An electrospun polymer composite with fullerene-multiwalled carbon nanotube exohedral complexes can act as memory device

Molinari, Fabricio N.; Barragán, Edwin; Bilbao, Emanuel; Patrone, L.; Giménez, Gustavo; Medrano, Anahí V.; Tolley, A.; Monsalve, Leandro N.

doi:10.1016/j.polymer.2020.122380

Cited by 13 publications

(3 citation statements)

References 59 publications

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“…Kim developed a carbon nanotube RRAM with basic dynamic logic, learning and memory functions for biological synapses [ 36 ]. Molinari used a nanocomposite of polycaprolactone, multiwalled carbon nanotubes, and fullerene C 60 as a memristor layer to create a one-write-multiread memory device, and the resistance of the device can be modulated by applying different programming voltages and programming times [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

Tunable Multilevel Data Storage Bioresistive Random Access Memory Device Based on Egg Albumen and Carbon Nanotubes

2021

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In this paper, a tuneable multilevel data storage bioresistive memory device is prepared from a composite of multiwalled carbon nanotubes (MWCNTs) and egg albumen (EA). By changing the concentration of MWCNTs incorporated into the egg albumen film, the switching current ratio of aluminium/egg albumen:multiwalled carbon nanotubes/indium tin oxide (Al/EA:MWCNT/ITO) for resistive random access memory increases as the concentration of MWCNTs decreases. The device can achieve continuous bipolar switching that is repeated 100 times per cell with stable resistance for 104 s and a clear storage window under 2.5 × 104 continuous pulses. Changing the current limit of the device to obtain low-state resistance values of different states achieves multivalue storage. The mechanism of conduction can be explained by the oxygen vacancies and the smaller number of iron atoms that are working together to form and fracture conductive filaments. The device is nonvolatile and stable for use in rewritable memory due to the adjustable switch ratio, adjustable voltage, and nanometre size, and it can be integrated into circuits with different power consumption requirements. Therefore, it has broad application prospects in the fields of data storage and neural networks.

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Section: Introductionmentioning

confidence: 99%

Tunable Multilevel Data Storage Bioresistive Random Access Memory Device Based on Egg Albumen and Carbon Nanotubes

2021

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“…Figure 15h depicts the current value that corresponds to the applied voltage value based on whether the following "write" or "erase" operation is performed, demonstrating the simple memory behavior. Furthermore, novel conductive polymer aligned nanofibers made of electrospun polycaprolactone (PCL) with a complex made of multiwalled carbon nanotubes (MCNT) and fullerene C 60 (Figure 15i) displayed electrical switching behavior due to charge buildup of fullerene C 60 based on electrical stimulation [110]. These conveniently prepared nanocomposites on interdigitated coplanar electrodes could be applied to write-once-read-many memory devices (WORM), which is one type of non-volatile memory device.…”

Section: Applications Of Electrospinning In Memory: Storage Electronicsmentioning

confidence: 99%

Electrospun Nanofibers for Integrated Sensing, Storage, and Computing Applications

et al. 2022

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Electrospun nanofibers have become the most promising building blocks for future high-performance electronic devices because of the advantages of larger specific surface area, higher porosity, more flexibility, and stronger mechanical strength over conventional film-based materials. Moreover, along with the properties of ease of fabrication and cost-effectiveness, a broad range of applications based on nanomaterials by electrospinning have sprung up. In this review, we aim to summarize basic principles, influence factors, and advanced methods of electrospinning to produce hundreds of nanofibers with different structures and arrangements. In addition, electrospun nanofiber based electronics composed of both two-terminal and three-terminal devices and their practical applications are discussed in the fields of sensing, storage, and computing, which give rise to the further integration to realize a comprehensive and brain-like system. Last but not least, the emulation of biological synapses through artificial synaptic transistors and additionally optoelectronics in recent years are included as an important step toward the construction of large-scale, multifunctional systems.

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“…These supramolecular crystals were small (hundreds of micrometers long) and soft (hardness comparable to that of indium), with a typically unaligned crystal orientation when gathered to a larger morphology (see refs and for exceptions for fullerene crystal assemblies with microstructure alignment, though those were not self-supporting), which hindered development of robust fullerene-based wires. While fullerene supramolecular crystals have been incorporated with CNT networks before, − and even inside individual CNTs, they have not been incorporated with high-performance CNT fiber where the CNTs are themselves aligned. Further, assemblies of fullerene supramolecular crystals themselves in any self-supporting bulk morphology have not had a preferred orientation.…”

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confidence: 99%

Self-Assembly of Uniaxial Fullerene Supramolecules Aligned within Carbon Nanotube Fibers

et al. 2023

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The conductivity and strength of carbon nanotube (CNT) wires currently rival those of existing engineering materials; fullerene-based materials have not progressed similarly, despite their exciting transport properties such as superconductivity. This communication reveals a new mechanically robust wire of mutually aligned fullerene supramolecules self-assembled between CNT bundles, where the fullerene supramolecular internal crystal structure and outer surface are aligned and dispersed with the CNT bundles. The crystallinity, crystal dimensions, and other structural features of the fullerene supramolecular network are impacted by a number of important production processes such as fullerene concentration and postprocess annealing. The crystal spacing of the CNTs and fullerenes is not altered, suggesting that they are not exerting significant internal pressure on each other. In low concentrations, the addition of networked fullerenes makes the CNT wire mechanically stronger. More importantly, novel mutually aligned and networked fullerene supramolecules are now in a bulk self-supporting architecture.

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An electrospun polymer composite with fullerene-multiwalled carbon nanotube exohedral complexes can act as memory device

Cited by 13 publications

References 59 publications

Tunable Multilevel Data Storage Bioresistive Random Access Memory Device Based on Egg Albumen and Carbon Nanotubes

Tunable Multilevel Data Storage Bioresistive Random Access Memory Device Based on Egg Albumen and Carbon Nanotubes

Electrospun Nanofibers for Integrated Sensing, Storage, and Computing Applications

Self-Assembly of Uniaxial Fullerene Supramolecules Aligned within Carbon Nanotube Fibers

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