Iron–Gold Barcode Nanowires

Abstract

Stripped wires: Multifunctional (magnetic and optical) iron–gold barcode nanowires were electrochemically fabricated using nanoporous templates. Structural analysis by TEM elemental line scan and mapping (see images) clearly revealed the well‐separated, bamboo‐like nanostructures composed of Fe and Au strips.

One-pot synthesis and characterization of bifunctional Au–Fe3O4 hybrid core–shell nanoparticles

“…5 can be described satisfactorily by a Brillouin function or a modified form [26], suggestive of that the nanoparticles act like magnetic monodomains with single giant spins, in a way that is identical to that of atomic paramagnets except for the involvement of their extremely large moments and, thus, large susceptibilities. In addition, it is found in the curves that the Au-Fe 3 O 4 core-shell sample is easier to saturate than the pure Fe 3 O 4 nanoparticles, but harder than the Fe 3 O 4 -Au core-shell one, in which the susceptibility increases most rapidly [22][23][24] and a similar phenomenon was reported in Fe-Au barcode nanowires [29]. This finding is apparently related to the strong interfacial proximity effects and can have a direct impact on applications in such areas as biomedicine, where the higher susceptibility of the magnetic specimens boosts the performance of operation.…”

Hierarchical hollow microsphere and flower-like indium oxide: Controllable synthesis and application as H2S cataluminescence sensing materials

“…The synthetic technology of nanomaterials has got a great progress, and diverse morphologies of micro/nano-materials have been widely obtained via various methods [1][2][3][4][5]. It is worth mentioning here that during recent years hollow spherical nanostructures have been proposed for a wide range of applications, including chemical sensors, drug delivery as containers for encapsulation and microcapsule reactors due to their specific structures with low density, high specific surface area and good permeation [6,7].…”

Quantitative magnetometry analysis and structural characterization of multisegmented cobalt–nickel nanowires

“…Recently, most of the fundamental and applied research focused on magnetic materials have been directed towards the understanding and application of the astonishing magnetic properties found in nanostructures, which are quite different from those observed in the bulk systems and exhibit unique size and shape dependences. For these reasons, the nanoscale materials with designed features, such as barcode-like structures, are excellent candidates for a large variety of technological applications [4][5][6][7][8]. In this matter, a need of specialized characterization techniques to measure the magnetic behavior of individual nanostructures is required [9][10][11][12].…”