Surface electronic structure of the HOPG, Au, and 1-Butanethiol films on HOPG under ambient conditions

Investigating semiconductor/metal and their thin film surfaces usually done under UHV conditions. Although the UHV conditions bring inarguable advantages in taking measurements, the systems thus created in many instances must work in the atmosphere. Therefore it would be prudent on some occasions to obtain this information in systems while under normal ambient conditions which would provide a direct reflection of how they work. This is an attempt to investigate the localized surface bands via Scanning Tunneling Spectroscopy (STS) under the ambient conditions. I have used Nanoscience Instruments NAIO Scanning Tunneling Microscope (STM) to investigate and find the surface electronic properties of SPI supplies fresh cleaved Grade V-1 HOPG surfaces and Au magnetron sputter deposited on fresh cleaved HOPG under varying conditions. 1-Butanethiol films were self-assembled on fresh cleaved HOPG. A comparative discussion of the results will follow with the measurement of Localized Density of States (LDoS).