This may be a bit of a silly question, but I'm wondering if it is feasible to design a freshman level lab experiment using a STM? For example, lets say the lab is simply intended to give the students a better appreciation of how a STM operates within the framework of quantum mechanics, with the "cool" factor being that the students will produce an image of some material at the atomic level on the lab PC. Is such an experiment feasible? I suppose I'm asking in terms of time requirements - how long does it take to produce a coherent image on a PC using a STM? Say the students have 3 hours of lab time - what sort of simple experiments could be performed in this amount of time?