Rheology is usefull for humanity and since centuries ago their concepts are applied. The casting of iron and others metals, the processing of ore, the extrusion of polymers, the manufacturing of foods and drugs, oil explotation, processing of natural rubber latex (NRL) etc. All or almost of all implies on knowledgment of rheology. For these reasons, this issue aims to bring new discussions about the rheology applications in distinct industrial sectors.

Presently, there is a desire and a need to serve the scientific and engineering communities by producing a special issue of the esteemed American Journal of Materials Science, which will have a focused compendium of scholarly works describing the production, characterization, or usage of organic thin films and crystals with nano-particle dopants, as such material systems can have broad applications of being incorporated into electronic, optoelectronic, sensors and other instrumentations. The objective of this initiative is to fulfill the impending desire and need by determining properties and usage of Condensed Matter systems of atoms, molecules, and structures. Finally, the scope of this project embraces the important issues of crystals and organic thin films with dopants as may be applicable to developing technologies.

We are pleased to announce SAP Journal is now preparing for its special issue, which will reflect the importance of sensors technology and their applications. The special issue on Sensor Technology aims to discover new methods and applicable materials for preparing and fabricating sensors. Also to search for technical solutions for problems that may occur in all sensor fields. Articles to be submitted should be original, unpublished contributions.

In the present special issue, we have focused on wear, fracture and fatigue properties in coating systems. We encourage researchers to submit their original articles, in which new, innovative and evaluable works have been performed, by both numerical and experimental techniques. Specifically, we are interested in researches that could be proposed in material characterizations and behavior evaluations of coatings under wear and fatigue phenomena, numerical and experimental techniques for coatings under wear and fatigue phenomena, applications of coatings in internal combustion engines and gas turbines, wear and friction phenomena in coatings, isothermal/un-isothermal fatigue behaviors in coatings, coating layers for improving fatigue properties and the wear resistance, depositing coatings by different spraying techniques, surface modifications with various types of coatings, etc.

Scientific Academic Publishing (SAP) has announced the publication of the special issue of American Journal of Materials Science (AJMS). This journal is an open access and it is dedicated to cutting-edge advanced and research activities in all experimental and theoretical aspects of materials in the fields of science and engineering.

This special issue deals with wide range of topics, which reflects the broad scope of the journal including synthesis, fabrication, processing, characterization, physical properties, and applications of all kinds of materials such as metals, semiconductors, superconductors, ceramics, glasses and ferroelectrics.

Dentistry is material based science. Furthermore, Dental materials such as Bioceramics, Composite Resin, Calcium hydroxide, NiTi alloys are used not only in dentistry but also in medical field. Recently, there are innovations in dental material science. Review of these current dental materials has implication on the nature and possible uses of these materials on dentistry and medicine.

Solid superacid catalyst is one of the most important areas of research and has assumed great relevance as an economic alternative to many homogeneously catalyzed, industrially important reactions. It can also be designed to give higher activity, selectivity, regenerability and longer catalyst life. Recently, various kinds of solid superacids have been developed. Superacid catalysts can be applied for different catalytic reactions such as; esterification, isomerization, alkylation, polymerization, cracking, other acid catalyzed reactions (acylation, etherification, acetalization, nitration, disproportionation, etc.). This special issue, on American Journal of Materials Science, focuses on recent advances in superacid catalysts; preparation, characterization and applications.

Composite Materials have dominated every area of our lives from cups to space crafts. Varieties of composite materials are blooming everyday, raising new challenges in machining these materials to the required shape and size. Advanced machining of composite materials are still under research and more need to be developed in this area. Hence this issue aims to bring the research works in this area to create a bench mark for the recent developments.

The present special issue “Photocatalyst for Energy and Environment” is dedicated to understand innovative ideas in solar energy harvesting nanomaterials like photocatalytic CO2 reduction to solar fuel. The main aim of this special issue is to search new ideas and understand basic science for the development in current photocatalyst technologies that have the capability to produce the solar fuel. Design and development of photocatalytic materials, its synthesis, will play an important role will also be covered in this special issue.

The present special issue “Energy harvesting nanomaterials” is dedicated to understand innovative ideas in energy harvesting nanomaterials like solar cells, supercapacitors, Li-ion batteries and redox flow batteries. The main aim of this special issue is to search new ideas and understand basic science for the development in current energy technologies that have the capability to change the current energy crisis. Design and development of nanomaterials, its synthesis, and device fabrications will play an important role will also be covered in this special issue.

Special issue will cover almost all research fields of tribology of advanced materials, which includes metals, nonmetals, ceramics, polymers , composites, tribology of nano-materials, nanotribology etc. The purpose of this special issue is to provide a chance to researchers and engineers to publish their research work useful for designing and developing advanced materials for , for extreme conditions of load, temperature, for automotive components, aerospace parts, bearings, bears, prosthetic joints etc.