The scanning tunnel microscope (STM) technique was used to investigate the effect of preparative variables on the degree of aggregation of platinum clusters on a highly oriented pyrolytic graphite (HOPG). Two methods of depositing Pt were investigated: impregnation and vapor deposition. The diameters of the Pt clusters formed on an oxidized HOPG sample prepared by impregnation range from 50 to 500 Å. The clusters were apparently concentrated along the steps and rough patches on the surface. The sizes of the Pt clusters formed by vapor deposition range from 20 to 50 Å. However, the heights of the Pt clusters formed by these two methods are similar and range from about 10 to 40 Å. Distribution of Pt cluster size was formed to be depended on impregnated platinum loading on an oxidized HOPG surface prepared by impregnation. The platinum clusters observed were not mobile on an oxidized HOPG surface during scanning, and STM images were very reproducible.
Skip Nav Destination
Article navigation
March 1992
This content was originally published in
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena
Research Article|
March 01 1992
Investigation by scanning tunneling microscopy of the effect of preparative variables on the degree of aggregation of platinum on highly oriented pyrolytic graphite
Sangho Lee;
Sangho Lee
Department of Chemical Engineering, Wayne State University, Detroit, Michigan 48202
Search for other works by this author on:
Haryani Permana;
Haryani Permana
Department of Chemical Engineering, Wayne State University, Detroit, Michigan 48202
Search for other works by this author on:
K. Y. Simon Ng
K. Y. Simon Ng
Department of Chemical Engineering, Wayne State University, Detroit, Michigan 48202
Search for other works by this author on:
J. Vac. Sci. Technol. B 10, 561–565 (1992)
Article history
Received:
July 24 1991
Accepted:
December 17 1991
Citation
Sangho Lee, Haryani Permana, K. Y. Simon Ng; Investigation by scanning tunneling microscopy of the effect of preparative variables on the degree of aggregation of platinum on highly oriented pyrolytic graphite. J. Vac. Sci. Technol. B 1 March 1992; 10 (2): 561–565. https://doi.org/10.1116/1.586413
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Future of plasma etching for microelectronics: Challenges and opportunities
Gottlieb S. Oehrlein, Stephan M. Brandstadter, et al.
Machine learning driven measurement of high-aspect-ratio nanostructures using Mueller matrix spectroscopic ellipsometry
Shiva Mudide, Nick Keller, et al.
Transferable GeSn ribbon photodetectors for high-speed short-wave infrared photonic applications
Haochen Zhao, Suho Park, et al.
Related Content
Cluster cleaned HOPG by XPS
Surf. Sci. Spectra (October 2017)
Scanning tunneling microscopy of Kish graphite and highly oriented pyrolytic graphite in air
J. Vac. Sci. Technol. A (March 1988)
Scanning tunneling microscopy of liquid crystals, perylene‐tetracarboxylic‐dianhydride, and phthalocyanine
J. Vac. Sci. Technol. B (May 1994)
Single molecule spectrum of rhodamine 6G on highly oriented pyrolytic graphite
Appl. Phys. Lett. (April 2005)
Surface superstructure of Ar + -bombarded highly oriented pyrolytic graphite during recrystallization
J. Vac. Sci. Technol. B (November 1999)