Study of crater formation and its characteristics due to impact of a cluster projectile on a metal surface by molecular dynamics approach

Naspoori, Srujan K.; Kammara, Kishore K.; Kumar, Rakesh

doi:10.1016/j.nimb.2017.02.009

Cited by 2 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sputtering means the erosion and concomitant modification of solid surfaces under the influence of the accelerated ion flow [1][2][3][4][5][6][7][8][9][10][11][12][13][14] or ion-cluster beams [15,16]. Since ion energies and fluencies differ by several orders of magnitudes, the mechanisms of the ion-solid interaction, the sputtering rates and the final surface textures may be quite different [17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

New collective trampoline mechanism of accelerated ion-plasma sputtering

Gabovich

Semeniuk²,

Semeniuk³

2019

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Results of the newly found anomalous accelerated plasma ion sputtering of solid-state targets are presented. The rate of sputtered particles comprises from one to several tens of atoms per one impinging ion, ion energies being in the range of tens to five hundreds electron volts. The anomalous sputtering is realized for ion current density in the plasma flow being not less than 10 mA cm −2 and threshold specific power of the ion flow from 0.7 to 2 W cm −2 depending on the target material. The qualitative explanation proposed dubbed 'collective trampoline accelerated sputtering'. The collective nature of this sputtering regime differs from the conventional pair collision cascade one. The trampoline sputtering leads to the intense texturing of the materials with submicron characteristic structure sizes. The new sputtering method could be applied (i) in the technology of plasma ion deposition of the functional coatings to replace the widespread magnetron sputtering sources of lower productivity; (ii) in the photovoltaics to solve the problem of the so-called 'black' multi-crystalline silicon in order to reduce the light reflectance coefficient; (iii) in the production of silicon composite anodes for lithium ion batteries to enhance their lifetimes regarding charge/discharge cycles, for which the final positive result is largely determined by the surface structure of the silicon wafer for photovoltaics and the surface structure of the anode current collector for lithium-ion batteries.

show abstract

Section: Introductionmentioning

confidence: 99%

New collective trampoline mechanism of accelerated ion-plasma sputtering

Gabovich

Semeniuk²,

Semeniuk³

2019

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Regarding W, several papers of interest were published [22][23][24]. In Guo et al, clusters with three different KE are examined, namely, 1, 10 and 100 keV/cluster for low-, highand hyper-energy impacts.…”

Section: Introductionmentioning

confidence: 99%

“…While the paper is insightful, it again deals with small clusters containing only 524 atoms. Another interesting study followed; in [24] the sputtering yield, number of excavated atoms from the crater, crater depth, height of the crater rim, radius and aspect ratio are calculated for incident energies ranging from 10 eV to 10 keV. However, also here very small clusters (14, 32 and 64 atoms) were considered.…”

Section: Introductionmentioning

confidence: 99%

Analysis of hypervelocity impacts: the tungsten case

Fraile¹,

Dwivedi²,

Bonny³

et al. 2022

Nucl. Fusion

View full text Add to dashboard Cite

The atomistic mechanisms of damage initiation during high velocity (v up to 9 km/s, kinetic energies up to 200 keV) impacts of W projectiles on a W surface have been investigated using parallel molecular-dynamics simulations involving large samples (up to 40 million atoms). Various aspects of the impact at high velocities, where the projectile and part of the target materials undergo massive plastic deformation, breakup, melting, and vaporization, are analyzed. Different stages of the penetration process have been identified through a detailed examination of implantation, crater size and volume, sputtered atoms, and dislocations created by the impacts. The crater volume increases linearly with the kinetic energy for a given impactor; and the total dislocation length increases with the kinetic energy but depends itself on the size of the impactor. Furthermore, the total dislocation length is less dependent of the fine details of the interatomic potential. The results are rationalized based on the physical properties of bcc W.

show abstract

Study of crater formation and its characteristics due to impact of a cluster projectile on a metal surface by molecular dynamics approach

Cited by 2 publications

References 23 publications

New collective trampoline mechanism of accelerated ion-plasma sputtering

New collective trampoline mechanism of accelerated ion-plasma sputtering

Analysis of hypervelocity impacts: the tungsten case

Contact Info

Product

Resources

About