In this book, the reader will find some of the latest research results in the field of engineering science and materials application which were presented at the 4th International Conference on Science and Technology Applications (ICoSTA, November 1-2, 2022, Medan, Indonesia).Synthesis techniques, process characterization and structural analysis of several types of materials such as nanocomposites and optical materials are interesting discussions that are specifically comprised here in one of the chapters. Special chapters related to research on natural materials and fundamental science related to the observation of physical properties, etc. are also presented in this book. The book will be helpful to a wide range of specialists in the field of material sciences, mechanical engineering, construction, environmental protection, applied mechanics and signal and image processing.
