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The adhesive contact processes between a rigid spherical tip and substrates with nanogrooves of different sizes have been investigated with a large-scale molecular dynamics simulation method. Influences of the surface grooves on the load-displacement curves, the attractive forces in the loading/unloading processes, and material transfer have been discussed. Results show that compared with the contact between a tip and a smooth surface, the attractive force range becomes larger in the loading process, accompanied by several jumps of the load, and the maximum attractive forces both in the loading and unloading processes are smaller. When the groove depths are the same, the maximum attractive forces in the loading and unloading processes decrease gradually with the increase of the groove width. However, when the groove width becomes close to the contact diameter between the tip and the smooth surface, the maximum attractive force would increase slowly, tending to be close to the case of smooth surface. When the groove width is kept the same, the maximum attractive force in the loading process decreases with the increase of the groove depth, while the maximum attractive force in the unloading process is almost unchanged.
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Keywords:
- adhesive contact /
- molecular dynamics simulation /
- nanogrooves /
- pull-off force
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[3] Jacobs T D B, Ryan K E, Keating P L, Grierson D S, Lefever J A, Turner K T, Harrison J A, Carpick R W 2013 Tribol. Lett. 50 81
[4] Xie G, Ding J, Zheng B, Xue W 2009 Tribol. Int. 42 183
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[6] Chen S H, Chen P J 2010 Chin. Phys. Lett. 27 108102
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[9] Ramakrishna S N, Clasohm L Y, Rao A, Spencer N D 2011 Langmuir 27 9972
[10] Pastewka L, Robbins M O 2014 Proc. Natl. Acad. Sci. USA 111 3298
[11] Hsu S, Ying C, Zhao F 2014 Friction 2 1
[12] Rapaport D C 1995 The Art of Molecular Dynamics Simulation (Cambridge: Cambridge University Press) pp10-82
[13] Watanabe T, Fujiwara H, Noguchi H, Hoshino T, Ohdomari I 1999 Jpn. J. Appl. Phys. 38 L366
[14] Chen R L, Luo J B, Guo D, Lu X C 2008 J. Appl. Phys. 104 104907
[15] Si L N, Guo D, Luo J B, Lu X C 2011 J. Appl. Phys. 109 084335
[16] Duan F L, Wang G J, Qiu H B 2012 Acta Phys. Sin. 61 016201 (in Chinese) [段芳莉, 王光建, 仇和兵 2012 61 016201]
[17] Chen Y L, Helm C A, Israelachvili J N 1991 J. Phys. Chem. 95 10736
[18] Zhu P Z, Hu Y Z, Ma T B, Wang H 2011 Tribol. Lett. 41 41
[19] Ryan K E, Keating P L, Jacobs T D, Grierson D S, Turner K T, Carpick R W, Harrison J A 2014 Langmuir 30 2028
[20] Walsh P, Omeltchenko A, Kalia R K, Nakano A, Vashishta P, Saini S 2003 Appl. Phys. Lett. 82 118
[21] Duan F L, Wang G J, Qiu H B 2012 Acta Phys. Sin. 61 046801 (in Chinese) [段芳莉, 王光建, 仇和兵 2012 61 046801]
[22] Duan F L, Luo J B, Wen S Z 2005 Chin. Sci. Bull. 50 1661
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[1] Wei Z, Zhao Y P 2004 Chin. Phys. 13 1320
[2] Xie G, Ding J, Liu S, Luo J 2009 Surf. Interf. Anal. 41 338
[3] Jacobs T D B, Ryan K E, Keating P L, Grierson D S, Lefever J A, Turner K T, Harrison J A, Carpick R W 2013 Tribol. Lett. 50 81
[4] Xie G, Ding J, Zheng B, Xue W 2009 Tribol. Int. 42 183
[5] Zhao Y P, Wang L S, Yu T X 2003 J. Adhesion Sci. Technol. 17 519
[6] Chen S H, Chen P J 2010 Chin. Phys. Lett. 27 108102
[7] Zou M, Wang H, Larson P R, Hobbs K L, Johnson M B, Awitor O K 2006 Tribol. Lett. 24 137
[8] Ramakrishna S N, Nalam P C, Clasohm L Y, Spencer N D 2013 Langmuir 29 175
[9] Ramakrishna S N, Clasohm L Y, Rao A, Spencer N D 2011 Langmuir 27 9972
[10] Pastewka L, Robbins M O 2014 Proc. Natl. Acad. Sci. USA 111 3298
[11] Hsu S, Ying C, Zhao F 2014 Friction 2 1
[12] Rapaport D C 1995 The Art of Molecular Dynamics Simulation (Cambridge: Cambridge University Press) pp10-82
[13] Watanabe T, Fujiwara H, Noguchi H, Hoshino T, Ohdomari I 1999 Jpn. J. Appl. Phys. 38 L366
[14] Chen R L, Luo J B, Guo D, Lu X C 2008 J. Appl. Phys. 104 104907
[15] Si L N, Guo D, Luo J B, Lu X C 2011 J. Appl. Phys. 109 084335
[16] Duan F L, Wang G J, Qiu H B 2012 Acta Phys. Sin. 61 016201 (in Chinese) [段芳莉, 王光建, 仇和兵 2012 61 016201]
[17] Chen Y L, Helm C A, Israelachvili J N 1991 J. Phys. Chem. 95 10736
[18] Zhu P Z, Hu Y Z, Ma T B, Wang H 2011 Tribol. Lett. 41 41
[19] Ryan K E, Keating P L, Jacobs T D, Grierson D S, Turner K T, Carpick R W, Harrison J A 2014 Langmuir 30 2028
[20] Walsh P, Omeltchenko A, Kalia R K, Nakano A, Vashishta P, Saini S 2003 Appl. Phys. Lett. 82 118
[21] Duan F L, Wang G J, Qiu H B 2012 Acta Phys. Sin. 61 046801 (in Chinese) [段芳莉, 王光建, 仇和兵 2012 61 046801]
[22] Duan F L, Luo J B, Wen S Z 2005 Chin. Sci. Bull. 50 1661
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