Nanocrystalline Zn1−xMgxO thin films with an average particle diameter of 60nm have been deposited on glass substrates using a sol-gel spin-coating technique. Within the range of compositions, 0⩽x⩽0.20, the optical band gap could be tuned between 3.40 and 3.83eV. The nonlinear optical transmission in the visible spectral region is investigated using ultrafast (100fs) and short (7ns) laser pulses at off-resonant wavelengths. The observed nonlinearity is strong and is comparable to that recently obtained in ZnO nanocomposite layers ion-implanted with Cu+ ions.
The extensive use of social media in India has been on the rise among the new generation youths. In today's world, use of social media has become an integral part of everyday life of human being. This paper throws a light on pattern of social media usage and its impact on youth. The new age social networking culture has been accepted and got an enthusiastic response. It is evident from the studies that social media has both positive and negative impact on youths.
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