How to separate polymer stabilized Cu nanoparticles without centrifugation?

05 June 2017 2,856 3 View

Can anyone help me in providing physical properties of the sample required for DLS Measurement?

I want to measure the DLS size of my sample, which is aqueous colloid of copper particles having size less than 100 nm. During DLS measurement in Malvern Nano ZS90 instruments it is asking for...

08 September 2016 9,154 7 View

How to find the copper content in copper nanopowder?

I have a given sample of copper nanopowder. It contains a residue amount of polymer and all. So how to determine the copper content in the powder? Any method or instrument or procedure?

31 December 2015 1,286 8 View

Determination of weight percentage of copper(I) oxide and copper(II) oxide from XRD data?

I have a powder contains of two oxides of copper (I & II). I have done XRD of that sample and found intense peak of both cuprous and cupric oxides. I need to determine the weight percentage of...

31 December 2015 1,959 3 View

How do I calculate volume fraction of nanoparticle in nanofluid if it's prepared by one step method?

Nanofluid is prepared by one step chemical reduction method.

05 June 2015 3,687 13 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 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

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Can thermal cycler machines be problematic during PCR?

Hi, my question is about the heating of thermal cycler machines and I hope some of you had experienced a similar thing previously. There are two thermal cycler machines in the lab(BioRad) and for...

26 February 2021 4,777 4 View