How does layered materials form?

Dear all, I want to understand how does the layered metal sulfides form. For ex. MoS2, WS2. They are known to have layered structure. Why there should be Van der Waals force of attraction after...

28 November 2017 5,979 2 View

PL quenching of materials could be seen through electrical measurements?

If there is quenching in the PL of a material due to the addition of another material, can that be observed in terms of change in current in the typical V-I characteristics (in two probe...

25 September 2017 2,035 3 View

Why is the ratio of elements not matching in EDAX Cu2SnS3?

28 February 2017 7,942 5 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

Lift off problem with Indium/Gold deposition?

Hi, I'm doing 5/40nm In/Au e-beam evaporation at rates 0.2A/s(for In),1A/s(Au) on lithographically(doubly coated 495k,950k PMMA e-beam resist) done Si substrate at base pressure 2e-6torr. I'm...

18 January 2021 7,550 4 View

What are the best solvents for clean-up after ultrasonication extraction of PAHs?

I have done Ultrasonication extraction of PAHs using hexane:acetone. What is/are the best solvents to use for silica clean-up before GC-MS analysis?

17 November 2020 8,483 3 View

Can reduced particle size increase solubility ?

I'm trying to make Nanostructured lipid carriers (NLC) using ultrasonicator method for cancer meds that are hydrophobic and insoluble in water. I'm heating solid and liquid lipid phase and then...

21 October 2020 9,081 5 View

What could be the maximum amplitude in a ultrasonication process ?

If I can limit the temperature build up during the ultrasonication process, can I increase the amplitude from 30 to 100 % and observe the changes in the prepared nanocomposite. Some people are of...

12 March 2020 2,503 3 View

Why is my GO/polymer ultra-thin film showing poor gas selectivity?

Hello, I am creating a GO/polymer scaffold using a 2/100 ratio in a THF suspension (the polymer is soluble). I would then spin coat it onto a porous support. The membranes show reasonable...

31 December 2019 8,918 4 View

What are successful protocols for isolating proteins from solution containing other organic compounds?

I am a member of undergraduate research anticipating to investigate the protein expression of fungal biofilm after teatment of shockwaves and amphotericin B. After growing biofilm and containing...

24 November 2019 1,708 6 View

Coating of Iron Nanoparticle with Chitosan?

I am working on iron nanoparticle which will be coated with chitosan. In order to reduce the size i wanted to do ultrasonication. Please suggest the optimum amplitude and maximum power required to...

10 November 2019 5,921 3 View

Should I do ultrasonication while doing electrophoretic deposition?

I was using GO nanofluid to do EPD on a steel mesh. The soution was separated after 4 mins, and almost no particle was deposited on the mesh after I did the EPD for 8 mins. Should I do the...

26 September 2019 7,667 1 View

My SnO2 as ETL layer in Perovskite solar cell is not reproducible?

Hi, I'm a new researcher in perovskite solar cells. Recently I'm working on the basic perovskite solar cell fabrication using SnO2 as ETL. My device is planar structure with CsFAMA recipe and...

07 August 2019 6,208 6 View