This book is intended for postgraduate students and young researchers. It aims to be helpful to the students of Physical Science, Chemical Science and Biological Science both in Theoretical and Experimental outcomes. The need to advance the field of Applied Science requires high quality, evidence-based research. One of the important features of this book is that it does not have a textbook structure. The chapters are written in a lucid manner so that even a graduate student with a limited knowledge will reap its benefits. The chapters of this book focus on a wide range of topics from thin films, positron annihilation, wire to dot nanostructures, neutrino oscillation, plant regeneration to medicinal plants, double perovskites, Biotinylation Technique and soon.