STICK TO SLIP TRANSITION AND ADHESION OF LUBRICATED SURFACES IN MOVING CONTACT

被引:106
作者
REITER, G [1 ]
DEMIREL, AL [1 ]
PEANASKY, J [1 ]
CAI, LL [1 ]
GRANICK, S [1 ]
机构
[1] UNIV ILLINOIS, DEPT MAT SCI & ENGN, URBANA, IL 61801 USA
关键词
D O I
10.1063/1.467633
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The friction of dry self-assembled monolayers, chemically attached to a solid surface and comprising a well-defined interface for sliding, is compared to the case of two solids separated by an ultrathin confined liquid. The monolayers were condensed octadecyltriethoxysilane (OTE). The liquid was squalane (C30H62), a film 2.0 nm thick confined between parallel plates of mica. The method of measurement was a surface forces apparatus, modified for oscillatory shear. The principal observations were the same in both cases: (1) Predominantly elastic behavior in the linear response state was followed by a discontinuous transition to a mostly dissipative state at larger deformations. The elastic energy stored at the transition was low, of the order of 0.1 kT per molecule. This transition was exactly repeatable in repetitive cycles of oscillation and reversible with pronounced hysteresis. (2) The dissipative stress in the sliding state was almost independent of peak sliding velocity when this was changed over several decades. Significant (although smaller) elastic stress also persisted, which decreased with increasing deflection amplitude but was almost independent of oscillation frequency. (3) The adhesive energy in the sliding state was significantly reduced from that measured at rest. This similarity of friction in the two systems, dry and wet sliding, leads us to speculate that, similar to plastic deformation of solids, sliding in the confined liquid films is the result of slippage along an interface.
引用
收藏
页码:2606 / 2615
页数:10
相关论文
共 64 条
  • [1] Bowden F.P., 1973, FRICTION INTRO TRIBO
  • [2] DEFORMATION, MELTING, AND RELAXATION OF STRUCTURED COLLOIDAL DISPERSIONS
    BRADBURY, A
    GOODWIN, JW
    HUGHES, RW
    [J]. LANGMUIR, 1992, 8 (12) : 2863 - 2872
  • [3] BRAGG WL, 1947, P ROY SOC LOND A MAT, V190, P474
  • [4] THE SHEAR PROPERTIES OF LANGMUIR-BLODGETT LAYERS
    BRISCOE, BJ
    EVANS, DCB
    [J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1982, 380 (1779): : 389 - &
  • [5] CABANE B, COMMUNICATION
  • [6] STRUCTURAL DEFECTS IN SELF-ASSEMBLED ORGANIC MONOLAYERS VIA COMBINED ATOMIC-BEAM AND X-RAY-DIFFRACTION
    CAMILLONE, N
    CHIDSEY, CED
    EISENBERGER, P
    FENTER, P
    LI, J
    LIANG, KS
    LIU, GY
    SCOLES, G
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (01) : 744 - 747
  • [7] PROPERTIES OF EARTHQUAKES GENERATED BY FAULT DYNAMICS
    CARLSON, JM
    LANGER, JS
    [J]. PHYSICAL REVIEW LETTERS, 1989, 62 (22) : 2632 - 2635
  • [8] CORRELATION BETWEEN ADHESION HYSTERESIS AND PHASE STATE OF MONOLAYER FILMS
    CHAUDHURY, MK
    OWEN, MJ
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (21) : 5722 - 5726
  • [9] STRUCTURAL-CHANGES AND ORIENTATIONAL ORDER IN A SHEARED COLLOIDAL SUSPENSION
    CHEN, LB
    ZUKOSKI, CF
    ACKERSON, BJ
    HANLEY, HJM
    STRATY, GC
    BARKER, J
    GLINKA, CJ
    [J]. PHYSICAL REVIEW LETTERS, 1992, 69 (04) : 688 - 691
  • [10] FLOW OF ORDERED LATEX SUSPENSIONS - YIELDING AND CATASTROPHIC SHEAR THINNING
    CHEN, LB
    ZUKOSKI, CF
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (14): : 2629 - 2639