Dual-channel microcantilever heaters for volatile organic compound detection and mixture analysis.

ABSTRACT: We report on novel microcantilever heater sensors with separate AlGaN/GaN heterostructure based heater and sensor channels to perform advanced volatile organic compound (VOC) detection and mixture analysis. Operating without any surface functionalization or treatment, these microcantilevers utilize the strong surface polarization of AlGaN, as well as the unique heater and sensor channel geometries, to perform selective detection of analytes based on their latent heat of evaporation and molecular dipole moment over a wide concentration range with sub-ppm detection limit. The dual-channel microcantilevers have demonstrated much superior sensing behavior compared to the single-channel ones, with the capability to not only identify individual VOCs with much higher specificity, but also uniquel

SUBMITTER: Jahangir I 

PROVIDER: S-EPMC4933970 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature