Is there any way to find out the charge carrier type from the solution?

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Is there any limited sheet resistance of the thin films for hall measurement?

I know its related to Volt-meter accuracy & B, but I don't know what is this relation.

08 September 2014 6,273 6 View

How can I reduce electrical resistance of a semiconductor (p-ZnO) thin film , that made by sol-gel method?

I try optimizing these parameters: annealing temprature / gas synthesis parameters(solvent,surfactant,dopant,,...) coating method(spin, spray) heating temp after every spin coating Thickness of...

07 August 2014 2,942 5 View

Which route is right for calculating 3% at (for example) Na doping?

Synthesis method: sol-gel, materials: zinc acetate :0.5 mol to reach 0.5 mol/lit solution ethanol 1 L.

04 May 2014 5,492 1 View

What is the best electron/hole concentration measurement method for semiconductors?

Is there any simple setup to understand that a semiconductor is p-type or n-type (except the hot-point probe method & hall effect)?

01 February 2014 9,073 29 View

What is the best solvent for dissolving zinc acetate to reach p-type ZnO nanostructure by sol-gel?

I want to use a lithium acetate az dopant and I tried to dissolve lithium acetate in ethanol, but the result was not good enough.

01 February 2014 3,968 4 View

What is the result of these reactions: (zinc acetate dihydrate+ethanol+triethanolamine)&(zinc acetate dihydrate+ethanol+triethylamine)?

I want to reach to ZnO nanostructure by sol-gel method.

01 February 2014 4,719 4 View

Geotechnical Engineering (Proceedings of the ICE) time review?

Hello everyone, I recently submitted an article to Geotechnical Engineering (Proceedings of the ICE), and the current status has been listed as "EiC Pre-assessment: Ready" for the past 20 days. I...

10 August 2024 6,493 1 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

¿Are oxygen vacancies in semiconductors capable to change the band gap?

Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...

30 July 2024 8,339 2 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

What should a Mechanical Engineering PhD scholar focus on during their PhD to enhance their chances of securing a postdoctoral position?

29 July 2024 7,714 4 View

May I know the exact Quartile of the journal- Advanced Engineering Materials (Wiley) for material science category?

In some data sources it has been grouped in Q1 and some shows it is Q2.

29 July 2024 4,227 2 View