Physics - Sciene

The main problem is the replacing of Hg atom by covalent atoms such as (Cu,Sn) atoms in the compound ((H )B C C ) by consider (x=0-1). Firstly, the high temperature superconductor of (HgB C C ) Hg-1223 had been synthesized experimentally by solid state reaction. The high temperature superconductor (CuB C C ) Cu-1223, (SnB C C ) Sn-1223 had been synthesized by solid state reaction.There are many parameters affected the preparation technique such as flow of oxygen, sintering temperature and compacted pressure.

          This project involves the studying of both optical and electrical properties for the poly methyl methacrylate/zinc oxide composite. These materials were selected because they have an industrial applications and available in local market.Zinc oxide powder with different concentration (4, 8, 10 and 12) % from the total weight was mixed carefully with PMMA.

The target of this research is to prepare nano silver particles by laser ablation in both deionized and magnetized water. The properties of nano silver particles and their bacterial effects with different parameters’ were studied. The magnetic water was laboratory preparing by square magnets with magnetic flux of 200 mT applied on the deionized water which pass through it 10ns Q.swiched Nd-YAG  laser of wave length 1064nm with different energies and different laser pulses number were used with and without applied electric field.