TY - JOUR
T1 - Elastic Properties of Few Nanometers Thick Polycrystalline MoS2 Membranes: A Nondestructive Study
AU - Graczykowski, B.
AU - Sledzinska, M.
AU - Placidi, M.
AU - Saleta Reig, D.
AU - Kasprzak, M.
AU - Alzina, F.
AU - Sotomayor Torres, C. M.
PY - 2017/12/13
Y1 - 2017/12/13
N2 - © 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.
AB - © 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.
KW - Molybdenum disulfide
KW - elastic properties
KW - micro-Brillouin light scattering
KW - ultrathin membranes
U2 - 10.1021/acs.nanolett.7b03669
DO - 10.1021/acs.nanolett.7b03669
M3 - Article
VL - 17
SP - 7647
EP - 7651
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 12
ER -