Is there a good way to grind a material into a fine powder by hand?

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Is there a good way to cut electrospun fibers into a constant shape?

We are doing testing on electrospun fibers and so far for samples we have just been hand cutting strips out. Obviously by hand each strip has more variability then we now need as we are now...

01 February 2019 8,922 3 View

How to Interpret Rietveld Occupancy Values?

I have been doing some Rietveld calculations and been looking for an answer on some of the occupancy numbers. It there is one location for an element in the structure I understand the results but...

09 October 2016 8,780 7 View

Are there any common methods people use for growing larger crystals to make particles from nanomaterials larger?

Currently been working with nano plate type structures and having issues with surface effects so we want to move away from this and try to make larger crystals to try and avoid some of the issues...

08 September 2016 8,398 10 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 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

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

Piotr Gębara

Sometimes, we use liquid nitro, because fragility of materials increases with temperaturę decrease. However, I am not sure, what will happen in your case.

Tim Ritter

Actually...best way I found was to use the "crack cocaine" method. Put the powder on a glass slide and just keep going over it with a straight razor blade until the powder is all nice and fine.