Presenting authors are designated with italics . The behavior of the tunneling current with bias voltage depends on the conduction band, valence band, and the existence of a band gap between them. Our experiments show a distinct difference between metals and semiconductors. Current work involves the use of STS to verify the attachment of organic layers to Silicon. OH 45504 STM can be used to provide high resolution images of microscopic structures on surfaces, sometimes at atomic resolution.
Several challenges hinder the easy acquisition of high quality images.
The image quality depends largely on the condition of the tip. We have utilized an electrochemical etching procedure that consistently produces good tips. Several other challenges to imaging silicon in air and their solutions are also discussed. In this research experiment, the goal is to determine the binding strength between a promoter sequence of the T7 bacteria DNA and the T7 RNA polymerase. However, this molecule cannot be synthesized due to the impurities found in one of its essential intermediates.