Dmitry Levshov expert

Research Dmitry Levshov

Research team

Expertise

Optical spectroscopy of carbon nanotubes; Optical characterization of nanomaterials; Electron diffraction characterization of carbon nanotubes; Sorting of carbon nanotubes;

Experimental set-up for micro Raman and photoluminescence studies of individual one-dimensional Moiré crystals. 01/04/2021 - 31/03/2022

Abstract

Moiré crystals are the superstructures formed by the superposition of two periodic incommensurate lattices. In two dimensions, they exhibit peculiar quantum features ranging from Van Hove singularities and mini Dirac points to Hofstadter butterflies. The Moiré interactions may have even more fascinating properties in one-dimensional materials due to the quantum confinement and strong many-body interactions, but they are currently underexplored. In this project, we probe incommensurate double-walled carbon nanotubes as an ideal system for investigating Moiré physics in one-dimension. We will couple the widely wavelength-tunable laser set-up and microscope with the available spectroscopic instruments in the NANOrOPT research group to create a worldwide unique facility for wavelength-dependent high-resolution Raman and photoluminescence (PL) spectroscopy and microscopy on the same individual nanotubes. The micro Raman and PL studies will allow accessing fundamental physical properties of Moiré crystals, free of ensemble averaging effects in the highly polydisperse samples.

Researcher(s)

Research team(s)

Project type(s)

  • Research Project

Chirality-defined sorting and optical characterization of double-wall carbon nanotubes. 01/10/2019 - 30/09/2022

Abstract

This is a fundamental research project financed by the Research Foundation – Flanders (FWO). The project was subsidized after selection by the FWO-expert panel. The objective of the FWO's Research projects is to advance fundamental scientific research.

Researcher(s)

Research team(s)

Project type(s)

  • Research Project