1. STM Studies of Gold Clusters in nanometer-sized graphite pits
Ulai Noomnarm
University of Florida

2. Nanometer-sized Pit Applications
templates for microelectronic devices
immobilization for STM imaging

3. Scanning Tunneling Microscopy
Based on quantum mechanical tunneling between classically forbidden areas

4. Pit Formation Oxidation ® circular monolayer pits
diameter dependent on time, temperature, O2 partial pressure

5. Experiment Prepare gold source Dose with Ar ions and heat
Deposit gold into pits
Examine with STM

6. Gold Source Preparation
1 Develop test chamber
2 Check purity with Auger Electron Spectroscopy (AES)
3 Determine thickness with Rutherford Backscattering (RBS)

7. Auger Electron Spectroscopy

8. Rutherford Backscattering

9. Auger Results

10. RBS results

11. Conclusions Prepared and calibrated a clean gold source
Tested and calibrated ion gun
Prepared furnace for heating