Two-dimensional (2D) molybdenum disulfide (MoS2) has been attracting rapidly increasing interest for application in chemoresistive gas sensors owing to its moderate band gap energy and high specific surface area. However, the mechanism of chemoresistive sensing via the adsorption and desorption of gas molecules and the influence of the shape of 2D materials are not well understood yet. Herein w...

We demonstrate atomic-layer-deposited (ALD) high-k dielectric integration on 2-D layer-structured molybdenum disulfide (MoS2) crystals and MoS2 dual-gate n-channel MOSFETs with ALD Al2O3 as the gate dielectric. Our C–V study of MOSFET structures shows good interface between 2-D MoS2 crystal and ALD Al2O3. Maximum drain currents using back gates and top gates are measured to be 7.07 and 6.42 mA/...

Bearings operating in ultra-low-temperature environments are commonly lubricated with solid lubricants. This study first focused on measuring the traction coefficients of molybdenum disulfide (MoS2) lubricant under various working conditions. Based this data, friction power consumption bearings was calculated and analyzed using a dynamic model. Additionally, experimental verification bearing ul...

We explore the use of Si3N4/Si substrates as a substitute of the standard SiO2/Si substrates employed nowadays to fabricate nanodevices based on 2D materials. We systematically study the visibility of several 2D semiconducting materials that are attracting a great deal of interest in nanoelectronics and optoelectronics: MoS2, MoSe2, WSe2 and black-phosphorus. We find that the use of Si3N4/Si su...

We report on experimental measurement of air damping effects in high frequency nanomembrane resonators made of atomically thin molybdenum disulfide (MoS2) drumhead structures. Circular MoS2 nanomembranes with thickness of monolayer, few-layer, and multi-layer up to 70 nm ( 100 layers) exhibit intriguing pressure dependence of resonance characteristics. In completely covered drumheads, where the...