The 59th volume of the "Journal of Nano Research" contains peer-reviewed papers by the results of the research from the field of synthesis and properties of various nanomaterials and nanostructures for the biomedical and industrial application. We hope that this volume of the journal will be useful and interesting for a wide range of engineers, scientists, and students whose activity is related with the creation and using of nanomaterials and nanotechnologies in different branches of human activity.

The 54th volume of the "Journal of Nano Research" contains peer-reviewed papers by the results of the research from the field of synthesis and the use of various nanomaterials and nanostructures. We hope that this volume of the journal will be useful and interesting for a wide range of engineers, scientists, and students whose activity is related with the creation and using of nanomaterials and nanotechnologies in different branches of human activity.

Since their discovery in 1977, the evolution of conducting polymers has revolutionized modern science and technology. These polymers enjoy a special status in the area of materials science yet they are not as popular among young readers or common people when compared to other materials like metals, paper, plastics, rubber, textiles, ceramics and composites like concrete. Most importantly, much of the available literature in the form of papers, specific review articles and books is targeted either at advanced readers (scientists / technologists / engineers / senior academicians) or for those who are already familiar with the topic (doctoral / postdoctoral scholars). For a beginner or even school / college students, such compilations are bit difficult to access / digest. In fact, they need proper introduction to the topic of conducting polymers including their discovery, preparation, properties, applications and societal impact, using suitable examples and already known principles/knowledge/phenomenon. Further, active participation of readers in terms of "question & answers", "fill-in-the-blanks", "numerical" along with suitable answer key is necessary to maintain the interest and to initiate the "thought process". The readers also need to know about the drawbacks and any hazards of such materials. Therefore, I believe that a comprehensive source on the science / technology of conducting polymers which maintains a link between grass root fundamentals and state-of-the-art R&D is still missing from the open literature.

Nanotechnologies have already attracted massive interest in multiple fields of science and industry. In the past decades, we have witnessed the progress in micro-level experimental techniques that revolutionize the material science. Designing new materials based on the knowledge of mechanics of their building blocks and microstructure manipulations at nanometer scale have become a reality. Nanoindentation, as a leading micro-level mechanical testing technique, has attracted wide attention in numerous research fields and applications. Nowadays, an extensive variety of testing areas ranging from classical thin coatings in machinery engineering, electronics and composites to far fields of civil engineering, biomechanics, implantology or even agriculture can be covered with this universal testing tool. The book aims to be a walk through achievements in some of the distant fields and to give a brief overview of the current frontiers in nanoindentation. Although it is not possible to cover the whole width of the possible themes in one book, it is believed that the reader will benefit from the topics variety and the book will serve as a useful source of literature references.

Polylactic Acid-Based Nanocellulose and Cellulose Composites offers a comprehensive account of the methods for the synthesis, characterization, processing, and applications of these advanced materials. This book fills a gap in the literature as the only currently available book on this topic. This book: Describes the procedures for the extraction of cellulose materials from different sources and characterization methods adopted for analyzing their properties Covers properties, processing, and applications of PLA biocomposites made using the extracted cellulose Discusses the effect of reinforcement of cellulose on the biopolymer matrix and the enhancement of biopolymer properties Examines current status, challenges, and future outlook in biocomposite research and applications The book serves as a reference for researchers, scientists, and advanced students in polymer science and engineering and materials science who are interested in cellulose polymer composites and their applications.

Discusses the sustainability of nanomaterials in tribology, economic aspects of nanomaterials, mechanisms, and mathematical models in detail. Highlights the importance of tribology of green lubricants, green additives, and lightweight materials. Covers special topics such as orthopedic implants, dental tribology, biocompatible nanomaterials related to the role of nanomaterials in bio tribology. Presents interdisciplinary aspects such as sustainability, tribology of biological systems, and chemical aspects of nanomaterials. Explains research advancement and recent trends such as green additives, nano greases, nanocomposite tribology, and the concept of green tribology with respect to nanotechnology.

The 56th volume of the "Journal of Nano Research" presents readers with the collection of peer-reviewed papers by the results of the research from the field of synthesis and the use of various nanomaterials and nanostructures. We hope that this volume of the journal will be useful and interesting for a wide range of engineers, scientists, and students whose activity is related with the creation and using of nanomaterials and nanotechnologies in different branches of human activity.