STRAIN ENGINEERING OF THE ELECTRONIC STRUCTURE OF 2D MATERIALS

1 CORRO del Elena
Co-authors:
1,2 PEÑA-ÁLVAREZ Miriam 3 MORALES-GARCÍA Ángel 1,3 BOUŠA Milan 1,3 ŘÁHOVÁ Jaroslava 1 KAVAN Ladislav 1 KALBÁČ Martin 1 FRANK Otakar
Institutions:
1 J.Heyrovsky Institute of Physical Chemistry of the AS CR, v.v.i., Prague, Czech Republic, otakar.frank@jh-inst.cas.cz
2 Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Spain
3 Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Czech Republic
Conference:
7th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 14th - 16th 2015
Proceedings:
Proceedings 7th International Conference on Nanomaterials - Research & Application
Pages:
19-24
ISBN:
978-80-87294-59-8
ISSN:
2694-930X
Published:
11th January 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
21 views / 7 downloads
Abstract

The research on graphene has attracted much attention since its first successful preparation in 2004. It possesses many unique properties, such as an extreme stiffness and strength, high electron mobility, ballistic transport even at room temperature, superior thermal conductivity and many others. The affection for graphene was followed swiftly by a keen interest in other two dimensional materials like transition metal dichalcogenides. As has been predicted and in part proven experimentally, the electronic properties of these materials can be modified by various means. The most common ones include covalent or non-covalent chemistry, electrochemical, gate or atomic doping, or quantum confinement. None of these methods has proven universal enough in terms of the devices’ characteristics or scalability. However, another approach is known - mechanical strain/stress, but experiments in that direction are scarce, in spite of their high promises.The primary challenge consists in the understanding of the mechanical properties of 2D materials and in the ability to quantify the lattice deformation. Several techniques can be then used to apply strain to the specimens and thus to induce changes in their electronic structure. We will review their basic concepts and some of the examples so far documented experimentally and/or theoretically.

Keywords: 2D materials, graphene, electronic structure, strain engineering, mechanical properties
Scroll to Top