Abstracts Book - IMRC 2018

• SWMC-O005 Invited Talk
CHIRAL BILAYER GRAPHENE AND ITS POTENTIAL APPLICATIONS
Cecilia Noguez 1
1 Universidad Nacional Autónoma de México, Instituto de Fisica, Mexico.
Chirality, the asymmetric property of non-superposable mirror images, is
present in molecules and compounds that are essential for life. Chirality also
exists at the nanoscale, like in fullerenes, carbon nanotubes, nanoclusters, and
now in bilayer graphene. In this talk, the mechanisms that originate and control
chirality in nanoscale systems, such as, twisted bilayer graphene (TBLG) are
identified using a time-perturbed density functional theory and the unfolding
band structure method. The experimental realization of thin films with full
control of the structural handedness down to the atomic scale, which is possible
by stacking two graphene layers whose chiral properties are designed by an
interlayer rotation angle is investigated. The control of the interlayer angle of
rotation ï€ in the experimental procedure to construct 2D vdW
heterostructures is crucial to develop new devices like thin film transistors and
optical modulators with desired properties in nanoelectronics and
nanophotonics. Besides electronics, understanding how to control chirality at
the nanoscale would have a significant impact in pure and applied sciences;
providing a powerful tool for exploring and managing chiralityâۥdependent
phenomena, including circular dichroism spectroscopies, templated
enantioselective–growth in stereochemistry, electronic spin filters in spintronics,
among other fields. Here, we discuss these potential applications.
Keywords: Twisted bilayer graphene, van der Waals 2D heterostructures, electronic
and optical properties
Presenting authors email: cecilia.noguez@gmail.com