Nisar Ahmed

13 Questions 7 Answers 0 Followers

Questions related from Nisar Ahmed

How we can efficiently deposit cathode materials like NCA, NMC or LFP using Thermal Evaporation?

We are facing hurdles in achieving desired deposition rates while depositing cathode-based materials via thermal evaporation. Despite starting with a vacuum setup reaching up to 10^-7 torrs,...

04 May 2024 7,904 1 View

Is very high impedence value (in millions ohms) in EIS for anti-corrosion application is desireable?

Dear RG Family, I am working on certain aluminide-based coating systems for anti-corrosion applications. I performed different electrochemical tests including EIS and Tafel after immersion in 3.5...

18 January 2023 1,168 5 View

How can we achieve single crystal (110) Rutile (Titanium dioxide) thin film?

I am planning to grow certain metal oxide films using chemical vapor deposition. For that, I need any single crystalline (110) substrate. Due to the non-availability of such material here. I am...

21 November 2022 3,164 1 View

Does the distance between the working electrode and other electrodes effects the impedance value of the Nyquist plot in EIS analysis?

Usually, we evaluate the anti-corrosion performance of our specimens via EIS in a 100 ml beaker filled with 3.5% salt solution. In our research facility, we employ CH instruments electrochemical...

26 March 2022 7,161 6 View

Which type of AFM image I should report for irradiation damage?

I have certain metallic films treated via ion beam irradiation. I am analyzing the evaluation in topographical features. I have used NANOSURF FLEX AFM for the particular characterization. For...

28 January 2022 2,260 3 View

Can we test electrode material for Li ion batteries by EIS, CV without cell fabrication? If yes, then what should be electrolyte & electrode assembly?

We are going to fabricate silicon based anode materials on copper foil. We are targeting to enhance cyclic stability of anode as a result of Li ion insertion. In literature, mostly it has been...

10 January 2022 7,273 2 View

We are not getting phase change in EIS 4-electrode assembly?

We have synthesized certain electrode material for DSSC application and coated electrodes material on FTO. We have connected one electrode with counter and reference electrode assembly and the...

26 August 2021 7,911 3 View

What is the significance of no of electrons in Tafel analysis for corrosion rate determination? What value should be used for pure metals & alloys?

We are doing corrosion analysis for various coatings in 3.5% NaCl solution using an Electrochemical workstation CHE 660. The electrode assembly is consists of Ag/AgCl as a reference, Pt wire as...

08 August 2021 4,204 3 View

How can we measure the electrical conductivity of viscous solution? Can we use EIS for that purpose?

We have a polymer solution composed of Polyvinylpyrrolidone (PVP) and ethanol. The solution is quite viscous. We have an Electrochemical workstation available in our lab. Can we measure the...

10 June 2021 910 4 View

How can we minimize reflective power for hydrogen and methane gases in argon plasma during Plasma Enhanced Chemical Vapor Deposition (PE CVD)?

We are depositing hydrogenated DLC by using Plasma Enhanced Chemical Vapor Deposition using methane and hydrogen (as precursor gases) along with argon (as plasma gas). The system is equipped with...

07 June 2021 7,317 2 View

Can we detect micropores in irradiated metallic thin films by cross sectional SEM image? Can we use any etching agent for better result?

We have deposited 2 microns metallic thin films on graphite using physical vapor deposition. Then we irradiated those samples at different irradiation doses (by varying ion energy and fluence)....

24 May 2021 8,212 4 View

Can't recognize exact phase and PDF card no of Silicon carbide in XRD?

We have deposited silicon carbide on carbon substrate using one PVD technique. Due to amorphous behavior of SiC at low deposition temperature, we performed heat treatment of those films at...

23 February 2021 2,405 3 View

Can we coat ceramic materials using flame spray or powder combustion spray?

Ceramic materials like Chromium oxide and Aluminium oxide have high melting point. The combustion flame can reach up to 3000 centigrade. However, The velocity of particle may not allow ceramic...

23 October 2020 3,099 5 View