John PartheniosInstitute of Chemical Engineering Science of FORTH (FORTH/ICEHT)
He is a principal scientist at the Institute of Chemical Engineering Science of FORTH (FORTH/ICEHT), Greece with a long experience in the study of mechanical properties of graphene, the production and characterization of high volume fraction carbon nanotube and graphene based polymer nanocomposites. He has also expertise in developing innovative instrumentation techniques for non-destructive testing of material, targeting at the use of spectroscopic techniques (Raman, TERS and photoluminescence spectroscopies) in combination with Atomic Force Microscopy for stress/strain and temperature sensing in nanocomposites reinforced by graphitic nanostructures (Graphene, GO, CNTs, Buckypapers, CNT yarns and carbon fibres) and 2D materials (MoS2, WS2 etc.). In addition, his expertise covers the production of two dimensional materials such as graphene and MoS2/ WS2 under Chemical Vapour Deposition conditions. He is a distinguished member of the Hellenic Physical Society and Co-founder of the FORTH Graphene Centre. He has published over 60 papers in prestigious journals (Nature Communications, Nanoletters, ACS Nano, 2DMaterials etc.) and more than 140 presentations in National and International conferences.
Title：Two dimensional materials under mechanical strain
SymposiumStrategic Frontier
Starting Time
Ending Time
Abstract
Since the discovery of graphene just over a decade ago, a variety of two dimensional (2D) materials (e.g., transition metal-dichalcogenides etc.) have been discovered. The application of mechanical strain in single- and few-layer graphene as well as in other 2D materials (MoS2, WS2) is an important perturbation to tune their optical and electronic properties, making “strain engineering” a feasible approach for a wide range of potential applications. Moreover, mechanical interactions between 2D materials and various substrate materials induced deformations and are essential for integrated device applications of 2D materials.
Raman spectroscopy has been proven a very successful technique to study the influence of mechanical strain in 2D materials under uniaxial tension, compression or hydrostatic (biaxial) strain. The monitoring of optical phonons seems to be the clearest and simplest way to quantify the macroscopic stress/strain imparted to 2D membranes. In this talk, recent results on the uniaxial and biaxial Raman response of selected 2D materials will be presented and discussed. Emphasis will be given on the perspectives in the design of graphene based nanocomposites and flexible electronics.
Follow us on WeChat
京公网安备 11010802030754号