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Tomographic imaging and scanning thermal microscopy: thermal impedance tomography

By R.H. [] Smallwood, P. Metherall, D. Hose, M. Delves, H. Pollock, A. Hammiche, C. Hodges, V. Mathot and P. Willcocks


The application of tomographic imaging techniques developed for medical applications to the data provided by the scanning thermal microscope will give access to true three-dimensional information on the thermal properties of materials on a mm length scale. In principle, the technique involves calculating and inverting a sensitivity matrix for a uniform isotropic material, collecting ordered data at several modulation frequencies, and multiplying the inverse of the matrix with the data vector. In practice, inversion of the matrix in impractical, and a novel iterative technique is used. Examples from both simulated and real data are given

Year: 2002
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