How different sulphur precursors modify the pH of an alkaline solution during hydrothermal synthesis of chalcogenides?

I am using different sulphur precursors in an alkaline medium for chalcogenide synthesis and at the end of the reaction i got decants with different pH values. How these precursors change the pH...

31 December 2019 231 1 View

In dye degradation, if the absorption peaks of the dye and catalyst lie in two different regions of solar spectrum, how to decide light source?

Illumination source has mainly to create excitons in the catalyst, hence mainly depends on the region of its band gap energy (hv>= Eg). I want to confirm whether if the absorption regions of...

06 July 2018 7,224 2 View

Why high pressure corresponds to lower increase in energy in comparison to temperature?

09 October 2017 8,637 3 View

What are the possible ways to increase the crystallite size in nanomaterials?

I am fabricating solar cells from earth abundant materials using sol gel method. In order to increase the efficiency i need to improve the crystallite size as in accord with Rodriguez - Lazcano.

09 October 2017 10,003 1 View

How to find which unit cell of a given phase is present?

08 September 2017 3,408 5 View

Why we get different intensity peaks in XRD?

i want to know the exact cause why along certain prefferred directions the X Rays are highly diffracted.

08 September 2017 8,482 13 View

I want to know how to calculate the average crystallite size for multiple XRD peaks of a compound?

01 January 1970 9,605 11 View

Is there any relation between particle size, grain size and crystallite size?

actually i am getting particle size and crystallite sizes almost in equal ranges for thin films, is it possible? if so please mention.

01 January 1970 8,186 13 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

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Why am I getting 'Infinity' and 'NaN' in my mixed-mode energy release values?

Hi everyone, I am currently running a mixed-mode simulation of a DCB using a user-defined cohesive zone model (UEL), however, the results I am getting don't make sense. I used the same UEL for...

24 February 2021 4,157 1 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 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

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 View

How to improve the adhesion between germanium and silicon monoxide thin film layers using EBEAM evaporation?

I want to deposit multilayer coating of germanium and silicon monoxide on silicon wafer using ebeam evaporation?

21 February 2021 2,141 3 View

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

How do I calculate absorption coefficient of my thin film if I dont know the thickness? Or how can I calculate the thickness of my sample?

I have done Uv-vis characterisation of my thin film and have received absorbance and transmittance data. Now I want to calculate the absorption coefficient but I dont know the thickness of my...

21 February 2021 7,148 8 View