Dr. Nikolaos Kelaidis is a graduate of the Physics Department of the University of Athens, with a postgraduate degree in Microelectronics (Department of Informatics / NTUA) and a PhD from the Department of Materials Physics of the Aristotle University of Thessaloniki.

His scientific interests are semiconductor physics, the growth and electronic characterization of thin films and 2D materials (graphene, etc.) as well as their theoretical study using computational physics methods. Current research is centered in the areas of atomistic simulation of materials for energy applications (mainly photocatalytic

materials, transparent oxides, MAX phase ceramics) and 2D materials such as graphene and TI/WSM materials. 

Since 2012, he has been a postdoctoral research associate in Greece (NCSR "Democritus", National Research Foundation) and the UK (University of Coventry), working in materials physics and microelectronics. From 2012 to 2016 he worked as a postdoctoral researcher at the Epitaxy and Surface Science Lab (ESSL) of Dr. A. Dimoulas, at the Institute of Nanotechnology of NCSR "Demokritos" in the framework of the European project ERC "Smartgate" and the national project "Top Electronics". This work focused on the energy efficient Field Effect (FET) transistor device architecture and involved the development of thin films of two-dimensional (2D) materials such as graphene and topological insulators by the methods of CVD (chemical vapor deposition) and MBE (molecular beam epitaxy). The structural characterization was done by RHEED, XPS, ARPES, RAMAN, STM methods and was followed by electrical characterization. 

From January 2017 to September 2020, Dr. Nikolaos Kelaidis worked as a postdoctoral research associate at Coventry University (1 / 2017-12 / 2018) and at the National Research Foundation (NHRF), at the Institute of Theoretical and Physical Chemistry (ITHFX) (1/2019 - 9/2020). During this period, the candidate focused on computational science of materials, studying periodic systems with the help of DFT (density functional theory) studying applications in electronic systems such as 2D electronic devices, photovoltaics, batteries and sensors, in close collaboration with various experimental groups.

He has collaborated with various scientific teams at CNR-Italy (IMM, Bologna), at the University of Athens, Patras and Thessaloniki, as well as at the Institute of Nanotechnology of NCSR Demokritos. He has participated in >40 scientific papers and in various national and international conferences.

Since October 2020 he has been working at the ESSL laboratory on the project "2D crystalline thin films with non-trivial topology / 2D-TOP (435)" with the aim of developing and characterizing 2D materials, mainly topological insulators and Weyl semimetals.