We review recent efforts to detect small numbers of nuclear spins using magnetic resonance force microscopy. Magnetic resonance force microscopy (MRFM) is a scanning probe technique that relies on the mechanical measurement of the weak magnetic force between a microscopic magnet and the magnetic moments in a sample. Spurred by the recent progress in fabricating ultrasensitive force detectors, M...

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The availability of reliable characterisation tools for carbon films down to a few atomic layers’ thickness is one of the most decisive factors for technology development and production. In particular, non-destructive techniques are preferred. This chapter reviews the use of x-ray reflectivity, surface acoustic waves, and Raman spectroscopy to characterise carbon films in terms of density, thic...