TABLE OF CONTENTS

ABSTRACT

I. INTRODUCTION
            Historical Development
            Operating Mechanism
            Tunneling
            Constant Height and Constant Current Imaging

II. ATOMIC SCALE TUNNELING AND IMAGING
            Ballistic Transport and Tunneling
            Modeling the Tunneling Current
            Local Density of States (LDOS) Topography
            Lateral Resolution Models

III. DESIGN AND CONSTRUCTION
            Piezoelectric Transducers
            Tunneling Probe
            Mechanical Design
                    Mechanical Design Constraints
                    Scanner Design
                    Coarse Sample Positioning
                    Vibration Isolation
            Electrical Design
                    Electrical Design Constraints
                    Electrical Noise
                    Transimpedance Amplifier
                    Piezoelectric Amplifiers
                    Power Supplies
            Computer Control and Software
                    Data Acquisition Card
                    DSP Feedback and Control System
                    DSP Software
                    User Interface and Image Display

IV. CARBON NANOTUBES
            Properties
            Fabrication Methods

V. RESULTS

VI. CONCLUSIONS

REFERENCES
 
PICTURES
 
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April 5, 1998