In this volume we introduce the proceedings of the 7th international conference on nanostructures, nanomaterials and nanoengineering 2018 (icnnn 2018) and 2018 international conference on materials technology and applications (icmta 2018), sapporo, hokkaido, 26th-29th oct, 2018. The collection presents readers with the new valuable and unique knowledge which cover the specific areas of materials science: composites; nanomaterials; alloys and metals; materials and technologies for opto- and microelectronics; materials and technologies in biomedicine, waste recycling and environmental engineering; building materials.
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