Adnan Afzal

7 Questions 1 Answers 0 Followers

Questions related from Adnan Afzal

What is meant by X-ray density which is measured in XRD pattern? Is there any relation between bulk density, X-ray density and porosity?

In case of my XRD characterization, the bulk density and X-ray density decreased while porosity increased after substitution of Manganese in Cr2O3. So, how can i justify these results?

07 July 2016 5,580 7 View

What is the significance of hydrodynamic size of particles which is measured by Dynamic Light Scattering (DLS) ?

I have read in an article that "Maximum hydrodynamic size of the Cr2O3 particles was observed as 120 nm and 350 nm for MnCr2O4." what's the significance of this consequence? I mean to say that...

04 April 2016 6,999 1 View

The hydrodynamic size of nano-particles is mostly greater than 100 nm, then how can we say that these are nano-particles? Is there any justification?

I observed frequently that hydrodynamic size taken by DLS is subsequently greater than 100 nm, then why do we call these are nano-particles,even i think these are not nano-particles according to...

04 April 2016 1,666 3 View

What is the importance or necessity of dynamic light scattering (DLS) characterization for nano particles?

I wanna ask why do we use DLS to measure the size of nano particles, as once we measured by SEM or TEM, which more precise than DLS.

02 February 2016 5,990 4 View

What is the significance of vacuum in nanotechnology?

what is the basic concepts of vacuum in nano technology? how vacuum is help full in that technology?

11 November 2014 5,676 6 View

What is significance of Schrödinger equation in quantum mechanics?

I am confused for the time dependent and time independent Schrodinger equation.

08 August 2014 3,117 17 View

What is the concept of reciprocal lattice? What is the need of using reciprocal lattice?

I wanna to know the basics of the reciprocal lattice and use of it in solid state physics.

08 August 2014 7,726 8 View