Abstracts Book - IMRC 2018

• SA6-P115
CRYSTALLIZATION PATTERN OF ULTRA-THIN
Argelia Perez 1 , Rosa Maria Quispe 2 , Michael Mcconney 3 , Abigail Juhl 3 , Nicholas Glavin 3 , Jianjun
Hu 3 , John E Bultman 3 , Christopher Muratore 4
1 Hospital General de Mexico, Unidad de Investigacion y Desarrollo Tecnológico, Mexico.
2
Hospital General de Mexico, Unidad de Invetigación y Desarrollo Tecnológico, Mexico. 3 Air
Force Research Laboratory, Materials and Manufacturing Directorate, United States.
4 University of Dayton, Chemical and Materials Engineering, United States.
Two-dimensional (2D) materials, such as graphene and MoS2 have been
attracting wide interest for their high surface-to-mass ratio and unique physical
and chemical properties. These kinds of materials are considered 2D because
they represent the thinnest unsupported crystalline solids that can be realized;
they possess a combination of large, tunable electronic bandgaps, optical
transparency, and mechanical flexibility. In this work experiments were carried
out to examine pulsed laser annealing of ultra-thin films of MoS2 on flexible
substrates (PDMS) with 4 different modulus values of elasticity. Raman
spectrometry was used to characterize the degree of crystallization before and
after laser annealing. These materials are of interest to the healthcare industry
for applications involving ultra-sensitive and ultra-selective vapor or liquid phase
detection. Despite the promise these materials show, development of sensors
has been slow due to challenges associated with large-scale synthesis of 2D
materials. Laser annealing of amorphous TMD films is one avenue towards large
area applications that is particularly useful for flexible substrates. The technique
has only recently been demonstrated, so any scientific results in this area are
novel and eagerly anticipated by flexible electronics community. As a result,
existing flexible technology can enable the long sought after large-area highperformance
flexible devices that can be manufactured at economically viable
scales.
Keywords: MoS2, films, anneling
Presenting authors email: argeliapp@ciencias.unam.mx