The Materials Preparation Laboratory provides facilities for sample fabrication, processing, patterning and characterization. In response to demands in nanofabrication and synthesis, we have more tightly coupled sample fabrication and characterization by incorporating the previously separate Spectroscopic Facility into the Prep Lab. Key capabilities include: a cleanroom area that houses a Digital Instruments Nanoscope IIIa AFM/STM with capabilities for contact and tapping AFM imaging modes, STM, electro-chemistry, and an environmental sample chamber for in-situ AFM imaging up to +250 °C.