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Title: Neural network photothermal depth profiling of a heat source distribution. application to water migration in starch sheets
Authors: Glorieux, Christ
Antoniow, JS
Chirtoc, Mihai
Chirtoc, I
Thoen, Jan #
Issue Date: 2001
Publisher: Japan soc analytical chemistry
Series Title: Analytical Sciences vol:17 Special Iss. SI pages:S398-S401
Abstract: The determination of the water migration profile in starch is used as an experimental model system for the depth profiling of heat source distributions. A depth dependent water concentration, which has diffused into the sample during a timed exposure to a humid atmosphere, acts as a specific position dependent heat source. The direct and inverse relation between the water content and the frequency spectrum of a photothermal signal detected by a pyroelectric tranducer in contact with the sample is investigated. The inverse problem is treated by a neural network and a table lookup method. The profile reconstruction is illustrated for simulated and experimental cases.
ISSN: 0910-6340
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
# (joint) last author

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