Electronic Nose Based on Nanomaterials: Issues, Challenges, and Prospects

Figure 9

The schematic of the sensing process. The protein solutions or cell suspensions (10 μL) are directly added on ceramic heaters sintered with catalytic nanomaterials. Then the proteins or cells are trapped onto the surface of nanomaterials after the volatilization of water. When the temperature is raised to 205°C, analytes are thermally oxidized with the generation of distinct TCL. After TCL decays, remains of analytes are wiped out from the surface of nanomaterials at 500°C. Published with permission from Kong et al. [131], Copyright © 2013 American Chemical Society.