**Contents**


Reprinted from: *Materials* **2019**, *12*, 1977, doi:10.3390/ma12121977 .................. **125**


## **About the Editor**

#### **Akira Otsuki**

Akira Otsuki is a Professor of Facultad de Ingenier´ıa y Ciencias, Universidad Adolfo Iba´nez, ˜ Chile, and a Guest Professor specializing in non-destructive characterization and selective material recovery at Lulea University of Technology, Sweden. He is a member of several academic societies, including The Japan Society of Vacuum and Surface Science and the Electrokinetic Society of Japan. He has been acting as a journal editor and organizing Special Issues of journals relevant to non-destructive characterization and selective material recovery. His research is dedicated to the characterization and processing of complex materials, including colloids, waste materials, and natural ores.
