STM Studies of Gold Clusters in nanometer-sized graphite pits

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Presentation transcript:

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

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

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

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

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

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

Auger Electron Spectroscopy

Rutherford Backscattering

Auger Results

RBS results

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