Electromechanical Switch Based on Mo₆S₆ Nanowires

Abstract

We investigate the structural, electronic, and transport properties of mechanically deformed Mo6S6 nanowires using a density-functional based tight binding method extended with a Green's functions formalism. We present two interesting results: first, the properties of the wire are not affected by bending, and second, a metal-insulator transition occurs when the wire is twisted. This indicates that molybdenum sulfide nanowires can be used as a nanocable to flexibly transfer information between electromechanical switches, which can be also constructed from the same wires. Hence, our results suggest the Mo6S6 nanowires as unique building blocks for future nanodevices.

Atomic and electronic properties of quasi-one-dimensional MoS2 nanowires

“…Molybdenum disulfide (MoS 2 ) has been one of the most important catalysts used in refineries worldwide for HDS over the past century. Within the last decade, and with the advent of nanotechnology, there has been a renewed interest in this material, and more specifically in MoS 2 nanostructures like triangular nanoclusters [4–10] nanoparticles [11, 12], nanotubes [13–16], nanowires [17–21], nanoribbons [22–29] and nanoplatelets [30–35]. The reason is twofold: First, such nanostructures have intriguing electronic properties, intrinsically associated with their low dimensionality and the resulting electronic confinement.…”

“…Second, these novel properties, together with the large surface-to-volume ratio, suggest their use as nanocatalysts with improved efficiency. In the last decade, the properties of the MoS 2 active surface and low-dimensional MoS 2 nanostructures have been intensively studied [2–8, 13, 21, 36, 37]. One of the most challenging goals is to establish a direct relationship between the structural properties and the catalytic activity.…”

Quantum Simulations of One-Dimensional Nanostructures under Arbitrary Deformations

“…Combination of deformations creates synergy that causes non-linear response in the electronic structure and invalidates linear superposition. For (8,4) CNT the validity of Eq. (9) was regained by decreasing 0 down to 2 % (not shown), but the limits of validity could not be anticipated from CNT electromechanics under separate pure deformations; confirmation of possible validity required explicit simulations with arbitrary deformations.…”

“…(9) (Fig.2c). In (8,4) CNT pure stretching increases the gap (inset of Fig.2c), but the stretching of already bent-and-twisted tube decreases the gap. Combination of deformations creates synergy that causes non-linear response in the electronic structure and invalidates linear superposition.…”

Individual nanowire handling for NEMS fabrication

“…For these reasons, nanowires and nanotubes are discussed as crucial parts in novel sensors, actuators, and ICs based on these structures. All application fields of sensors are a possible field implementations: pressure, flow, chemistry,temperature, biosensors, strains, antennas, and resonators [3], [4], [5], [6], [7], [8].…”