A Molecular-Rotor Device for Nonvolatile High-Density Memory Applications

Abstract

Abstract-A novel memory device based on an electrically driven molecular rotor was fabricated and demonstrated to have bistable switching effects. The device showed an on/off ratio of approximately 10 4 , a read window of about 2.5 V, and retention performance of greater than 10 4 s. The analysis of the device I-V characteristics suggests the source of the observed switching effects to be the redox-induced ligand rotation around the copper metal center, which is consistent with the observed temperature dependence of the switching behavior. This organic monolayer device holds a potential for nonvolatile high-density memory applications due to its scalability and reduced cost.

Molecular Dynamics Study of Crystalline Molecular Gyroscopes

“…Molecular machines and rotors are important functional components in all living organisms, playing critical roles in processes such as muscle contraction, cell division, motility, supporting cellular metabolism, vesicle and neuronal transport, as well as signaling and energy processing in cellular membranes. − High efficiency, flexibility, and robustness of biological nanomachines have stimulated significant experimental efforts to develop artificial molecular devices with potentially wide applications in nanotechnology, material science, and medicine. − Although many synthetic successes in this area have been reported, direct application of molecular motors and rotors in technology is still far away from the practical realization mainly because fundamental mechanisms of functioning of such systems are not well understood yet …”

Improving the leakage current of polyimide-based resistive memory by tuning the molecular chain stack of the polyimide film

“…[7][8][9][10] Numerous materials have been developed for use as the resistive layer in ReRAM. [11][12][13] Among them, polymer materials are strong resistive layer candidates owing to their thermal stability, chemical resistance, mechanical strength, flexibility, and simple production process. [14][15][16][17] Polyimide (PI), for example, is an interesting and simple material for many applications and has been wildly applied in, for example, organic thin film transistors (OTFTs), 18,19) organic light-emitting diodes (OLEDs), 20,21) and organic solar cells, 22,23) as the alignment film in liquid crystal display (LCD) panels.…”