Adhesion and friction characteristics of carbon nanotube arrays

被引:5
作者
Buldum, A. [1 ]
机构
[1] Univ Akron, Dept Phys, Akron, OH 44325 USA
关键词
carbon nanotubes; bio-mimetic adhesives; nanotribology; molecular dynamics; adhesion; friction; DRY ADHESIVES; ATTACHMENT; SURFACES;
D O I
10.1088/0957-4484/25/34/345704
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
There has been a great deal of interest in understanding, design and fabrication of bio-mimetic and bio-inspired adhesives in recent years. In this paper we present theoretical investigations on adhesion, friction behaviors and characteristics of fibrillar arrays composed of noninteracting carbon nanotubes for bio-inspired dry adhesives. Contact, compression, subsequent pulling off and dry sliding friction simulations were performed. It is demonstrated that there are two different adhesion forces during pull off. Static friction force values are in between 40 and 60 N cm(-2) at different loads and they are significantly larger than the normal adhesion forces. Dynamic friction force and load are anisotropic and they depend on the direction of the motion. It is also found that friction force values and friction coefficients decrease although contact length and contact area increase when the loads are high. This is due to the arms of the nanotubes which bend significantly and act as stiffer springs at high loads.
引用
收藏
页数:7
相关论文
共 21 条
[1]   From micro to nano contacts in biological attachment devices [J].
Arzt, E ;
Gorb, S ;
Spolenak, R .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (19) :10603-10606
[2]   Evidence for van der Waals adhesion in gecko setae [J].
Autumn, K ;
Sitti, M ;
Liang, YCA ;
Peattie, AM ;
Hansen, WR ;
Sponberg, S ;
Kenny, TW ;
Fearing, R ;
Israelachvili, JN ;
Full, RJ .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (19) :12252-12256
[3]   EMPIRICAL POTENTIAL FOR HYDROCARBONS FOR USE IN SIMULATING THE CHEMICAL VAPOR-DEPOSITION OF DIAMOND FILMS [J].
BRENNER, DW .
PHYSICAL REVIEW B, 1990, 42 (15) :9458-9471
[4]   Atomic scale sliding and rolling of carbon nanotubes [J].
Buldum, A ;
Lu, JP .
PHYSICAL REVIEW LETTERS, 1999, 83 (24) :5050-5053
[5]   Contact, nanoindentation, and sliding friction [J].
Buldum, A ;
Ciraci, S ;
Batra, IP .
PHYSICAL REVIEW B, 1998, 57 (04) :2468-2476
[6]   Controlled lateral and perpendicular motion of atoms on metal surfaces [J].
Buldum, A ;
Ciraci, S .
PHYSICAL REVIEW B, 1996, 54 (03) :2175-2183
[7]   Scaling laws of structural lubricity [J].
Dietzel, D., 1600, American Physical Society (111)
[8]   Carbon nanotube-based synthetic gecko tapes [J].
Ge, Liehui ;
Sethi, Sunny ;
Ci, Lijie ;
Ajayan, Pulickel M. ;
Dhinojwala, Ali .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2007, 104 (26) :10792-10795
[9]   Cooperative Adhesion and Friction of Compliant Nanohairs [J].
Ge, Liehui ;
Ci, Lijie ;
Goyal, Anubha ;
Shi, Rachel ;
Mahadevan, L. ;
Ajayan, P. M. ;
Dhinojwala, Ali .
NANO LETTERS, 2010, 10 (11) :4509-4513
[10]   Carbon nanotubes, buckyballs, ropes, and a universal graphitic potential [J].
Girifalco, LA ;
Hodak, M ;
Lee, RS .
PHYSICAL REVIEW B, 2000, 62 (19) :13104-13110