Muhammad Irfan

5 Questions 5 Answers 0 Followers

Questions related from Muhammad Irfan

What are sources/equipment's generating Alternating Magnetic field at high frequency (300 - 500 kHz)?

A nano-composite material (polymer doped with Magnetic Nanoparticles), just need to be tested to study for any heat generation in the presence of alternating magnetic field only. For that purpose...

12 December 2019 5,099 1 View

What is the difference in Mag NP's of single domain and Superparamagnetic? with heat generation point of view e.g Neel's & Brownian relaxation ?

As given in figure 3 of ref paper attached, that magnetic nanparticles of single domain and superparamagnetic type are magnetized in the same direction. My question is than what is the difference...

06 June 2018 1,280 3 View

Is it possible to distribute iron oxides Np's in water, I tried with tip-sonicator but nanopaticles quickly set at the bottom of container ?

I am trying to prepare a polymer nanocomposite solution, the plan is to first prepare polymer separately and separately distribute iron oxide nanoparticles (having no coating) in de-ionized water....

04 April 2018 897 6 View

PNIPA shows LCST at 32C. Below LCST it absorbs water molecules, do these H2O molecules chemically attached there or just entraped ?

Poly(N-Isopropylacrylamide) shows a phase transition at lower critical solution temperature (LCST) 32 C. Below 32 C it absorbs water molecules but when temperature is increased above 32 C it shows...

10 October 2017 2,172 0 View

Why PNIPAAm is a negative temperature responsive polymer ?

Please explain .

06 June 2017 9,782 4 View