Mechanical properties of freely suspended semiconducting graphene-like layers based on MoS2

作者：Castellanos Gomez Andres^*; Poot Menno; Steele Gary A; van der Zant Herre S J; Agrait Nicolas; Rubio Bollinger Gabino

来源：Nanoscale Research Letters, 2012, 7: 1-4.

DOI：10.1186/1556-276X-7-233

• Molybdenum disulfide nanosheets
• Freely suspended
• Mechanical properties
• Atomically thin crystal
• Mechanical exfoliation

We fabricate freely suspended nanosheets of molybdenum disulphide (MoS2) which are characterized by quantitative optical microscopy and high-resolution friction force microscopy. We study the elastic deformation of freely suspended nanosheets of MoS2 using an atomic force microscope. The Young%26apos;s modulus and the initial pre-tension of the nanosheets are determined by performing a nanoscopic version of a bending test experiment. MoS2 sheets show high elasticity and an extremely high Young%26apos;s modulus (0.30 TPa, 50% larger than steel). These results make them a potential alternative to graphene in applications requiring flexible semiconductor materials. %26lt;br%26gt;PACS, 73.61.Le, other inorganic semiconductors, 68.65.Ac, multilayers, 62.20.de, elastic moduli, 81.40.Jj, elasticity and anelasticity, stress-strain relations.

• 出版日期2012-4-25