40 Questions 73 Answers 0 Followers
Questions related from N. Venkatathri
We know impact factor is calculated based on citation. What formula used in it. Is it simple, number of citations divided by number of articles published or any thing else.
02 February 2016 5,779 0 View
Basicity is a important criteria to measure the catalytic effect of many solids like zeolites. So it is necesary to qualitative and quantitative analysis of it.
10 October 2015 281 2 View
It is known that carbon nano fibers are known recently. However I am unable find its probable applications. Some suggestions are in fuel cell. What are the others.
02 February 2015 937 5 View
In carbon nano tubes, single wall, double wall and multi wall carbon nanotubes are possible. In case of multiwall carbon nanotubes, maximum how many number of walls are possible.
01 January 2015 6,231 6 View
Normally absorption or emission of ultraviolet visible light occur in the same region. If bathochromic or hypsochromic shift occurs it should go to other regions. Normally we are not observing...
12 December 2014 3,846 2 View
It is known that we can get smaller particles by increase the rate of crystallization. How can we achieve that ?
12 December 2014 6,227 2 View
We are using microwaves in oven, and not Infrared. Actually Infrared rays produces heat. Why is it not used.
12 December 2014 700 3 View
We know that we can prepare nano-materials by sol-gel, co-precipitation methods. However, when we prepare nano-materials with these methods it often results in amorphous materials. In this...
12 December 2014 8,919 11 View
It is known that in Transmission electron microscope, the electrons are diffuse through films less than 300 nm. However, Scanning electron microscope coupled with Electron diffraction X-ray...
12 December 2014 10,112 8 View
If we use pH meter for concentrated strong acid, the pH comes in negative value. However I did not experience more than 14 pH. But is it possible, I like to know.
10 October 2014 8,126 1 View
We know that Nitrogen and Oxygen are major content of atmospheric air. For gas chromatographic applications, it has to be separated to pure form. How is it carried out.
10 October 2014 1,666 4 View
We can see many varieties of thin film in literature. I like to know what is mean of it. Is it like membranes. Will it be useful in sensors. I like to to know more about it. Is it prepared...
10 October 2014 9,646 8 View
There is research on various morphological materials. One among them is nano rods. I like to know their possible applications.
10 October 2014 8,783 1 View
I assume that is it a reaction of methane with a nickel oxide-supported catalyst, over a fixed bed downflow reactor, where we can obtain carbon nanotubes as well as hydrogen.
10 October 2014 3,598 6 View
The white light from sun is having VIBGYOR colours. Among this Violet is having lower wave length. However only blue is scattered more in sky and land than others. Why is it so ?
09 September 2014 3,329 2 View
Normally polymers are inert. But some of the polymers are known to be conductive. How are they prepared? Are they metal topped polymers?
09 September 2014 8,447 13 View
It is known that Absorption, Emission and scattering property of light can be used in spectroscopy. Is there any other property of light can be used for spectroscopy.
09 September 2014 231 11 View
Refractive index is a basic property of a compound some thing like boiling point, melting point and density. Eventhough variety of instruments are available in market, it needs are not much.
08 August 2014 1,241 1 View
Agglomerated solid particles can be separated by ultrasonication. How does it happen?
08 August 2014 6,187 3 View
Zeolites are strongly acidic compared to silico aluminophosphates. I like to know the reason.
08 August 2014 6,455 3 View
It is known that it is derived from graphite. In what form is it.
08 August 2014 1,762 1 View
Carbon allotropes are in different colour. Eg. coke, graphite and charcoal in black, diamond in white, graphene in other color etc. What is the reason?
08 August 2014 4,680 3 View
In Absorption UV-Visible spectroscopy, the absorption is proportional to concentration according to Beer Lambert's law. However, this is not followed in higher and low concentration of a...
08 August 2014 4,456 36 View
Nano materials are prepared by top down and bottum up approach methods. In this bottum up more convenient. Very specifically sol-gel methods are most convenient one. By varying synthesis...
08 August 2014 8,770 16 View
Which involves triple phase. It is especially used in polymerization and some are zeolitic materials catalysis.
08 August 2014 7,441 4 View
There are numerous numbers of porous materials available in literature. However, carbon nanotubes are chosen for this study. What is the reason for it? If we store hydrogen in it, how to deliver...
08 August 2014 9,654 15 View
The Allotropes of carbon have various colours, for example graphite and diamond. I want to know what colour are carbon nanotubes. Whether single wall and multi wall carbon nano tubes are having...
07 July 2014 3,037 3 View
In recent times, number of carbon allotropes are known. If we use these as template to fabricate any new material, we should be able to remove it effective way. Of course one way is to oxidative...
07 July 2014 9,068 1 View
We know the electrons are in particle and wave nature. If they are in wave nature, they should have some frequency.
07 July 2014 1,877 2 View
In case of functional mechanism and applications.
07 July 2014 1,436 1 View
To find out a particular solid is photocatalytic or not, the above energy band gap is useful.
07 July 2014 7,033 6 View
I assume that the shell in hollow core shell materials will be weak, so it is easy to break.
06 June 2014 260 1 View
Normally we also use to estimate the pore width from XRD first peak position. If it is so, in some layered materials and thermally unstable materials are having peak at lower two theta. How do...
06 June 2014 5,305 6 View
I hope, it is a method which involves bottum up approach.
06 June 2014 911 1 View
If not how to analyze it?
06 June 2014 9,322 6 View
When we conduct photo catalysis in presence of sunlight, it is necessary to measure the intensity of sunlight at different time intervals.
05 May 2014 7,948 3 View
It is known that sunlight has all the visible lights and cosmic rays (probably gamma rays), but what about the other wavelengths? If they are available, can one filter it and use it for spectroscopy?
05 May 2014 8,647 8 View
Transmission electron micrograph can visualize the particle up to nano scale. If there is particle size lesser than that, how can we identify it? I think one way is to increase the power of...
05 May 2014 5,017 7 View
Sometimes it is difficult to differentiate isolated and agglomerated nanoparticles. Ultrasonic is helpful to isolate agglomerated nanoparticles. Practically it is difficult to isolate the fused...
05 May 2014 6,018 3 View
It is equal to a isolated atom.
04 April 2014 6,569 7 View
