I am running an experiment that uses a microsphere (Diameter ~ 50um) mounted onto the end of an AFM cantilever. I run several experiments in a row, but somewhere during a sequence, the microsphere acquires some non-organic dirt that effects the outcome of the experiment.
Does anyone know - or can suggest - a way to clean the ball while it is still mounted onto the AFM? Or a way to clean the ball at all? We have a UV plasma cleaner, but it is not doing the job.