STRAIN ENGINEERING OF THE ELECTRONIC STRUCTURE OF 2D MATERIALS

0468132 - ÚFCH JH 2017 RIV CZ eng C - Conference Paper (international conference)
del Corro, Elena - Peňa-Alvarez, M. - Morales-García, A. - Bouša, Milan - Řáhová, Jaroslava - Kavan, Ladislav - Kalbáč, Martin - Frank, Otakar
STRAIN ENGINEERING OF THE ELECTRONIC STRUCTURE OF 2D MATERIALS.
NANOCON 2015: 7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION. Ostrava: Tanger Ltd; Czech Soc New Mat & Technologies; Reg Ctr Adv Technologies & Mat; Mat Res Soc Serbia; Norsk Materialteknisk Selskap, 2015, s. 19-24. ISBN 978-80-87294-63-5.
[International Conference on Nanomaterials : Research and Application /7./. Brno (CZ), 14.10.2015-16.10.2015]
R&D Projects: GA ČR GA14-15357S
Institutional support: RVO:61388955
Keywords : 2D materials * graphene * electronic structure
Subject RIV: CG - Electrochemistry

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.
Permanent Link: http://hdl.handle.net/11104/0265989