Kakoli Bhattacharya

10 Questions 18 Answers 0 Followers

Questions related from Kakoli Bhattacharya

Overload while perfoming CV measurements in Versastat potentiometer?

Hello, I am trying to perform cyclic voltammetric studies using Versastat 3 Potentiometer. For the first study, I have used a Pt wire with diameter 1.6mm as working electrode, a Pt sheet as...

05 May 2018 7,511 8 View

How can we calculate the demagnetizing field around a spherical magnetic nanoparticle?

When a magnetic body is placed in a uniform magnetic field, there is a demagnetizing magnetic field generated inside the nanoparticle which is opposite to the direction of the applied field. We...

09 September 2016 8,529 4 View

How can I make the PVP coated iron oxide nanoparticles stable in water?

I have synthesized PVP coated iron oxide nanoclusters( approx. 250-300nm diameter) using hydrothermal method. But the nanoparticles are not very stable in water and keep falling down. How can I...

07 July 2015 4,681 3 View

How to determine the extinction coefficient for carbon quantum dots?

For determining the concentration of a colloidal solution of carbon quantum dots I need to calculate the extinction coefficient. How can I determine the extinction coefficient from optical...

12 December 2014 8,625 6 View

Why is a kink appearing at around 160 K in the M-T curve of Fe3O4 nanospheres?

I have prepared Fe3O4 nanospheres using hydrothermal process. The nanospheres have a layer of PVP coating on the surface.The size of the nanospheres were found to be around 200-300 nm while the...

10 October 2014 5,776 15 View

How can I measure galvanostatic charge-discharge in Biologic SP-150?

I am trying to measure the galvanostatic charge discharge of metal oxide nanoparticles using Biologic SP-150 system. But I am unable to keep the voltage window constant while taking the...

08 August 2014 8,036 5 View

How does the magnetic property of a solid magnetic nanosphere differ from that of a mesoporous magnetic nanosphere?

I am trying to study the magnetic properties of mesoporous magnetic systems in comparison to solid nanoparticles. Can I expect spin tunneling through the pores of the mesoporous nanosystems?

04 April 2014 1,275 7 View

What is the difference between carbon quantum dots and graphene quantum dots?

I have prepared carbon quantum dots by a simple hydrothermal treatment of glucose. Recently I got some papers on fluorescing Graphene Quantum dots. I was wondering whether both of them Graphene...

03 March 2014 4,707 11 View

How do you determine the crystal planes from an XRD pattern?

I have been trying to index the planes from an XRD pattern. But the 2theta value of the nanoparticles happens to match with various other phases of the same sample. What is the correct method to...

12 December 2013 6,232 10 View

Do we need to digest laboratory treated water samples for arsenic remediation before analyzing under atomic absorption spectroscopy?

I am trying to remove arsenic from laboratory water using iron nano particles. After treating with nano particles, do we need to digest the water sample using nitric acid? I have prepared my...

05 May 2013 3,030 14 View