Master's Thesis from the year 2013 in the subject Physics - Quantum Physics, Shahjalal University of Science and Technology (Department of Physics), course: Nanostructure Physics, language: English, abstract: We have investigated electron transmission through non-tunneling regime of a nanostructure called single rectangular tunnel barrier. The book contains a successful and comprehensive analytical, numerical, qualitative and quantitative account of parametric dependence of maxima and of minima of oscillatory transmission coefficient. Some of the variations are surprising. The book contains background on Quantum Mechanics, Microelectronics and Nanostructure Physics so that readers having no background of Microelectronics and Nanostructure Physics can assimilate the book completely.