Large 2D monolayer assemblies of iron oxide nanocrystals by the Langmuir–Blodgett technique

Pauly, Matthias; Pichon, Benoît P.; Demortière, Arnaud; Delahaye, Julie; Leuvrey, Cédric; Pourroy, G.; Bégin‐Colin, Sylvie

doi:10.1016/j.spmi.2008.11.004

Cited by 33 publications

(48 citation statements)

References 39 publications

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“…Distribution ρ e (z) is obtained by fitting the model XRR curves with GenX reflectivity tool [28]. Experimental It is well-known that monolayers of iron oxide MNPs tend to form a two-dimensional hexagonal close-packed (hcp) superlattice [10,11,[15][16][17][18][19].…”

Section: Resultsmentioning

confidence: 99%

X-ray scattering characterization of iron oxide nanoparticles Langmuir film on water surface and on a solid substrate

Ukleev¹,

Khassanov

Konovalov

et al. 2016

Thin Solid Films

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In the present study we compare a structure of a Langmuir film assembled from magnetic iron oxide nanoparticles on water surface and a structure of the same film after its transfer to a solid substrate by the Langmuir-Schaefer method. In contrast to most of related studies, where different techniques are used to characterize the films before and after the deposition, we use the same combination of X-ray reflectometry and Grazing Incidence Small-Angle X-ray scattering. In both cases -on a liquid and on a solid substratethe film was identified as a well-ordered monolayer of the nanoparticles laterally organized in a two-dimensional hexagonal lattice.However parameters of the lattice were found to be slightly different depending on the type of the substrate. It is also demonstrated that Langmuir-Schaefer technique is the right way for deposition of such kind of the particles on a solid substrate.

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Section: Resultsmentioning

confidence: 99%

X-ray scattering characterization of iron oxide nanoparticles Langmuir film on water surface and on a solid substrate

Ukleev¹,

Khassanov

Konovalov

et al. 2016

Thin Solid Films

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“…A possible route to reconcile the molecular scale (below 1 nm) and the top-down nanofabrication route (larger than 10 nm) is to use a multi-scale approach, where a cluster (metallic, semi metallic or semiconductor) of typical 10 nm size [12] or a conducting microsphere, of typical 10 2 -10 3 nm size, are used as an intermediate bridge. One can also take advantage of bottom-up fabrication methods for incorporating macroscopic amounts of identical molecules into devices, or to assemble well organized monolayers of nanoparticles [13][14][15]. Key advantages are simplicity, ability to cover large areas, and cheap manufacturing costs.…”

Section: Introductionmentioning

confidence: 99%

Nanotrench for nano and microparticle electrical interconnects

et al. 2010

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We present a simple and versatile patterning procedure for the reliable and reproducible fabrication of high aspect ratio (10(4)) electrical interconnects that have separation distances down to 20 nm and lengths of several hundreds of microns. The process uses standard optical lithography techniques and allows parallel processing of many junctions, making it easily scalable and industrially relevant. We demonstrate the suitability of these nanotrenches as electrical interconnects for addressing micro and nanoparticles by realizing several circuits with integrated species. Furthermore, low impedance metal-metal low contacts are shown to be obtained when trapping a single metal-coated microsphere in the gap, emphasizing the intrinsic good electrical conductivity of the interconnects, even though a wet process is used. Highly resistive magnetite-based nanoparticles networks also demonstrate the advantage of the high aspect ratio of the nanotrenches for providing access to electrical properties of highly resistive materials, with leakage current levels below 1 pA.

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“…12 nmsized iron oxide NPs which crystallize in the spinel structure were produced by the thermal decomposition method [15] and following the exact procedure we reported previously [16,17]. The preparation of an iron(III)/oleate complex (Fe(oleate) 3 ) which is thermally decomposed in a high boiling solvent in the presence of oleic acid was performed following the exact procedure we reported previously [22].…”

Section: Methodsmentioning

confidence: 99%

“…The obtained nanocrystals could be easily suspended in various organic solvents to raise a highly stable suspension which can be stored for several months. The size monodispersity of NPs was improved by applying a size selection precipitation process [17]. The nanoparticles were suspended in hexane at a concentration of 1 mg/mL and precipitated by adding the same volume of acetone followed by centrifugation.…”

Section: Methodsmentioning

confidence: 99%

Assembling of Magnetic Iron Oxide Nanoparticles Controlled by Self- Assembled Monolayers of Functional Coordinating or Chelating Trialkoxysilanes

Pichon¹

2012

TOSURSJ

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Magnetic nanoparticles (NPs) have been assembled in films by using self-assembled monolayers (SAMs) of organic molecules. SAMs were prepared by the reaction of organotrialkoxysilanes with surface silanol groups of silicon wafers. SAMs were prepared and their surface was decorated either by amine or thymine groups which have the ability to immobilize iron oxide nanoparticles as monolayers. These groups have different coordinating and chelating abilities and influence the kinetic of the assembling reaction. Finally, the magnetic properties of the assemblies of NPs were studied.

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Large 2D monolayer assemblies of iron oxide nanocrystals by the Langmuir–Blodgett technique

Cited by 33 publications

References 39 publications

X-ray scattering characterization of iron oxide nanoparticles Langmuir film on water surface and on a solid substrate

X-ray scattering characterization of iron oxide nanoparticles Langmuir film on water surface and on a solid substrate

Nanotrench for nano and microparticle electrical interconnects

Assembling of Magnetic Iron Oxide Nanoparticles Controlled by Self- Assembled Monolayers of Functional Coordinating or Chelating Trialkoxysilanes

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