I want help in making superconductors at room temperature. A interestig thing about these superconductors is that in these the resistance and the potential difference is zero then also the current flows through it.i am just unable to understand it.

A good starting point would be to do extensive reading on superconductors so that you do understand them. You will then appreciate why making a high temperature superconductor is proving such a challenge to scientists and engineers. Until that point you are not asking for someone to help you make a room temperature superconductor, you are asking someone to do this for you. After all, what would your contribution be?

 

http://www.superconductors.org/history.htm'>http://www.superconductors.org/history.htm

http://en.wikipedia.org/wiki/Superconductivity

http://www.superconductors.org/

 

And once you have your head wrapped around that, you could dip into recent research papers:

http://scholar.google.com/scholar?start=160&q=superconductors&hl=en&as_sdt=0,44&as_ylo=2010