Unraveling atomic-level self-organization at the plasma-material interface

Allain, Jean Paul; Shetty, Akshath R.

doi:10.1088/1361-6463/aa7506

Cited by 19 publications

(23 citation statements)

References 152 publications

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“…The high nanopatterning effectiveness observed due to DIS on porous and polished c.p. Ti (100% α phase, hcp), is in agreement with a previous work of the authors about DIS on Ti6Al4V [34], and with other similar studies [36,50]. The combination of flat and porous surface areas seems not to mean any obstacle to DIS efficiency for surface nanopatterning of c.p.…”

Section: Discussionsupporting

confidence: 92%

“…Ti samples depicted in Figures 2 and 3 are consistent with some previous studies about Ar + ion beam irradiation on c.p. Ti [34]; similar to that work, mostly nanorods and some mixed areas with nanoripples for an incidence angle of 60° were obtained. This similar…”

Section: Discussionsupporting

confidence: 87%

“…Ti samples depicted in Figures and 3 are consistent with some previous studies about Ar + ion beam irradiation on c.p. Ti [34]; similar to that work, mostly nanorods and some mixed areas with nanoripples for an incidence angle of 60 • were obtained. This similar effect is due to a slightly higher incidence angle than transition angle (TA) between nanoripples formation (normal incidence) and straight and long nanorods (highly off-normal incidence).…”

Section: Discussionsupporting

confidence: 87%

“…DIS experiments were performed at the Radiation Surface Science and Engineering Laboratory (RSSEL) in the School of Nuclear Engineering, Purdue University, in the Particle and Radiation Interaction with Soft and Hard Matter (PRIHSM) facility, originally developed and operated by Prof. Jean Paul Allain at Purdue University [27]. DIS conditions are summarized in Table 1; Energy, fluence, and incidence angle were chosen after an exhaustive revision of our previous DIS nano-structuring results on metallic materials [33,34], as well as from some other revised works on Ti, TiO 2 , Cu, Au, and Ag [35][36][37][38][39][40][41][42][43][44][45]. Argon (Ar + ) source at 1 and 0.5 keV was used to irradiate PPS samples and NPS; the selection of DIS parameters were designed to evaluate their effect on nanopatterning.…”

Section: Directed Irradiation Synthesis (Dis) Of Porous and Non-poroumentioning

confidence: 99%

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Directed Irradiation Synthesis as an Advanced Plasma Technology for Surface Modification to Activate Porous and “as-received” Titanium Surfaces

Civantos

Allain

Pavón

et al. 2019

Metals

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For the design of smart titanium implants, it is essential to balance the surface properties without any detrimental effect on the bulk properties of the material. Therefore, in this study, an irradiation-driven surface modification called directed irradiation synthesis (DIS) has been developed to nanopattern porous and “as-received” c.p. Ti surfaces with the aim of improving cellular viability. Nanofeatures were developed using singly-charged argon ions at 0.5 and 1.0 keV energies, incident angles from 0° to 75° degrees, and fluences up to 5.0 × 1017 cm−2. Irradiated surfaces were evaluated by scanning electron microscopy, atomic force microscopy and contact angle, observing an increased hydrophilicity (a contact angle reduction of 73.4% and 49.3%) and a higher roughness on both surfaces except for higher incident angles, which showed the smoothest surface. In-vitro studies demonstrated the biocompatibility of directed irradiation synthesis (DIS) reaching 84% and 87% cell viability levels at 1 and 7 days respectively, and a lower percentage of damaged DNA in tail compared to the control c.p. Ti. All these results confirm the potential of the DIS technique to modify complex surfaces at the nanoscale level promoting their biological performance.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 87%

Section: Directed Irradiation Synthesis (Dis) Of Porous and Non-poroumentioning

confidence: 99%

See 2 more Smart Citations

Directed Irradiation Synthesis as an Advanced Plasma Technology for Surface Modification to Activate Porous and “as-received” Titanium Surfaces

Civantos

Allain

Pavón

et al. 2019

Metals

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“…Alain and Shetty [2] review self-organization mechanisms of nanoscale morphology for various types of materials, and connect these with irradiation-driven defect and surface mechanisms.…”

Section: Plasma-surface Interactions Challengesmentioning

confidence: 99%

Editorial for achieving atomistic control in plasma–material interactions

Oehrlein

Hamaguchi

Keudell

2017

J. Phys. D: Appl. Phys.

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Advanced Materials for Next‐Generation Spacecraft

et al. 2018

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Spacecraft are expected to traverse enormous distances over long periods of time without an opportunity for maintenance, re‐fueling, or repair, and, for interplanetary probes, no on‐board crew to actively control the spacecraft configuration or flight path. Nevertheless, space technology has reached the stage when mining of space resources, space travel, and even colonization of other celestial bodies such as Mars and the Moon are being seriously considered. These ambitious aims call for spacecraft capable of self‐controlled, self‐adapting, and self‐healing behavior. It is a tough challenge to address using traditional materials and approaches for their assembly. True interplanetary advances may only be attained using novel self‐assembled and self‐healing materials, which would allow for realization of next‐generation spacecraft, where the concepts of adaptation and healing are at the core of every level of spacecraft design. Herein, recent achievements are captured and future directions in materials‐driven development of space technology outlined.

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Unraveling atomic-level self-organization at the plasma-material interface

Cited by 19 publications

References 152 publications

Directed Irradiation Synthesis as an Advanced Plasma Technology for Surface Modification to Activate Porous and “as-received” Titanium Surfaces

Directed Irradiation Synthesis as an Advanced Plasma Technology for Surface Modification to Activate Porous and “as-received” Titanium Surfaces

Editorial for achieving atomistic control in plasma–material interactions

Advanced Materials for Next‐Generation Spacecraft

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