IMAGING AND MODIFICATION OF AU(111) MONATOMIC STEPS WITH ATOMIC-FORCE MICROSCOPY

被引:32
作者
GOSS, CA [1 ]
BRUMFIELD, JC [1 ]
IRENE, EA [1 ]
MURRAY, RW [1 ]
机构
[1] UNIV N CAROLINA, KENAN LABS CHEM, CHAPEL HILL, NC 27599 USA
关键词
D O I
10.1021/la00035a042
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
AFM images of Au(111) films on mica substrates show crystallite plateaus averaging 230 nm across and separated by ca. 20-nm-deep valleys. Images obtained at relatively low (approximately 20 nN) tip-sample forces reveal well-defined monatomic-high (0.24 nm) terraces on top of individual crystallites. At high tip-sample force (approximately 200 nN), scanning the AFM tip results in selective removal of Au atoms at and near monatomic terrace edges. Generation of monolayer-deep pits as small as 12 x 12 nm was observed; however, no such deformations were observed in regions void of defects. In order to compare our observations with those of other researchers, a model is presented for estimation of the AFM tip dimension from high-resolution step profiles of the monatomic terrace edges. The analysis gave a tip radius of curvature of 43 nm, from which further calculation of tip-sample pressures employing Hertzian and Johnson-Kendall-Roberts theories was possible. The results suggest that the contact mechanics of the Au surface are a function of defect density within and near the tip-sample contact area.
引用
收藏
页码:2986 / 2994
页数:9
相关论文
共 79 条
  • [21] CHARACTERIZATION OF GOLD SURFACES FOR USE AS SUBSTRATES IN SCANNING TUNNELING MICROSCOPY STUDIES
    EMCH, R
    NOGAMI, J
    DOVEK, MM
    LANG, CA
    QUATE, CF
    [J]. JOURNAL OF APPLIED PHYSICS, 1989, 65 (01) : 79 - 84
  • [22] PROBING REDOX-INDUCED MOLECULAR-TRANSFORMATIONS BY ATOMIC-RESOLUTION SCANNING TUNNELING MICROSCOPY - IODIDE ADSORPTION AND ELECTROOXIDATION ON AU(111) IN AQUEOUS-SOLUTION
    GAO, XP
    WEAVER, MJ
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (22) : 8544 - 8551
  • [23] OBSERVING SURFACE CHEMICAL-TRANSFORMATIONS BY ATOMIC-RESOLUTION SCANNING TUNNELING MICROSCOPY - SULFIDE ELECTROOXIDATION ON AU(111)
    GAO, XP
    ZHANG, Y
    WEAVER, MJ
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (11) : 4156 - 4159
  • [24] VACUUM-DEPOSITED GOLD-FILMS .1. FACTORS AFFECTING THE FILM MORPHOLOGY
    GOLAN, Y
    MARGULIS, L
    RUBINSTEIN, I
    [J]. SURFACE SCIENCE, 1992, 264 (03) : 312 - 326
  • [25] INSITU ATOMIC FORCE MICROSCOPIC IMAGING OF ELECTROCHEMICAL FORMATION OF A THIN DIELECTRIC FILM - POLY(PHENYLENE OXIDE)
    GOSS, CA
    BRUMFIELD, JC
    IRENE, EA
    MURRAY, RW
    [J]. LANGMUIR, 1992, 8 (05) : 1459 - 1463
  • [26] IMAGING THE INCIPIENT ELECTROCHEMICAL OXIDATION OF HIGHLY ORIENTED PYROLYTIC-GRAPHITE
    GOSS, CA
    BRUMFIELD, JC
    IRENE, EA
    MURRAY, RW
    [J]. ANALYTICAL CHEMISTRY, 1993, 65 (10) : 1378 - 1389
  • [27] ATOMIC FORCE MICROSCOPY OF ATOMIC-SCALE LEDGES AND ETCH PITS FORMED DURING DISSOLUTION OF QUARTZ
    GRATZ, AJ
    MANNE, S
    HANSMA, PK
    [J]. SCIENCE, 1991, 251 (4999) : 1343 - 1346
  • [28] GREEN MP, 1991, SURF SCI, V259, pL743, DOI 10.1016/0039-6028(91)90545-4
  • [29] INSITU SCANNING TUNNELING MICROSCOPY STUDIES OF THE UNDERPOTENTIAL DEPOSITION OF LEAD ON AU(111)
    GREEN, MP
    HANSON, KJ
    SCHERSON, DA
    XING, X
    RICHTER, M
    ROSS, PN
    CARR, R
    LINDAU, I
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (06) : 2181 - 2184
  • [30] DETAILED UNDERPOTENTIAL DEPOSITION OF COPPER ON GOLD(111) IN AQUEOUS-SOLUTIONS
    HACHIYA, T
    HONBO, H
    ITAYA, K
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 315 (1-2): : 275 - 291