Smith, S. T. (1987) Mechanical systems in nanometre metrology. PhD thesis, University of Warwick.

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Abstract

The work reported in this thesis was carried out in the School of Engineering Science,
University of Warwick, between October 1984 and October 1987.
Chapter 1 contains a review of recent developments in instrumentation that require both
manipulation and measurement over the range 0.1-100nm. The instruments considered are the
Scanning Tunnelling Microscope (STM), Stylus techniques, X-ray interferometry and x-ray
microscopy. The rest of the thesis presents the design and assessment of a novel STM incorporating
an X-ray interferometer, an ultra-high precision stylus measuring instrument and an x-ray
microscope two axis specimen translation stage.
Chapters 2 and 3 present an assessment of different mechanisms for the production of rectilinear
motions having parasitic errors of better than mm. Theoretical and experimental investigations
into monolithic parallel spring systems based on a notch type hinge and long range slideways
based on a polymeric bearing sliding on a polished glass prism are presented. Optimisation
of a soleniod magnet force transducer is presented as a drive technique for the former device,
whilst a mechanically non-influencing feedscrew drive is described for the latter system.
A stylus based measuring instrument, called "Nanosurf 2", that incorporates the polymeric
slideway is presented in chapter 4. The performance of this system has been assessed and the
results are presented in the following chapter.
The linearity and accuracy of an electromagnetically driven, single crystal silicon, monolithic
spring make it a suitable for use as the translation mechanism in a Scanning Tunnelling
Microscope. Consequently, a three-axis spring has been constructed to generate the translations
required for imaging. An X-ray interferometer is built into the probe axis to facilitate absolute
calibration. This work is preceeded by an investigation into the generation of complex shapes in
this brittle material.
Finally, the current status of this work is reported with the presentation of initial experimental
results.

Item Type:	Thesis (PhD)
Subjects:	T Technology > TJ Mechanical engineering and machinery
Library of Congress Subject Headings (LCSH):	Measurement -- Methodology, Mechanical engineering -- Equipment and supplies
Official Date:	1987
Dates:	Date Event 1987 Submitted
Institution:	University of Warwick
Theses Department:	School of Engineering
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Bowen, D. Keith (David Keith), 1940- ; Chetwynd, D. G. (Derek G.), 1948-
Sponsors:	National Physical Laboratory (Great Britain)
Extent:	[viii], 226, [15] leaves
Language:	eng

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