Project

Title
Hybrid van der Waals heterostructures. Synthesis and studies of electronic and mechanical properties at the nanoscale with data classification by machine learning algorithms.
Period
September 2 2019 - September 1 2023
Grant
NCN Sonata Bis 8
Leader
University of Lodz (UL) - dr Paweł Dąbrowski
Objectives
Two dimensional (2D) materials have attracted much attention due to their unique properties which are different from those observed for bulk structures. Although there is significant work devoted to 2D materials growth itself, more challenging tasks are related to the growth and studies of the hybrid systems in which two or more 2D materials systems are combined by the van der Walls interactions. The main aim of this project is to obtain clean and high quality heterostructures of 2D materials including dielectric, conductor and semiconductor layers which allow for further studies of their electronic and mechanical properties. The investigations planned will allow us to show how the interactions between the materials influence the properties of such heterostructures in the new complex system. During proposed project the following hypotheses will be verified:
  • There is possibility of synthesis of stable heterostructures in-situ by combining molecular epitaxy and chemical vapor deposition growth.
  • There is a general mechanism which can describe the electronic and mechanical properties of created hybrid structures driven by interaction between layers.
  • The spin polarized charge carriers can be generated and transported effectively in van der Waals heterostructures.
  • Classification based on machine learning algorithms combining results of scanning tunneling spectroscopy, atomic force spectroscopy and Kelvin probe microscopy allow for identification of the correlation between synthesis parameters and properties of hybrid materials.