Micro- and nanoporous materials produced using accelerated heavy ion beams

Apel, P.Yu.; Дмитриев, С. Н.

doi:10.1088/2043-6262/2/1/013002

Cited by 39 publications

(34 citation statements)

References 39 publications

(55 reference statements)

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“…As a template, we used lab-made ion-track etched polycarbonate membranes with an average pore diameter around 300 nm and length 30 microns (note that commercial membranes are also readily available). The track formation and track etching process is explained in literature [35]. For the synthesis of CoNiB and NiFeB nanotubes a 30 µm-thick polycarbonate (PC) foil (Pokalon from LOFO, High Tech Film GmbH) was irradiated with Au 26+ ions (fluence: 10 7 ions/cm 2 ; kinetic energy of the projectile: 11.4 MeV per nucleon) at the GSI Helmholtzzentrum für Schwerionenforschung GmbH (Darmstadt).…”

Section: A3 Template Preparationmentioning

confidence: 99%

Flux-closure domains in high aspect ratio electroless-deposited CoNiB nanotubes

et al. 2018

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We report the imaging of magnetic domains in ferromagnetic CoNiB nanotubes with very long aspect ratio, fabricated by electroless plating. While axial magnetization is expected for long tubes made of soft magnetic materials, we evidence series of azimuthal domains. We tentatively explain these by the interplay of anisotropic strain and/or grain size, with magneto-elasticity and/or anisotropic interfacial magnetic anisotropy. This material could be interesting for dense data storage, as well as curvature-induced magnetic phenomena such as the nonreciprocity of spin-wave propagation.

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Section: A3 Template Preparationmentioning

confidence: 99%

Flux-closure domains in high aspect ratio electroless-deposited CoNiB nanotubes

et al. 2018

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“…Owing to the pronounced chemical transformation of the polymerc lose to the ion trajectories it is possible to selectively etch out the damaged material, causing the formation of channel-shaped pores. [29] If the ion irradiation is applied from different directions, polymer templates can be createdw hich contain networks of crossingc hannels, whose diameter,o rientation, density,and interconnection can be adjusted by changing the irradiation and etching conditions. [27] These pore networks define the structure of the final NT networks.…”

Section: Introductionmentioning

confidence: 99%

Self‐Supporting Metal Nanotube Networks Obtained by Highly Conformal Electroless Plating

et al. 2015

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We present a versatile approach for the fabrication of well‐defined networks of interconnected metal nanotubes, which applies electroless plating to ion‐track‐etched polymer templates that enclose designed pore networks. In order to obtain self‐supporting structures, the deposition reactions must be optimized to yield conformal nanoscale metal films on microstructured substrates possessing extensive inner surfaces. Using this route, gold, copper, silver, nickel, and platinum nanotube networks are synthesized. The resulting structures can be handled macroscopically and combine a large surface area with continuous mass transport and conduction pathways, rendering them promising for application in, for example, electrocatalysis and sensing. This potential is demonstrated by employing a gold nanotube network for the amperometric detection of hydrogen peroxide, in which excellent sensitivity, catalyst utilization, and stability is achieved.

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“…However, these templates offer limited geometry dictated by the membrane pores, so one cannot tailor the geometry of the wires. Alternatively, one can fabricate a porous template through ion track etching [59,60], where a porous polycarbonate foil is bombarded with high energy ions and then these tracks are selectively etched in a strong base. However, the drawback with this method is again limited control over the geometry and pore surface roughness.…”

Section: Tpl and Electrodepositionmentioning

confidence: 99%

Harnessing Multi-Photon Absorption to Produce Three-Dimensional Magnetic Structures at the Nanoscale

et al. 2020

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Three-dimensional nanostructured magnetic materials have recently been the topic of intense interest since they provide access to a host of new physical phenomena. Examples include new spin textures that exhibit topological protection, magnetochiral effects and novel ultrafast magnetic phenomena such as the spin-Cherenkov effect. Two-photon lithography is a powerful methodology that is capable of realising 3D polymer nanostructures on the scale of 100 nm. Combining this with postprocessing and deposition methodologies allows 3D magnetic nanostructures of arbitrary geometry to be produced. In this article, the physics of two-photon lithography is first detailed, before reviewing the studies to date that have exploited this fabrication route. The article then moves on to consider how non-linear optical techniques and post-processing solutions can be used to realise structures with a feature size below 100 nm, before comparing two-photon lithography with other direct write methodologies and providing a discussion on future developments.

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Micro- and nanoporous materials produced using accelerated heavy ion beams

Cited by 39 publications

References 39 publications

Flux-closure domains in high aspect ratio electroless-deposited CoNiB nanotubes

Flux-closure domains in high aspect ratio electroless-deposited CoNiB nanotubes

Self‐Supporting Metal Nanotube Networks Obtained by Highly Conformal Electroless Plating

Harnessing Multi-Photon Absorption to Produce Three-Dimensional Magnetic Structures at the Nanoscale

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