Scalable processes for fabricating non-volatile memory devices using self-assembled 2D arrays of gold nanoparticles as charge storage nodes

Muralidharan, Girish; Bhat, Navakanta; Santhanam, Venugopal

doi:10.1039/c1nr10884k

Cited by 14 publications

(12 citation statements)

References 56 publications

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“…Eah reported the fabrication of 2D highly hcp AuNP monolayer in millimeter‐scale by simple self‐assembly of drying water and toluene droplets with AuNPs at the air‐liquid interface . Muralidharan and co‐workers reported the self‐assembly of AuNP arrays by drop‐casting a colloidal solution on an air‐water interface and then applied such Au monolayer as charge storage nodes to fabricate nonvolatile memory devices . Sashuk and co‐workers reported the fabrication of close‐packed monolayers of charged Janus‐type noble‐metal NPs self‐assembled at the air‐water interface .…”

Section: Self‐assembly Of Nanoparticle At the Air‐liquid Interfacementioning

confidence: 99%

“…[61] Muralidharan and co-workers reported the selfassembly of AuNP arrays by drop-casting a colloidal solution on an air-water interface and then applied such Au monolayer as charge storage nodes to fabricate nonvolatile memory devices. [62] Sashuk and co-workers reported the fabrication of close-packed monolayers of charged Janus-type noble-metal NPs self-assembled at the air-water interface. [63] Moreover, Sashuk et al also reported the dynamic self-assembly of a dense monolayer of charged AuNPs with several square centimeters in response to the surface tension gradient.…”

Section: Metal Npsmentioning

confidence: 99%

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Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

et al. 2019

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The large‐scale fabrication of two‐dimensional periodic nanostructures in high quality holds great promises for building novel nanoscale devices. They have been conventionally produced using interface‐mediated self‐assembly strategies such as the Langmuir‐Blodgett and oil‐water interfacial assembly methods, which however are limited by the stringent requirements for the hydrophilicity/hydrophobicity of the particle surface. In this article, we review the recent progress on the air‐liquid interfacial self‐assembly to demonstrate that such strategies are simple, inexpensive, effective, scalable, and versatile in the fabrication of two‐dimensional periodic nanostructured arrays. They can be successfully employed to assemble nanoparticles of various compositions and surface properties into periodic nanostructured monolayer films, which find many important applications, for example, in the construction of colorimetric sensors for gas, chemical, and biomedical detection.

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Section: Self‐assembly Of Nanoparticle At the Air‐liquid Interfacementioning

confidence: 99%

Section: Metal Npsmentioning

confidence: 99%

Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

et al. 2019

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“…nanoparticles, nanowires/nanotubes, nanoscale films, have been widely studied. Noble metal nanoparticles are the foremost contenders amongst nanomaterials that already have a significant market presence [1], a presence that is more likely to expand as several technologies such as drug delivery [2], nanoelectronics [3], etc. mature in the near future.…”

Section: Introductionmentioning

confidence: 99%

Scalable Synthesis of Noble Metal Nanoparticles

Santhanam

2015

Springer Tracts in Mechanical Engineering

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Noble metal nanoparticles possess unique size-dependent electronic and optical characteristics and are one of the foremost 'building blocks' for nanostructured device fabrication. As such, there is considerable interest in developing continuous-flow processes for large-scale synthesis of noble metal nanoparticles. In this chapter, we describe the results of our work aimed at understanding key process variables that determine particle size distribution in two popular protocols used for lab-scale synthesis of gold and silver colloids. Our understanding of the importance of aggregation and role of the pH of precursor solutions in determining the kinetics and stability of colloidal sols enabled us to propose suitable modifications in process conditions that enabled scalable synthesis of gold and silver nanoparticles. These insights also led to the development of a novel route for low-cost fabrication of silver nanostructures on paper using an inkjet printer.

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“…15 We aimed to achieve a nanostructured hybrid metal oxide to improve its physical and chemical properties through creating a hollow structure with hierarchical nanostructures, by ion transfer across different solid-solid interfaces in a calcination process. 21,22 However, to the best of our knowledge, there have been no reports on the influence of Gd ion addition on the morphology, size and phase of Mn 3 O 4 nanostructures so far. A thermal decomposition method would be preferable to obtain a void structure by the removal of moisture and gaseous impurities.…”

Section: Introductionmentioning

confidence: 99%

Manganese sesquioxide to trimanganese tetroxide hierarchical hollow nanostructures: effect of gadolinium on structural, thermal, optical and magnetic properties

et al. 2015

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Various hollow manganese oxide (bixbyite Mn 2 O 3 and hausmannite Mn 3 O 4 ) nanoparticles (NPs) with different morphologies were obtained from a single precursor, manganese oxalate ĲMnC 2 O 4 ). To synthesize a Mn 3 O 4 stacked nanostructure rather than coral-like Mn 2 O 3 nanospheres, as synthesized MnC 2 O 4 was thermally decomposed at 700°C in the presence of Gd 3+ , through the oriented arrangement mechanism. The formation process and structural variation arising from varying the thermal treatment (450°C and 700°C) and the cationic dopant Gd 3+ were analyzed by FTIR, TGA, and XRD. The unexpected size reduction, and significant physicochemical properties were analyzed using various techniques such as FESEM coupled with EDAX, HR-TEM, DRS-UV-vis, EPR, EIS and VSM. The addition of gadolinium induces particle size reduction and a phase transition from cubic Mn 2 O 3 to tetragonal Mn 3 O 4 , which leads to the suppression of the electrical conductivity, and changes in the optical band gap. The prepared Mn 3 O 4 nanocrystals exhibit ferromagnetic behavior below T c ≈ 45 K and weak paramagnetic behavior at room temperature.

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Scalable processes for fabricating non-volatile memory devices using self-assembled 2D arrays of gold nanoparticles as charge storage nodes

Abstract: We propose robust and scalable processes for the fabrication of floating gate devices using ordered arrays of 7 nm size gold nanoparticles as charge storage nodes. The proposed strategy can be readily adapted for fabricating next generation (sub-20 nm node) non-volatile memory devices.

Cited by 14 publications

References 56 publications

Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

Scalable Synthesis of Noble Metal Nanoparticles

Manganese sesquioxide to trimanganese tetroxide hierarchical hollow nanostructures: effect of gadolinium on structural, thermal, optical and magnetic properties

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