Lakshmi Prasanna V

9 Questions 7 Answers 0 Followers

Questions related from Lakshmi Prasanna V

How to make sure that the discoloration of dye in the presence of nanomaterials is due to adsorption or catalytic degradation ?

I observed discoloration of dye in the presence of nanomaterials in the dark. production of ROS in the dark was also observed. How we can prove the degradation is due to adsorption or catalytic...

11 November 2015 9,411 3 View

Can any one suggest me rietveld refinement workshop which will be held in India?

I want to learn rietveld refinement . Even though i tried online tools its quite difficult for me. So, please some one suggest me rietveld refinement workshop which will be held in India.

11 November 2014 4,258 0 View

Does anyone know of a technique to determine the position of dopant in metal oxide?

I synthesized Nitrogen doped ZnO . Edax showed the atomic % of N. but how to make sure that dopant in the lattice not on the surface of metal oxide .

03 March 2014 8,294 11 View

What can be the reason for a Zn to O atomic ratio of 1:2 in EDX which was synthesized by solution combustion?

I have synthesized ZnO through the solution combustion method and the EDX showed a Zn atomic % as 33.37 and O as 66.63 but the XRD showed only ZnO only. How can the presence of Zn to O ratio of...

03 March 2014 3,845 21 View

What are the reasons for lower intensity in room temperature PL compared to the low temperature PL?

The PL intensity of ZnO decreased in case of room temperature PLcompared to low temperature (6K). What are the reasons for it and what role does temperature play in characterization and which...

04 April 2013 8,942 19 View

How do I calculate error bars for band gap calculation through DRS?

I calculated band gaps for pure and doped metal oxide through DRS and when I presented my work in a conference I was suggested to calculate error bar.

03 March 2013 7,054 1 View

What are the reasons for peak broadening in the case of nanoparticles compared to the bulk?

It is well known fact that peak broadening occurs when the particle size falls in nano range.

03 March 2013 720 19 View

Is there any model to determine the concentration of defects and vacancies in semiconductors?

I am working on modifying the defects and vacancies by doping. I am studing through PL the vacancies and defects but there are controversies in the contribution of emission by vacancies and...

03 March 2013 1,385 14 View

How to interpretate SAED pattern for lattice spacing and lattice fringes?

From HRTEM image

12 December 2012 1,520 4 View