Effects of adsorbed water layer structure on adhesion force of silicon oxide nanoasperity contact in humid ambient.

The origin of the large relative-humidity (RH) dependence of the adhesion force in the single-asperity contact between silicon oxide surfaces is elucidated. As RH increases, the adhesion force measured with an atomic force microscopy (AFM) initially increases, reaches a maximum, and then decreases at high RH. The capillary force alone cannot explain the observed magnitude of the RH dependence. The origin of the large RH dependence is due to the presence of an icelike structured water adsorbed at the silicon oxide surface at room temperature. A solid-adsorbate-solid model is developed calculating the contributions from capillary forces, van der Waals interactions, and the rupture of an ice-ice bridge at the center of the contact region. This model illustrates how the structure, thickness, and viscoelastic behavior of the adsorbed water layer influence the adhesion force of the silicon oxide nanoasperity contact.

[1]  K. Strawhecker,et al.  Reduction of adhesion and friction of silicon oxide surface in the presence of n-propanol vapor in the gas phase , 2005 .

[2]  M. Bellissent-Funel,et al.  Characterization of the State of Two-Dimensionally Condensed Water on Hydroxylated Chromium(III) Oxide Surface through FT-IR, Quasielastic Neutron Scattering, and Dielectric Relaxation Measurements , 1999 .

[3]  George C Schatz,et al.  How narrow can a meniscus be? , 2004, Physical review letters.

[4]  Seong H. Kim,et al.  Evolution of the adsorbed water layer structure on silicon oxide at room temperature. , 2005, The journal of physical chemistry. B.

[5]  K. Rowlen,et al.  Adhesion forces measured by atomic force microscopy in humid air , 2000, Analytical chemistry.

[6]  M. Bellissent-Funel,et al.  Status of experiments probing the dynamics of water in confinement , 2003, The European physical journal. E, Soft matter.

[7]  R. Bryant,et al.  Nuclear magnetic relaxation dispersion measurement of water mobility at a silica surface , 1987 .

[8]  J. Phair,et al.  Room Temperature Solid Surface Water with Tetrahedral Jumps of 2H Nuclei Detected in 2H2O-Hydrated Porous Silicates , 2004 .

[9]  A. Adamson.  Physical chemistry of surfaces , 1960 .

[10]  D. E. Aston,et al.  Critical Phenomena of Water Bridges in Nanoasperity Contacts , 2001 .

[11]  RELAXATION TIME OF CONFINED AQUEOUS FILMS UNDER SHEAR , 1997 .

[12]  G. Ewing.  Thin Film Water , 2004 .

[13]  C. Mate,et al.  Influence of capillary condensation of water on nanotribology studied by force microscopy , 1994 .

[14]  M. Parrinello,et al.  Two Dimensional Ice Adsorbed on Mica Surface , 1997 .

[15]  Xudong Xiao,et al.  Investigation of Humidity-Dependent Capillary Force , 2000 .

[16]  J. Israelachvili.  Intermolecular and surface forces , 1985 .

[17]  J. Parlebas,et al.  Growth, electronic, magnetic and spectroscopic properties of transition metals on graphite , 1999 .

[18]  Sir William Thomson F.R.S..  LX. On the equilibrium of vapour at a curved surface of liquid , 1871 .

[19]  Forces Between Surfaces in Liquids , 1988, Science.

[20]  Chen,et al.  Experimental determination of the nature of diffusive motions of water molecules at low temperatures. , 1985, Physical review. A, General physics.

[21]  H. Pollock,et al.  Adhesion Forces between Glass and Silicon Surfaces in Air Studied by AFM: Effects of Relative Humidity, Particle Size, Roughness, and Surface Treatment , 2002 .

[22]  Michael W. Mahoney,et al.  A five-site model for liquid water and the reproduction of the density anomaly by rigid, nonpolarizable potential functions , 2000 .

[23]  J. Rothstein,et al.  Inhomogeneous transient uniaxial extensional rheometry , 2002 .

[24]  M. Salmeron,et al.  Wetting and capillary phenomena of water on mica , 1998 .

[25]  Bharat Bhushan,et al.  Thin-film friction and adhesion studies using atomic force microscopy , 2000 .

[26]  J. Sader,et al.  Calibration of rectangular atomic force microscope cantilevers , 1999 .

[27]  M. Salmeron,et al.  Imaging the Condensation and Evaporation of Molecularly Thin Films of Water with Nanometer Resolution , 1995, Science.

[28]  F. Stillinger,et al.  Molecular dynamics study of ice crystallite melting , 1983 .

[29]  E. Wang,et al.  Water adsorption on hydroxylated silica surfaces studied using the density functional theory , 2005 .

[30]  Frederick M. Fowkes,et al.  ADDITIVITY OF INTERMOLECULAR FORCES AT INTERFACES. I. DETERMINATION OF THE CONTRIBUTION TO SURFACE AND INTERFACIAL TENSIONS OF DISPERSION FORCES IN VARIOUS LIQUIDS1 , 1963 .

[31]  Adrian P. Sutton,et al.  On the stability of a tip and flat at very small separations , 1988 .

[32]  Shen,et al.  Vibrational spectra of water molecules at quartz/water interfaces. , 1994, Physical review letters.

[33]  Jacob N. Israelachvili,et al.  Interactions of silica surfaces , 1994 .

[34]  J. Douillard,et al.  Calculation of surface enthalpy of solids from an ab initio electronegativity based model: case of ice. , 2003, Journal of colloid and interface science.