2018_EJRNL_PP_ZHAOHE_DAI_1.pdf
Terbatas  Ratnasari
» Gedung UPT Perpustakaan
Terbatas  Ratnasari
» Gedung UPT Perpustakaan
Nanoblisters such as nanobubbles and nanotents formed by two-dimensional (2D) materials have been
extensively exploited for strain engineering purposes as they can produce self-sustained, nonuniform inplane
strains through out-of-plane deformation. However, deterministic measure and control of strain fields
in these systems are challenging because of the atomic thinness and unconventional interface behaviors of
2D materials. Here, we experimentally characterize a simple and unified power law for the profiles of a
variety of nanobubbles and nanotents formed by 2D materials such as graphene and MoS2 layers. Using
membrane theory, we analytically unveil what sets the in-plane strains of these blisters regarding their
shape and interface characteristics. Our analytical solutions are validated by Raman spectroscopy measured
strain distributions in bulged graphene bubbles supported by strong and weak shear interfaces.We advocate
that both the strain magnitudes and distributions can be tuned by 2D material-substrate interface adhesion
and friction properties.