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The design and development of a scanning tunneling microscope and its use for studying oxygen adsorption on vicinal copper surfaces

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Lloyd, Grongar Wynne Woodliffe (1992) The design and development of a scanning tunneling microscope and its use for studying oxygen adsorption on vicinal copper surfaces. PhD thesis, University of Warwick.

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Official URL: http://webcat.warwick.ac.uk/record=b1415240~S15

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Abstract

A scanning tunneling microscope has been designed and built in the Department of Physics at the University of Warwick which is capable of atomic resolution on metals.

A number of problems associated with the design and manufacture of a Scan­ning Tunneling Microscope (STM) had to be overcome. The design of an ultra high vaccum chamber and its associated power, gas and water supplies. The re­moval of vibrations from the vacuum system. The coarse and fine tip approach that enabled the tunneling regime to be entered without tip crash. The design and construction of a novel sample transfer mechanism that enabled electrical connections to be engaged and disengaged automatically when placing the sam­ple into the STM.

A program of testing, development and calibration, firstly in air and then under vacuum, proved the atomic resolution of the instrument.

Oxygen induced faceting of vicinal copper surfaces was imaged with atomic resolution. A new model for the reconstruction of the Cu(410) terraces is pro­posed.

Item Type: Thesis (PhD)
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Q Science > QH Natural history
Library of Congress Subject Headings (LCSH): Scanning tunneling microscopy, Microscopes -- Design and construction, Adsorption, Oxygen, Copper -- Surfaces
Official Date: November 1992
Dates:
DateEvent
November 1992Submitted
Institution: University of Warwick
Theses Department: Department of Physics
Thesis Type: PhD
Publication Status: Unpublished
Supervisor(s)/Advisor: Woodruff, D. P.
Sponsors: Science and Engineering Research Council (Great Britain)
Extent: 172 leaves : illustrations
Language: eng

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