Parna Ganguli

9 Questions 18 Answers 0 Followers

Questions related from Parna Ganguli

Is the nature (that is, form or shape) of peak (in a wavelength scan) in anyway an indication of the properties of a nanomaterial?

I have attached 3 photographs of the wavelength scan performed for silver nanomaterial (not washed or purified) synthesized by varying only the pH while keeping other factors constant. I want to...

22 March 2023 5,399 0 View

How can I determine the area covered by fungi on growth media plates, with the help of software?

Can ImageJ or any such software be used to determine the area covered by fungal growth as in the image attached to this question? If yes, then how? I require this for antimicrobial assays. Kindly...

06 December 2022 1,921 5 View

Why are silver nanoparticles preferred over other metallic nanoparticles for antimicrobial applications?

If silver nanoparticles show excellent antimicrobial activity then at the same time does this imply that their cytotoxic impact on mammalian cells will be more than other metallic nanoparticles?...

25 May 2022 6,496 4 View

How can I overcome dispersion issues faced while re-suspending powder nanoparticles?

I have synthesized Ag nanoparticles using a green route [salt: plant extract = 9:1 and added 100 microlitres of starch solution (100mg starch dissolved in 1 ml distilled water) to it]. I had...

04 January 2022 261 9 View

Which solvent would be suitable for washing (through centrifugation) fungal hyphae in order to get rid of the liquid media they have been grown in?

I want to know if just distilled water would be fine for this purpose or should I go for something like Phosphate buffered saline? My ultimate aim is to freeze-dry the fungal hyphae for SEM...

03 January 2022 8,495 3 View

How does the performance of AgNPs vary when they are directly coated on a substrate vs when they are embedded in solid matrices before application?

Is the surface area and accessibility entirely different in these two cases? If yes, then, does that have a significant influence on the performance? Since my work pertains to antibiofouling...

08 December 2020 6,403 3 View

Is there any correlation between the chemical nature of coating agent and incorporated nanoparticles, in terms of performance, for surface coatings?

Generally, the inclusion of nanoparticles in paints and coatings is meant to uplift the properties of the latter. Is there any such report where the chemical nature of the coating agent might...

04 December 2020 1,654 7 View

Do silver nanoparticles, incorporated in antimicrobial paints and coatings, suffer from surface oxidation, after being applied on a substrate?

Is there any report on surface oxidation of silver nanoparticles that are embedded in paints and coatings used against microbial fouling on buildings, monuments, etc? Also, what is the likelihood...

03 December 2020 2,749 6 View

Why do we soak anion exchange resin (I am using Amberlite resin XAD7HP (Sigma Aldrich)) in Ethanol- water prior to using it for adsorption purposes?

If the purpose of soaking anion exchange resin in water/ethanol is to open up its pores, then can we simply soak it directly in the sample being used for experiments(mine is plant extract in 50%...

22 November 2019 4,682 2 View