Surface structure is characterized in terms of the fractal dimension and the topothesy. It is highlighted that the calculations of the topothesy reported in the literature yield totally unrealistic values of this quantity: they vary from 10–3m (the earth's surface) to 10–7nm (ground parts of mechanisms). In the context of scanned-probe microscopy (SPM), it is advisable to adopt another definition of the topothesy. Instead of the cutoff wavelength, which is proportional to the length of the specimen, the definition involves the radial wavelength, which can be evaluated by applying the Fourier transform to the SPM micrograph .
Russian Microelectronics – Springer Journals
Published: Oct 10, 2004
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