99% RTS-like noise in gold nanoparticles μ-stripess

Grisolia, J.; Viallet, B.; Amiens, Catherine; Baster, S; Cordan, A. S.; Leroy, Y.; Soldano, Caterina; Brugger, Juergen; Ressier, Laurence

doi:10.1088/0957-4484/20/48/489801

Cited by 4 publications

(8 citation statements)

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“…Striped patterns parallel to the meniscus were previously obtained by convective assembly of polymer micrometer-sized colloids and, more recently, of nanometer-sized gold colloids. , Similar patterns have also been obtained by removal of a substrate through a Langmuir−Blodgett monolayer . The mechanism governing the formation of these Y -type wire arrays, parallel to the meniscus, is the “stick−slip” motion of the moving meniscus across a hydrophilic substrate. , Particles arrive toward the meniscus within the convective flux caused by evaporation in this region and are pinned to the substrate due to capillary forces and friction to the substrate.…”

Section: Resultsmentioning

confidence: 72%

“…Gold colloids were synthesized in aqueous phase by the standard citrate reduction (Turkevich method 41 ) as described in a previous work. 16 An average diameter of 18 nm with a standard deviation of 15% was determined by transmission electron microscopy. By the absorption spectra and Mie theory calculation, we determined the nanoparticle concentration of the colloidal suspension to be about 3 ϫ 10 12 /mL.…”

Section: Methodsmentioning

confidence: 99%

“…Gold colloids were synthesized in aqueous phase by the standard citrate reduction (Turkevich method) as described in a previous work . An average diameter of 18 nm with a standard deviation of 15% was determined by transmission electron microscopy.…”

Section: Methodsmentioning

confidence: 99%

“…11Ϫ15 However, the assembly of small metallic colloids (Ͻ20 nm) remains rather sparsely explored in CSA, with very few reports being available. 12,15,16 In order to direct and localize the assembly of colloids, CSA has been applied on chemically or topologically patterned surfaces. 17 AFM oxidation lithography or photolithography combined with chemical functionalization, 18,19 and microcontact printing 20 have been previously used to create hydrophilic/hydrophobic patterns, while other conventional lithographic techniques 21 have been used to create relief surface patterns.…”

mentioning

confidence: 99%

“…Convective self-assembly (CSA) is a colloidal assembly method based on particle flux toward the substrate−liquid−air contact line, caused by solvent evaporation in this area, and attractive capillary forces . CSA was employed for producing mono- or multilayer particle films from a large variety of colloidal micro- and nanoparticles. − However, the assembly of small metallic colloids (<20 nm) remains rather sparsely explored in CSA, with very few reports being available. ,, In order to direct and localize the assembly of colloids, CSA has been applied on chemically or topologically patterned surfaces . AFM oxidation lithography or photolithography combined with chemical functionalization, , and microcontact printing have been previously used to create hydrophilic/hydrophobic patterns, while other conventional lithographic techniques have been used to create relief surface patterns.…”

mentioning

confidence: 99%

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Tunable Conductive Nanoparticle Wire Arrays Fabricated by Convective Self-Assembly on Nonpatterned Substrates

et al. 2010

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Ordered arrays of centimeter-long nanoparticle wires are fabricated by convective self-assembly from aqueous suspensions of 18 nm gold colloids, on flat SiO(2)/Si substrates without any prepatterning. The orientation of the wires can be switched from parallel to perpendicular to the substrate-liquid-air contact line by controlling the substrate temperature. While the wires parallel to the meniscus are obtained by a stick-slip process, a mechanism based on critical density-triggered particle pinning is proposed to explain the formation of wires perpendicular to the meniscus. The geometry of the wire arrays is tuned by simply controlling the meniscus translation speed. Wires are typically characterized by widths of a few micrometers (1.8-8.2 µm), thicknesses of mono- to multilayers (18-70 nm), and spacings of few tens of micrometers. The fabricated nanoparticle wires are conductive, exhibiting a metallic resistive behavior in ambient conditions. Resistivity values of 5 × 10(-6) and 5 × 10(-2) Ωm are obtained on multilayer and monolayer nanoparticle wires, respectively. Such conductive nanoparticle wire arrays, fabricated by a simple and low-cost bottom-up strategy, offer opportunities for developing nanoparticle-based functional devices.

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Section: Resultsmentioning

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Tunable Conductive Nanoparticle Wire Arrays Fabricated by Convective Self-Assembly on Nonpatterned Substrates

et al. 2010

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Electron transport in gold colloidal nanoparticle-based strain gauges

Moreira¹,

Grisolia²,

Sangeetha³

et al. 2013

Nanotechnology

107

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A systematic approach for understanding the electron transport mechanisms in resistive strain gauges based on assemblies of gold colloidal nanoparticles (NPs) protected by organic ligands is described. The strain gauges were fabricated from parallel micrometer wide wires made of 14 nm gold (Au) colloidal NPs on polyethylene terephthalate substrates, elaborated by convective self-assembly. Electron transport in such devices occurs by inter-particle electron tunneling through the tunnel barrier imposed by the organic ligands protecting the NPs. This tunnel barrier was varied by changing the nature of organic ligands coating the nanoparticles: citrate (CIT), phosphines (BSPP, TDSP) and thiols (MPA, MUDA). Electro-mechanical tests indicate that only the gold NPs protected by phosphine and thiol ligands yield high gauge sensitivity. Temperature-dependent resistance measurements are explained using the 'regular island array model' that extracts transport parameters, i.e., the tunneling decay constant β and the Coulomb charging energy E(C). This reveals that the Au@CIT nanoparticle assemblies exhibit a behavior characteristic of a strong-coupling regime, whereas those of Au@BSPP, Au@TDSP, Au@MPA and Au@MUDA nanoparticles manifest a weak-coupling regime. A comparison of the parameters extracted from the two methods indicates that the most sensitive gauges in the weak-coupling regime feature the highest β. Moreover, the E(C) values of these 14 nm NPs cannot be neglected in determining the β values.

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Patterning gold nanoparticles in liquid environment with high ionic strength for local fabrication of up to 100μm long metallic interconnections

et al. 2015

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Metallic interconnections were fabricated in situ using the FluidFM as scanning probe lithography tool. In contrast to other SPL tools, the closed fluidic circuit of the FluidFM enables a pressure-controlled deposition of metallic nanoparticles in liquid environment. Taking advantage of the salt concentration of the liquid environment (i.e. the ionic strength) to tailor the resulting particle density in the deposited layer, a protocol was established for direct patterning of conductive interconnecting structures. The FluidFM microchannel was filled with an aqueous solution of negatively charged gold nanoparticles (AuNPs) to be delivered onto a glass surface coated with a polycation favoring electrostatic adhesion. The deposited structures were analyzed both topographically and electrically to optimize the external parameters such as contact time, salt concentration of the liquid environment and size of the AuNPs. Using this optimized protocol we succeeded in the local fabrication of conductive metallic wires between two prefabricated macroelectrodes in liquid environment. In a subsequent step, the conductivity of the deposited structure was improved by gold annealing.

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99% RTS-like noise in gold nanoparticles μ-stripess

Abstract: The full text of this article is available in the pdf provided.

Cited by 4 publications

References 0 publications

Tunable Conductive Nanoparticle Wire Arrays Fabricated by Convective Self-Assembly on Nonpatterned Substrates

Tunable Conductive Nanoparticle Wire Arrays Fabricated by Convective Self-Assembly on Nonpatterned Substrates

Electron transport in gold colloidal nanoparticle-based strain gauges

Patterning gold nanoparticles in liquid environment with high ionic strength for local fabrication of up to 100μm long metallic interconnections

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