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Damage of low-energy ion irradiation on copper nanowire: molecular dynamics simulation |
Zou Xue-Qing(邹雪晴)a), Xue Jian-Ming(薛建明) a)b)†, and Wang Yu-Gang(王宇钢)a) |
a State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100861, China; b Center for Applied Physics and Technology, Peking University, Beijing 100861, China |
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Abstract Physical and chemical phenomena of low-energy ion irradiation on solid surfaces have been studied systematically for many years, due to the wide applications in surface modification, ion implantation and thin-film growth. Recently the bombardment of nano-scale materials with low-energy ions gained much attention. Comared to bulk materials, nano-scale materials show different physical and chemical properties. In this article, we employed molecular dynamics simulations to study the damage caused by low-energy ion irradiation on copper nanowires. By simulating the ion bombardment of 5 different incident energies, namely, 1 keV, 2 keV, 3 keV, 4 keV and 5 keV, we found that the sputtering yield of the incident ion is linearly proportional to the energies of incident ions. Low-energy impacts mainly induce surface damage to the nanowires, and only a few bulk defects were observed. Surface vacancies and adatoms accumulated to form defect clusters on the surface, and their distribution are related to the type of crystal plane, e.g. surface vacancies prefer to stay on (100) plane, while adatoms prefer (110) plane. These results reveal that the size effect will influence the interaction between low-energy ion and nanowire.
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Received: 14 March 2009
Revised: 26 August 2009
Accepted manuscript online:
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PACS:
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61.82.Rx
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(Nanocrystalline materials)
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61.80.Jh
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(Ion radiation effects)
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61.82.Bg
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(Metals and alloys)
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79.20.Rf
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(Atomic, molecular, and ion beam impact and interactions with surfaces)
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68.35.Dv
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(Composition, segregation; defects and impurities)
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61.80.Az
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(Theory and models of radiation effects)
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Fund: Project supported by the National
Natural Science Foundation of China (Grant No.~10675009). |
Cite this article:
Zou Xue-Qing(邹雪晴), Xue Jian-Ming(薛建明), and Wang Yu-Gang(王宇钢) Damage of low-energy ion irradiation on copper nanowire: molecular dynamics simulation 2010 Chin. Phys. B 19 036102
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[1] |
Patolsky F, Timko B P, Zheng G and Lieber C M 2007 MRS-Bulletin 32 142
|
[2] |
Lu W and Lieber C M 2007 Nat. Mater. 6 841
|
[3] |
Kang J W, Seo J J, Byun K R and Hwang H J 2002 Phys. Rev. B66 125405
|
[4] |
Diao J, Gall K and Dunn M L 2004 J. Mech. Phys. Sol. 52 1935
|
[5] |
Gu X K and Cao B Y 2007 Chin. Phys. 16 3777
|
[6] |
Wen Y, Zhang Y, Zhu Z and Sun S 2009 Acta Phys. Sin.58 2585 (in Chinese)
|
[7] |
Tombrello T A 1987 Nucl. Instr. Meth. Phys. Res. B27 221
|
[8] |
Rusponi S, Boragno C and Valbusa U 1997 Phys. Rev. Lett.78 2795
|
[9] |
Rusponi S, Costantini G, de Mongeot F Buatier, Boragno C and ValbusaU 1999 Appl. Phys. Lett. 75 3318
|
[10] |
Ye Z Y and Zhang Q Y 2001 Chin. Phys. 10 329
|
[11] |
Ishigami M, Choi H J, Aloni S, Louie S G, Cohen M L and Zettl A 2004 Phys. Rev. Lett. 93 196803
|
[12] |
Biersack J P 1987 Nucl. Instr. Meth. Phys. Res. B27 21
|
[13] |
Ritter M, Stindtmann M, Farle M X, Baberschke K 1996 Surf.Sci. 348 243
|
[14] |
Xue J M and Imanishi N 2002 Chin. Phys. 11 245
|
[15] |
Pan J, Takeda Y, Amekura H, Nakayama Y, Song M and Kishimoto N 2008 Nanotechnology 19 375306
|
[16] |
Sun Z H, Wang X X and Wu H A 2008 J. Appl. Physiol. 104 033501
|
[17] |
Ziegler J F, Biersack J P and Littmark U 1985 The Stoppingand Range of Ions in Matter (Oxford: Pergamon Press)
|
[18] |
Daw M S and Baskes M I 1984 Phys. Rev. B 29 6443
|
[19] |
Mishin Y, Mehl M J, Papaconstantopoulos D A, Voter A F and Kress J D2001 Phys. Rev. B 63 224106
|
[20] |
Osetsky Y N and Bacon D J 2001 Nucl. Instr. Meth. Phys. Res. B 180 85
|
[21] |
Eckstein W, Garcia R C, Roth J and Ottenberger W 1996 Phys. Rev. B 53 11376
|
[22] |
Eckstein W, Garcia R C, Roth J and Ottenberger W 1993 Sputtering Data Report IPP p196
|
[23] |
Wu H A, Soh A K, Wang X X and Sun Z H 2004 Key Eng. Mat. 261 33
|
[24] |
Jarvi T T, Kuronen A and Nordlund K 2007 J. Appl. Physiol. 102 124304
|
[25] |
Stoltze P 1994 J. Phys.: Condens. Matter 6 9495
|
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