Structuration and Integration of Magnetic Nanoparticles on Surfaces and Devices

Abstract

Different experimental approaches used for structuration of magnetic nanoparticles on surfaces are reviewed. Nanoparticles tend to organize on surfaces through self-assembly mechanisms controlled by non-covalent interactions which are modulated by their shape, size and morphology as well as by other external parameters such as the nature of the solvent or the capping layer. Further control on the structuration can be achieved by the use of external magnetic fields or other structuring techniques, mainly lithographic or atomic force microscopy (AFM)-based techniques. Moreover, results can be improved by chemical functionalization or the use of biological templates. Chemical functionalization of the nanoparticles and/or the surface ensures a proper stability as well as control of the formation of a (sub)monolayer. On the other hand, the use of biological templates facilitates the structuration of several families of nanoparticles, which otherwise may be difficult to form, simply by establishing the experimental conditions required for the structuration of the organic capsule. All these experimental efforts are directed ultimately to the integration of magnetic nanoparticles in sensors which constitute the future generation of hybrid magnetic devices.

Exploring Exchange Bias Coupling in Fe3−δO4@CoO Core–Shell Nanoparticle 2D Assemblies

“…In this context, it is very important to rationalize the study of exchange bias in FiM/AFM core–shell nanoparticles by addressing their spatial arrangement in well‐structured assemblies. An efficient approach to achieve this goal is to chemically assist the assembly of nanoparticles onto substrates in order to tune the interparticle distance and the dimensionality of the assemblies. Until now, the collective properties of FiM/AFM core–shell nanoparticles have been very scarcely investigated.…”

Additive nanomanufacturing – A review

“…154 This has proven to be an extremely useful tool for nanofabrication, with an extensive body of research investigating the various methods and applications of self-assembly. 154,155,156 Combining multiple methods of self-assembly has even succeeded in the creation of an operational 3D motor from a single polymer crystal. 157 Successive self-assembly processes allowed a crystal of R-hydroxyl-ω-thiolterminated polycaprolactone to be coated in three different types of nanoparticles: gold nanoparticles to facilitate optical visualisation; platinum nanoparticles to drive the motor by catalysing the decomposition of the surrounding hydrogen peroxide solution; and iron oxide nanoparticles to allow for remote magnetic guidance of the motor.…”

Facile and controllable one-step fabrication of molecularly imprinted polymer membrane by magnetic field directed self-assembly for electrochemical sensing of glutathione

“…magnetic field, electric field, pressure gradient, light and laser) [46,47]. Magnetic field directed self-assembly (MDSA), a recently emerged external self-assembly approach, has been more introduced as a powerful strategy for controlling the structure and properties of nanostructures and showed an excellent prospect for the fabrication of modified electrodes [48][49][50]. In our previous M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 6 studies, MDSA has been confirmed as an efficient, convenient and timesaving approach to construct the orderly and oriented geometric nanostructure, which enhanced charge transfer capability and showed desirable electrochemical properties [51,52].…”