Fig. 6
From: Information Visualization to Enhance Sensitivity and Selectivity in Biosensing
a Illustrative diagram of the experimental setup used in impedance spectroscopy measurements for e-tongues. b Sammon’s mapping plot of data with standardization for the electrical impedance data obtained with the PAH/phytase sensing unit. The color represents different samples of phytic acid, in addition to the buffer. The axes are not labeled, as the relative distances give the degree of dis(similarity) among the samples. Reproduced with permission from Refs. [8, 38], respectively