An electronic nose employing dual-channel odour separation columns with large chemosensor arrays for advanced odour discrimination

Biomimetic-based odor and taste sensing systems to food quality and safety characterization: An overview on basic principles and recent achievements

“…Some of these innovative achievements include the artificial olfactory microsystem (e-mucosa). This is a new type of electronic nose that mimics nasal chromatograph effect and have wealthier information content and so will enable a higher level of discrimination than present electronic nose systems (Che Harun et al, 2009aHarun et al, , 2009bTaylor et al, 2009).…”

Applying Convolution-Based Processing Methods To A Dual-Channel, Large Array Artificial Olfactory Mucosa

“…The dual-channel artificial olfactory mucosa [7] has been realised by combining three large chemoresistive sensor arrays, employing composite polymer materials as the sensing layer (carbon black, Cabot corp. USA, mixed with 24 combinations of differing sensing polymers), and two plastic polymercoated columns (Figure 3). Figure 2 shows the general arrangement of the system showing chemosensor arrays and two retentive columns.…”

“…The signals produced by novel instruments mimicking this effect [6,7] require a new approach to signal processing so that this information-rich environment can be fully exploited. One such method has been reported, where the spatio-temporal signals from matching spatially-separated sensors are combined and analysed using a convolution method [8].…”

Guard Cell and Tropomyosin Inspired Chemical Sensor

“…A metal oxide or conductive polymer that changes resistance in the presence of an odorant, atop electrodes, directly mimics the functionality and morphology of the olfactory epithelium thin mucus layer [13,37]. A similar attempt to closely mimic the functionally and morphology is the e-mucosa that combines chemoresistive sensor arrays with odor separation columns [38]. This approach enhances odor discrimination by employing multiple stages of sensing, which provide spatio-temporal data that are analyzed using a probabilistic neural network.…”