Noncontact Atomic Force Microscopy - Yale School of Engineering ...

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Oral Presentations Wednesday, 12 August 56
We-0900 Imaging Single Atoms on Oxide Surfaces – Gold on Alumina/NiAl(110) Markus Heyde, Georg Hermann Simon, Thomas König, and Hans-Joachim Freund Fritz-Haber-Institute of the Max-Planck-Society, Faradayweg 4-6, D-14195 Berlin, Germany A logical next step after gaining atomic resolution on complex surfaces of wide band-gap materials with FM-DFM is the determination and characterization of ad-atom adsorption sites on such materials. Imaging metal ad-atoms on complex oxide surfaces with atomic resolution is of a certain value in the study of these materials and has not been shown before. Here we present recent work on adsorbed gold atoms on the ultrathin alumina on NiAl(110) with its large complex surface unit cell as an example. It can be shown that an established contrast in FM-DFM [1,2] enables the determination of adsorption sites with atomic scale precision. This holds despite the fact that gold is rather easily removed by the tip and gives confidence for atomic scale characterisation and manipulation of ad-species on oxide surfaces with FM-DFM. Obtained results are compared to density functional theory calculations for preferred adsorption sites of gold atoms on this alumina film [3]. Figure 1: (a) Atomic resolution FM-DFM image of the ultrathin alumina on NiAl(110). The large unit cell (here an A domain) is indicated (scan range 4.2 nm × 4.2 nm ). (b) FM-DFM image of adsorbed gold atoms on the alumina film (scan range 10 nm × 10 nm). (c) Preferential adsorption sites for gold atoms as determined by density functional theory [3]. [1] G. H. Simon, T. König, M. Nilius, H.-P. Rust, M. Heyde, and H.-J. Freund; Phys. Rev. B 78 (2008) 113401. [2] G. Kresse, M. Schmid, E. Napetschnig, M. Shishkin, L. Köhler, and P. Varga; Science 308 (2005) 1440. [3] N. Nilius, M.V. Ganduglia-Pirovano, V. Brázdová, M. Kulawik, J. Sauer, and H.-J. Freund; Phys. Rev. Lett. 100 (2008) 096802. 57
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12 th International Conference on N
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Welcome Dear conference participant
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Topics • Atomic resolution imagin
Page 7 and 8: Committees Program Committee Jaime
Page 9 and 10: General Information (cont.) Oral Pr
Page 11 and 12: Exhibitors 9
Page 13 and 14: Proceedings (cont.) 3. Length: Pape
Page 15 and 16: Conference Program 13
Page 17 and 18: Program Summary of the NC-AFM 2009
Page 19 and 20: Monday, August 10 Satellite Worksho
Page 21 and 22: Wednesday, August 12 Oxides Chair:
Page 23 and 24: Friday, August 14 Method Developmen
Page 25 and 26: Poster Session I cont. (Tuesday) In
Page 27 and 28: POSTER Session II (Wednesday) Molec
Page 29 and 30: Poster Session II cont. (Wednesday)
Page 31 and 32: Non-retarded and retarded interacti
Page 33 and 34: Mo-0955 Multiple Scattering Casimir
Page 35 and 36: Diego Dalvit 1 Dispersive Casimir i
Page 37 and 38: Using Casimir and capillary forces
Page 39 and 40: Near-field radiative heat transfer
Page 41 and 42: Mo-1615 Tricks and facts in a high
Page 43 and 44: Measuring the topological dependenc
Page 45 and 46: Mo-1755 Contact potential differenc
Page 47 and 48: 3D Scanning Force Microscopy at Sol
Page 49 and 50: Tu-1000 Experimental and Theoretica
Page 51 and 52: Dynamic Force Spectroscopy of Singl
Page 53 and 54: Simultaneous measurement of force a
Page 55 and 56: Water, Ions, Membranes, Real Metals
Page 57: Tu-1530 The Effective Quality Facto
Page 61 and 62: We-0940 Character of the short-rang
Page 63 and 64: We-1020 Local surface photovoltage
Page 65 and 66: We-1140 Theoretical DFT simulations
Page 67 and 68: We-1220 Theoretical study of the fo
Page 69 and 70: Steering the formation of molecular
Page 71 and 72: Molecular scale dissipation in olig
Page 73 and 74: Dependence of the atomic scale imag
Page 75 and 76: Th-0940 Intramolecular features of
Page 77 and 78: Th-1020 Adhesion-induced energy dis
Page 79 and 80: Measuring Atomic Charge States by n
Page 81 and 82: Th-1220 Controlling electron transf
Page 83 and 84: Oral Presentations Friday, 14 Augus
Page 85 and 86: Small amplitude atomic resolution N
Page 87 and 88: Fr-1000 Visualization of Anisotropi
Page 89 and 90: Atomic resolution dynamic lateral f
Page 91 and 92: Bimodal AFM imaging of antibodies a
Page 93 and 94: Poster Session I Tuesday, 11 August
Page 95 and 96: P.I-02 Force Map of Atomic Force Mi
Page 97 and 98: P.I-04 Improved atomic-scale contra
Page 99 and 100: P.I-06 Resonance frequency shift du
Page 101 and 102: P.I-08 Atomic force microscope cant
Page 103 and 104: Self-assembled Boronitride Nanomesh
Page 105 and 106: P.I-12 Resolution enhanced multifre
Page 107 and 108: P.I-14 Kelvin Force Microscopy Dyna
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Open source scanning probe microsco
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P.I-18 Design of a Variable Tempera
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P.I-20 Besocke style quartz tuning
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P.I-22 A homebuilt low-temperature
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P.I-24 High-Speed Frequency Modulat
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P.I-26 Deciphering Nanoscale Intera
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Dual-Frequency-Modulation AFM Spect
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P.I-30 Internal Resonances and Spat
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Relation between lateral forces and
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M. Teresa Cuberes Ultrasonic Nanoli
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Contacting self-ordered molecular w
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Molecular Structures of Organic Sin
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One and Two Dimensional Structure o
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Temperature-dependent growth of C60
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P.II-07 Atomic Force Microscopy Stu
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Imaging and Detection of Single Mol
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P.II-11 Imaging Schwann Cell NGF Re
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Molecular Resolution Investigation
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Development of Multifrequency High-
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Noncontact observation in liquid wi
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P.II-19 Cantilever Holder Design fo
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P.II-21 Manipulation Mechanism of S
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nc-AFM Investigations of Metal Nano
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P.II-25 Contrast formation on cross
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P.II-27 Non-contact scanning nonlin
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P.II-29 Local Dielectric Spectrosco
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P.II-31 Polarization-dependent elec
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Magnetic Resonance Force Microscopy
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P.II-35 Enhancement of the Exchange
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Abe M. 51,58,92,141 Clerk A. A. 78
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Martinez N. F. 69 Parashar P. 31 Ma
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List of Participants 169
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Ido Shinichiro Kyoto University ido
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Wright Alan University of Maryland
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Ultra-high precision spatial positi
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AD VT-QPlus_ONUS / 09-May Nanotechn
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Surface Analysis Technology Aarhus
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Notes
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NC-AFM 2009 Sessions Monday August
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