Jasper Anandhi

19 Questions 21 Answers 0 Followers

Questions related from Jasper Anandhi

How r black holes formed ? How did the radiation from two black holes colliding in universe had an effect on earth on 2015?

What is the reason behind black holes for absorbing and emitting everything that goes by their way?

07 July 2017 5,288 3 View

Why is gravity taken as 10 m/s^2 while gravity is changing at some places like equator where gravity is less?

Weight depends on change in gravity while mass is a constant. so our weight decreases when we r at high altitudes. so it is is clear from this that gravity is changing . so how do people accept...

07 July 2017 832 2 View

Why have I got broadened peaks for my XRD graph?

I have slightly sharp peaks. Can anyone tell me from my graph whether my particles are nanoparticles or of amorphous nature? I have attached my file herewith. Some say that that my particles are...

12 December 2014 3,573 20 View

How do you calculate FWHM from 2theta and wavelength values?

Is there any formula to calculate manually FWHM? If it is so please give me the formula.

12 December 2014 1,291 1 View

What is the interpretation if we get a step like absorption in UV-Visible Spectroscopy?

I got so many peaks and it also increases what is the interpretation for it.

12 December 2014 8,475 16 View

What is the suitable dispersing liquid for cds and cdse?

We have added cadmium chloride, sodium sulphide, diethylene tri amine.

12 December 2014 4,388 2 View

What will be the difference in band gap value for nanoparticle from its bulk material?

I am getting band gap 1eV greater than that of bulk material. Whether it is correct or not? What range should I get for nanoparticle?

10 October 2014 1,058 6 View

How can I calculate the size of nanoparticles if they are not spherical?

I am getting rod shape and wire shape nanoparticles. Sherrer formula is applicable only for spherical particles. So how can I calculate the size of the particle?.

10 October 2014 7,044 14 View

How can I calculate the volume of hexagonal structured nano particles?

From XRD data the nano particle structure is hexagonal. How can I calculate a,c and volume if my two theta value is slightly deviated from standard value?

10 October 2014 9,958 9 View

How can I find out whether a synthesised material is nano or not?

The XRD results show the size of the particle is 5 nm. But TEM results show that the particle size range from 5-100 nm. How can I sure that the material is nano?

06 June 2014 879 28 View

What type of peak should I get for nanoquantum dots in XRD graph?

In XRD patterns around 10 peaks are present for the sample 1. Also, around 6 peaks are present for the sample 3. Also only one broad peak is present for the sample 2. In addition, XRD patterns for...

06 June 2014 3,041 5 View

How can I make 100ml 0f 1N of NH3? My molecular weight is 17.03g/mol and density is given as 1l=0.91 kg.

I want to prepare 100ml of 1N of NH3 . NH3 molecular weight is 17.03g/mol and density is 1l= 1.16kg. Can anyone tell me?

05 May 2014 5,969 6 View

What do multiple peaks signify in an XRD graph corresponding to nanoparticles?

I am getting more than three peaks in an XRD graph. How can I filter unwanted peaks in origin 6?

04 April 2014 7,393 6 View

What is the colour of CdSe nanoparticles?

I am getting a white colour. Is this correct?

04 April 2014 4,416 9 View

What is the best reducing agent used to synthesize CdSe nano particle?

I am using cadmium chloride and Sodium selenite as precursors in my synthesis at room temperature.

04 April 2014 6,327 6 View

Can thiourea be used as a sulphide source in the synthesis of cadmium sulphidee?

So far I have synthesized cadmium sulphide using sodium sulphide by chemical precipitation method but when I tried using thiourea there was no reaction taking place. Only a light yellowish color...

04 April 2014 4,080 6 View

How much can the band gap value of nanoparticles differ from the bulk?

I am working on CdS nanoparticles. I got a band gap value of 5.89 eV whereas the bandgap value of my bulk is 2.42 eV. I am using double distilled water as my solvent in UV studies. Why did I get...

04 April 2014 7,971 7 View

What capping agents would be suitable for the synthesis of CdSe and Cds nanoparticles?

I synthesized CdSe and CdS nanoparticles using DiEthyleneTriamine as capping agent by chemical precipitation method at room temperature. I took the precursors in the ratio 1:1:2. In TEM...

03 March 2014 7,581 3 View

Can DETA (diethylenetriamine) be used as a capping agent for cadmium sulphide and cadmium selenite nanoparticles?

I used the precursors and the capping agent in the ratio 1:1:2 but I haven't gotten good capping for my material. I used sodium sulphide as my sulphide source and I did my experiment at room...

03 March 2014 1,947 2 View