were grown on the sapphire substrate and I am trying to understand the reason for this behavior. Could anyone help me...

10 November 2019 6,825 4 View

How to calculate exact defect density in GaN thin films ?

Hi all, I am working on GaN-based device fabrication. I am growing the GaN thin films under different growth conditions using molecular beam epitaxy. I am interested in calculating the defect...

10 November 2017 3,560 9 View

Any powerten DC power supply technicians ??

We have couple of DC power supplies from POWERTEN Inc. (model 6016) for repair. We are looking for some specialists to repair them. Please kindly let me know. Thanks in Advance,

09 October 2016 9,672 0 View

Reasons for the high carrier concentration and low mobility in III-N films??

Hi, I am working on the growth and characterization of III-Nitride thin films and nanostructures. our concentration is to grow high quality pure and rare earth (Er, Yb, Eu) doped GaN and InGaN...

03 April 2016 6,112 2 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

Does anyone know to clarify these changes?

01 March 2021 1,290 2 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View