Is there a simple method to create very narrow but very bright light beam?

One of my microscopy application I would need a very narrow (0.5mm - 0.1mm) light beam (not laser!) to illuminate biological specimen. (cells) Is there any method to create such light beam? As an...

05 January 2021 5,352 4 View

Is it possible, that nitrogen purging gas reacts with solute Sr during the rotary degassing treatment of liquid aluminum alloys?

During our experiments, we conducted multiple rotary degassing treatments with Ar and N2 purging gases on a 356 alloy with 200 ppm Sr. We found that the fading process of the added modifier is...

25 September 2020 5,341 3 View

Protocol for stable BaTiO3 nanoparticle suspension preparation?

I have BaTiO3 nanoparticle (particle size

19 November 2018 3,324 1 View

Could someone suggest a recent textbook on zootaxonomy & animal evolution & phylogeny for teaching purposes which covers ca. the whole Animal kingdom?

I'd prefer a book using results based on both molecular and classical methods. If there's no such book covering the whole animal phylogeny, then I'd also welcome a book on "Chordata" or "Vertebrata".

25 January 2015 1,309 8 View

Which free software for DNS64 implementations exists?

Due to the depletion of the global IPv4 address pool, some new Internet clients will not be able to get IPv4 adresses, but only IPv6 addresses. However the majority of the internet still uses IPv4...

19 December 2013 4,070 3 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Which is the most efficient etching solution for nickel based alloys?

Which solution reveals the microstructure and features of nickel-based alloys?

02 March 2021 2,221 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 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

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 identify what type of fillers are in a polymer?

Hello everyone, I have some PHAs blended with fillers and nucleating agents, yet I don't know what kind of fillers or nucleating agents. The producer has shut down and there's no way to get in...

24 February 2021 1,356 8 View

How to prepare a thin polymer film by post-polymerization/crosslinking?

24 February 2021 2,362 5 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View