**Preface to "Recent Trends in Coatings and Thin Film–Modeling and Application"**

This book contains twenty-seven chapters, whereas the Editorial is given in chapter twenty-eight. In this Special Issue total of 58 papers have been submitted for possible publication. After a comprehensive peer review, only 27 papers qualified accepted for final publication. Extensive uses of realistic applications are given in each chapter. To enable the readers' full understanding, a relevant list of references is also given at the end of each chapter for further study. I wish to thank all reviewers for their excellent suggestions and critical reviews on submitted manuscripts. I was fortunate enough to have prominent scholars who contributed with their original research work. I applaud all of them on successful completion of this Special Issue. Errors and omissions, if any are requested, will be gratefully acknowledged in the next possible Edition. Particularly, suggestions for improvement, scope and format of the book will be highly appreciated. I express my gratitude to MPDI for publishing this book and I also especially want to express my gratitude to the Section Managing Editor and my family and friends for their helpful cooperation. It is worth mentioning that this Special Issue has been cited more than 300 times in a very short period.

> **Rahmat Ellahi** *Editor*
