Metal/metal-oxide thin layer heterostructure by laser treatment for memristor application

Ghasemi, R.; Jamilpanah, L.; Shafei, M.; Khademi, Iman; Mohseni, S.M.; Tehranchi, M.M.

doi:10.1016/j.matlet.2019.127094

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…The presence of Fe 3 O 4 nanoclusters, in addition to enriching the surface of Gr layers with metal ions, also increases its interaction in the LC medium. At sufficiently low frequencies, different redistributions of oxygen vacancies and defects in these nanoclusters in response to the applied electric field lead to the formation of nano-conductive areas on the surface of Gr layers which facilitate the charge transfer 47 , 62 , 63 . These effects are particularly pronounced at the edges of Gr layers, which tend to accumulate more charged species.…”

Section: Resultsmentioning

confidence: 99%

Enhancement in electrical conductivity of liquid crystals by graphene metal oxide composites

Khodaee

Dalir

Feghhi

et al. 2023

Sci Rep

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Enhancing the electrical conductivity of liquid crystal (LC) circumvents challenges for application in advanced electronic components. Toward this, using additives made of different nanostructures that could result in functional LCs is suggested. In this paper, various concentrations of graphene (Gr)/metal-oxide (Fe3O4) nanocomposite (GMN) (0.0001–1 w%) were added to E7 nematic LC. We found that the role of anisotropic Gr flakes, their edges as well as surface-decorated-metal-oxide-additives have significant impact on electrical properties of E7. A range of appropriate additives of such a nanocomposite enhances the electrical conductivity of LCs. This effect can be traced through the decrease in the formation of GMN aggregates in the E7 and increase in the electrostatic field at the edges of the Gr sheets. Moreover, the presence of metal-oxide nanoclusters due to the presence of oxygen vacancies and defects facilitates the construction of conductive network for improving the charge transfer pathways and contributes to a stronger interaction of the Gr surface with charged species. These factors can provide Gr layers as dipole moments and lead to signal propagation in the dielectric medium. Our finding conveys a pathway toward significant enhancement of electrical conductivity in the LC family which can be useful for functional applications.

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Section: Resultsmentioning

confidence: 99%

Enhancement in electrical conductivity of liquid crystals by graphene metal oxide composites

Khodaee

Dalir

Feghhi

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The presence of Fe 3 O 4 nanoclusters, in addition to enriching the surface of Gr layers with metal ions, also increases its interaction in the LC medium. At su ciently low frequencies, different redistributions of oxygen vacancies and defects in these nanoclusters in response to the applied electric eld lead to the formation of nanoconductive areas on the surface of Gr layers which facilitate the charge transfer 44,59,60 . These effects are particularly pronounced at the edges of Gr layers, which tend to accumulate more charged species.…”

Section: Resultsmentioning

confidence: 99%

Enhancement in ionic conductivity of liquid crystals by graphene/metal-oxide-nanocomposite

Khodaee

Dalir

Feghhi

et al. 2023

Preprint

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Enhancing the ionic conductivity of liquid crystal (LC) circumvents challenges for application in advanced electronic components. Toward this, using additives made of different nanostructures that could result in functional LCs is suggested. In this paper, various concentrations of graphene (Gr)/metal-oxide (Fe3O4) nanocomposite (GMN) (0.0001-1 w%) were added to E7 nematic LC. We found that the role of anisotropic Gr flakes, their edges as well as surface-decorated-metal-oxide-additives have significant impact on electrical properties of E7. A range of appropriate additives of such a nanocomposite enhances the electrical conductivity of LCs. This effect can be traced through the decrease in the formation of GMN aggregates in the E7 and increase in the electrostatic field at the edges of the Gr sheets. Moreover, the presence of metal-oxide nanoclusters due to the presence of oxygen vacancies and defects facilitates the construction of conductive network for improving the charge transfer pathways and contributes to a stronger interaction of the Gr surface with charged species. These factors can provide Gr layers as dipole moments and lead to signal propagation in the dielectric medium. Our finding conveys a pathway toward significant enhancement of ionic conductivity in the LC family which can be useful for functional applications.

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“…[95] Ghasemi et al proposed a new method for the production of metal/metal oxide (Ni 80 Fe 20 ) thin film heterostructures by laser radiation (354 nm pulsed laser) and investigated its memristor properties (Figures 4h). [96] This technology enables the future to manufacture various types of electrical components on demand.…”

Section: Laser Thinning/irradiationmentioning

confidence: 99%

Two‐Dimensional Oxide Crystals for Device Applications: Challenges and Opportunities

Feng

Cheng²,

Yin

et al. 2023

Advanced Materials

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Atomically thin two‐dimensional (2D) oxide crystals have garnered considerable attention because of their remarkable physical properties and potential for versatile applications. In recent years, significant advancements have been made in the design, preparation, and application of ultrathin 2D oxides, providing many opportunities for new‐generation advanced technologies. This review focuses on the controllable preparation of 2D oxide crystals and their applications in electronic and optoelectronic devices. Based on their bonding nature, we first summarize the various types of 2D oxide crystals, including both layered and nonlayered crystals, as well as their current top‐down and bottom‐up synthetic approaches. Subsequently, in terms of the unique physical and electrical properties of 2D oxides, we emphasize recent advances in device applications, including photodetectors, field‐effect transistors, dielectric layers, magnetic and ferroelectric devices, memories, and gas sensors. Finally, conclusions and future prospects of 2D oxide crystals are presented. We hope that this review will provide comprehensive and insightful guidance for the development of 2D oxide crystals and their device applications.This article is protected by copyright. All rights reserved

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Metal/metal-oxide thin layer heterostructure by laser treatment for memristor application

Cited by 8 publications

References 9 publications

Enhancement in electrical conductivity of liquid crystals by graphene metal oxide composites

Enhancement in electrical conductivity of liquid crystals by graphene metal oxide composites

Enhancement in ionic conductivity of liquid crystals by graphene/metal-oxide-nanocomposite

Two‐Dimensional Oxide Crystals for Device Applications: Challenges and Opportunities

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