**Meet the editors**

Mehdi Khodaei received his bachelor's degree in 2005 and master's degree in 2008 from the Department of Materials Engineering, Isfahan University of Technology, Iran. In 2014, he obtained his PhD degree from the University of Tehran, Iran in Nanotechnology-Materials Science under the supervision of Professor Seyyed Ali Seyyed Ebrahimi and under the advisement of Professor

Sunggi Baik. His PhD thesis was on magnetoelectric multiferroic nanocomposite thin films and he has authored 10 peer-reviewed papers in this field. He was also a visiting researcher at Pohang University of Science and Technology (POSTECH), Korea, (March 2012–June 2013) working at Ferroelectric Nano Materials Lab. under the supervision of Prof. Sunggi Baik as well as Pohang Accelerator Laboratory (Korea Synchrotron facilities) under the supervision of Dr. Yong Jun Park. He is currently working as an assistant professor at Faculty of Materials Science and Engineering, K.N. Toosi University of Technology, Iran.

Luca Petaccia is a scientist and the head of the BaDElPh beamline at the Elettra Synchrotron Light Laboratory in Triest, Italy. He graduated in Physics, cum laude, from the Sapienza University of Rome in 1995 and earned his PhD degree in Physics from the University of L'Aquila in 2002. He was also a research fellow at the TASC-INFM national laboratory of Triest from 1997 to

2001. Then he has joined in Elettra as a beamline scientist and he has been promoted in charge of BaDElPh since 2007. He has a wealth of experience in photoemission spectroscopies and, in particular, in high-resolution angle-resolved photoemission spectroscopy (ARPES), which he exploits to carry out research in the fields of surface and nano science. To date, he has contributed over 100 publications in international peer-reviewed journals and has given several invited and oral contributions at various international meetings, schools, and conferences.
