**About the Editors**

**Akif Kaynak** received his BSc degree from the University of Manchester in the UK, his MSc degree from Rutgers State University of New Jersey, USA, and PhD from the University of Technology, Sydney (UTS), in Australia. He is a leading researcher in stimuli-responsive polymers with soft actuators application within the School of Engineering, Deakin University, Australia. He has more than 130 publications, a book chapter, a book on conducting polymers and citations exceeding 3000, and an H-index of 29. He is a regular reviewer for various international journals and part of the advisory board of Sensors journal. He guest-edited issues on stimuli responsive polymers in Materials and finite element methods in smart materials and systems in Polymers, MDPI.

**Ali Zolfagharian** is an Alfred Deakin Medalist for Best Doctoral Thesis and Alfred Deakin Postdoctoral Fellowship Awardee, at Deakin University, Australia. He is a Mechanical Engineering lecturer in the School of Engineering, Deakin University, Australia. Dr. Zolfagharian is one of the foremost researchers in Australia in the 3D/4D printing of soft robots and soft actuators. He has thus far received \$206k funding from 3DEC (Deakin Digital Design and Engineering Centre), IISRI (Institute for Intelligent Systems Research and Innovation), and an industrial firm. His recent research outputs in the field of 3D and 4D printing include the gues<sup>t</sup> editing of four special issues in Polymers, Materials, Applied Sciences, one edited book, and 46 articles.

 (A.Z.)
