Giulia Scamporrino
Design, fabrication and evaluation of silicon tip chips for reverse tip sample scanning probe microscopy.
Rel. Matteo Cocuzza. Politecnico di Torino, Corso di laurea magistrale in Nanotechnologies For Icts (Nanotecnologie Per Le Ict), 2021
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Abstract
Recently, a new and promising scanning probe microscopy (SPM) configuration called reverse tip sample (RTS) SPM has been developed at IMEC to overcome the main limitations of the classical SPM approach. In RTS SPM, the classical position of tip and sample is switched: the tip is placed on the stage (where normally the sample is located) and the sample is placed at the cantilever end (where the tip is commonly located). The major advantage of this novel approach is the possibility to substitute a single tip with a chip containing hundreds to thousands of tips. Further advantages of this promising method are: rapid and seamless tip switching within seconds (typically 10 min in the classical configuration), the potential to combine different measurement techniques requiring each a different tip and measure quasi simultaneously with different tips for improved data statistics.
So far, only pyramidal diamond tips made by the common moulding approach have been developed and used for RTS SPM
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