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Volume 4
Nano Research & Applications
ISSN: 2471-9838
Notes:
JOINT EVENT
October 04-05, 2018 Moscow, Russia
&
2
nd
Edition of International Conference on
26
th
International Conference on
Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018
Page 37
Yinfeng Li
Shanghai Jiao Tong University, China
Yinfeng Li, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-020
Mechanical properties and behaviors of low dimensional materials
W
ith the rise of nanotechnology and the advances in interdisciplinary research, low dimensional materials (LDM)
such as graphene have received intense global interest due to their unique physical and chemical properties
over traditional materials. This talk is aimed to summarize our recent studies on the mechanical properties and
behavior of LDM, including nanoparticles, graphene allotropies and two dimensional heterostructures, characterized
using molecular dynamic simulations combining first principle calculation as well as theoretical analysis. Atomistic
models of monolayer and multilayer graphene structures are constructed for the effect of surface functionalization
(hydrogenation) as well as hybridization (with Boron Nitride) on the in-plane strength as well as thermal conductivity.
Disclination theory is applied innovatively to the planar heterostructure with hybrid grains of graphene and hexagonal
boron nitride for the key factors affecting the overall strength. Graphene multilayers with ordered interlayer
characteristics are further constructed and analyzed. The coarse-grainedMD simulations are performed to analyze the
dynamic penetration process of LDM across a cell membrane. The evolutions of free energy as LDM piercing through
the cell membrane are calculated by the innovative application of thermodynamic integration in nano-biological
systems. The physical mechanisms of surface functionalization, stiffness and topological shapes on the penetrability of
LDM are revealed by analyzing the change of penetration barrier and mode, and bioimaging experiments are carried
out for verifications. Investigations about the principles and mechanisms of the mechanical properties and behavior
of LDM are critical to its functional design and biological control.
Biography
Yinfeng Li received his Ph.D. degree from Shanghai Jiao Tong University in 2014, and now serves as an associate professor there. He has focused on
the understanding of basic principles that control mechanical properties and behaviors of materials in both micro- and nano-scale. He has published
32 SCI indexed papers in high impact journals with more than 550 citations, including PNAS, JMPS, Carbon, Nanoscale, Acta Mater, etc. He has
been selected in Shanghai Chenguang talent project and awarded the prestigious 'IAAM Scientist Medal' by International Association of Advanced
Materials for notable and outstanding research in his field.
liyinfeng@sjtu.edu.cn