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Integrated matrix of responses to tree types of chemical vapors. Each column corresponds to a particular vapor: acetone, ethanol, or toluene. Each row corresponds to a particular type of sensor, which is determined by the type of metal nanoparticles in the coating. Consequent peaks correspond to tree different partial vapor pressures (100, 130, and 160 ppm). The sensor response is measured as conductance normalized with respect to a baseline signal level, when no vapor is present.
