Formation of partially reversible nanostructures in Ni40Ti60 thin films by focused electron beam irradiation

Sniķeris, Jānis; Gerbreders, V.; Tamanis, E.

doi:10.1117/1.jmm.20.2.020502

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…Metals with lower melting points produce higher nanostructures and metals with a higher magnetic susceptibility produce much wider structures. We have previously also reported on the creation of nanostructures exhibiting a partial shape memory effect on the surface of a shape memory alloy nitinol by irradiation with a focused EB [8]. These properties of the obtained nanostructures could not be explained through the simple deposition of carbon on a metal surface.…”

Section: Discussionmentioning

confidence: 99%

“…It has also been observed that metal surfaces with a higher magnetic susceptibility produce wider structures. Partially reversible nanostructures were recently produced on the surface of a shape memory NiTi alloy using focused EB irradiation [8]. The volume of those nanostructures decreased by up to 88% upon heating the NiTi surface to 100°C from room temperature, while their height remained unchanged.…”

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confidence: 99%

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Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

Sniķeris¹,

Gerbreders²,

Bulanovs³

et al. 2022

Preprint

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Metallic nanostructures have many applications, including photonics and plasmonics due to their ability to absorb or emit light at frequencies which depend on their size and shape. It was recently shown that irradiation by a focused electron beam can promote nanostructure growth on metal surfaces and the height of these structures depends on irradiation time and material of the surface. However, the effects on growth dynamics of numerous irradiation parameters, such as beam current or angle of incidence, have not yet been studied in detail. In this work, we explore the effects of the focusing, the angle of incidence, and the current of the electron beam on the size and shape of the resulting structures on an Ag surface, as well as investigating how the nitrogen plasma cleaning procedure of a vacuum chamber can affect the growth of these structures. A beam current of around 40 pA resulted in the fastest structure growth rate. Increasing the beam diameter and angle of incidence decreased the growth rate, but raising the beam focus up to 5-6 μm above the surface increased it. The vacuum chamber cleaning reduced the structure’s growth rate for a few hours. These findings can help better control and optimise the nanostructure growth on metal surfaces undergoing irradiation by a focused electron beam.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

Sniķeris¹,

Gerbreders²,

Bulanovs³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Conversely, metals with higher volume magnetic susceptibility produced much wider nanodots with a higher volume. A subsequent study [ 31 ] of surface irradiation on a shape memory alloy Ni40Ti60 suggests that surface expansion might take place during the growth of the nanodots. An additional deformation of the surface was observed around nanodots on an Ni40Ti60 surface, which is believed to be caused by the surrounding surface layer of twinned B19’ martensite being pulled up along the growth of the nanodot.…”

Section: Introductionmentioning

confidence: 99%

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

Sniķeris¹,

Gerbreders²,

Bulanovs³

et al. 2022

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Metallic nanostructures are applied in many fields, including photonics and plasmonics, due to their ability to absorb or emit light at frequencies which depend on their size and shape. It was recently shown that irradiation by a focused electron beam can promote the growth of nanostructures on metal surfaces and the height of these structures depends on the duration of the irradiation and the material of the surface. However, the effects on growth dynamics of numerous irradiation parameters, such as beam current or angle of incidence, have not yet been studied in detail. We explore the effects of focusing, angle of incidence, and current of the electron beam on the size and shape of the resulting structures on an Ag surface. In addition, we investigate how the nitrogen plasma cleaning procedure of a vacuum chamber can affect the growth of these structures. A beam current of around 40 pA resulted in the fastest structure growth rate. By increasing the beam diameter and angle of incidence the growth rate decreased; however, by raising the beam focus up to 5–6 μm above the surface the growth rate increased. Vacuum chamber cleaning reduced structure growth rate for a few hours. These findings can help to better control and optimise the growth of nanostructures on metal surfaces undergoing irradiation by a focused electron beam.

show abstract

Formation of partially reversible nanostructures in Ni40Ti60 thin films by focused electron beam irradiation

Cited by 2 publications

References 20 publications

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

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