TITLE

Color mapping by scanning tunneling microscopy: Chemical analysis of metal surfaces

AUTHOR(S)
Downes, Andrew; Guaino, Philippe; Dumas, Philippe
PUB. DATE
January 2002
SOURCE
Applied Physics Letters;1/21/2002, Vol. 80 Issue 3, p380
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present true color maps of a metal surface imaged by scanning tunneling microscopy (STM). Light emission spectra were acquired at each imaging pixel, and converted into a real color map. A rough gold film was shown to exhibit minimal color changes across the sample, so spectra are dependent on material and not sample geometry, due to a small radius tip. A larger tip was still able to distinguish between Ag and Cu clusters with ∼10 nm resolution, despite the onset of geometric effects. We conclude that color mapping represents an ideal way of identifying metals in STM on the nanometer scale. © 2002 American Institute of Physics.
ACCESSION #
5884260

 

Related Articles

  • Quantitative characterization of physical processes during nanometer surface modification. McBride, S. E.; Wetsel, G. C. // Applied Physics Letters;12/24/1990, Vol. 57 Issue 26, p2782 

    A scanning tunneling microscope developed for microscopy, spectroscopy, and lithography has been used for modification of metallic surfaces exposed to the atmosphere. We report here the first quantitative characterization of a submicrometer area of a metallic sample before and after pulsing the...

  • Heat transfer between two metallic surfaces at small distances. Xu, J.-B.; Läuger, K.; Möller, R.; Dransfeld, K.; Wilson, I. H. // Journal of Applied Physics;12/1/1994, Vol. 76 Issue 11, p7209 

    Presents a study that examined the heat transfer between two metallic surfaces at small distances. Proximity effects in radiative heat transfer; Experiments on proximity effects; Heat transfer by the proximity effects between needle and sample of a scanning tunneling microscope under good vacuum.

  • Variation of the thermovoltage across a vacuum tunneling barrier: Copper islands on Ag(111). Rettenberger, A.; Baur, C. // Applied Physics Letters;8/28/1995, Vol. 67 Issue 9, p1217 

    Investigates the thermovoltage variation across the tunneling barrier of a scanning tunneling microscope operated in ultravacuum. Develops a method to distinguish between different metals of a heterogeneous metallic surface; Application of the method to copper islands on the silver(111)...

  • Nanostructure fabrication using laser field enhancement in the near field of a scanning.... Jersch, J.; Dickmann, K. // Applied Physics Letters;2/5/1996, Vol. 68 Issue 6, p868 

    Examines the fabrication of nanostructures using laser field enhancement. Combination of scanning tunneling microscope and laser excitation; Modification of the metal surface in air; Demonstration of the process on gold and gold/palladium substrates; Transfer of the tip atoms to the substrate;...

  • A theoretical model of scanning tunneling microscopy: Application to the graphite (0001) and Au(111) surfaces. Ou-Yang, Hui; Källebring, Bruno; Marcus, R. A. // Journal of Chemical Physics;5/1/1993, Vol. 98 Issue 9, p7565 

    An expression for the scanning tunneling microscopy (STM) current between the tip and sample is presented using first-order perturbation theory for a two-Hamiltonian formalism (‘‘reactants’’ and ‘‘products’’). The calculated STM current depends...

  • Wavelet Transform as a Method for Studying the Fractal Properties of the Surface of Amorphous Metals under Mechanical Load. Hilarov, V. L.; Korsukov, V. E.; Butenko, P. N.; Svetlov, V. N. // Physics of the Solid State;Oct2004, Vol. 46 Issue 10, p1868 

    The effect of mechanical tension on the multifractal characteristics of the lateral surface of an Fe77Ni1Si9B13 amorphous alloy is studied by scanning tunneling microscopy (STM). It is established that, at small loads, the surface is smoothed out much as a crumpled sheet of paper is smoothed out...

  • Quantum transport in an atom-sized bridge between a metal surface and a tip of a scanning... Kawahito, Y.; Kasai, H. // Journal of Applied Physics;1/15/1999, Vol. 85 Issue 2, p947 

    Presents information on a study which investigated the electron transport in an atom-sized bridge between a metal surface and a a tip of a scanning tunneling microscope with the aid of the Hubbard Hamiltonian model. Effects of the intrasite Coulomb interaction at finite temperatures on the...

  • Spin-Resolved STM for a Kondo Impurity. Seridonio, A. C.; Souza, F. M.; Shelykh, I. A. // Journal of Superconductivity & Novel Magnetism;Jan2010, Vol. 23 Issue 1, p149 

    We investigate the bias dependence of the tunneling conductance between a spin-polarized (SP) tip of a scanning tunneling microscope (STM) and a metallic surface with a magnetic impurity. The Fano–Kondo interference between the conduction channels tip-host and tip-impurity is considered....

  • High-temperature scanning tunneling microscope with a novel sample heater and interchangeable scan heads. McCann, Lowell I.; Smalley, Richard M.; Dubson, M. A. // Review of Scientific Instruments;Aug1994, Vol. 65 Issue 8, p2519 

    A UHV-compatible, high-temperature scanning tunneling microscope (STM) with a sample stage incorporating a Si wafer as a resistive heater is described. The design allows for rapid interchange of scanning tubes so that the maximum scan size can be varied. The thermal stability of the microscope...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics