Manipulating polymer composition to create low-cost, high-fidelity sensors for indoor CO₂ monitoring.

ABSTRACT: Carbon dioxide (CO₂) has been linked to many deleterious health effects, and it has also been used as a proxy for building occupancy measurements. These applications have created a need for low-cost and low-power CO₂ sensors that can be seamlessly incorporated into existing buildings. We report a resonant mass sensor coated with a solution-processable polymer blend of poly(ethylene oxide) (PEO) and poly(ethyleneimine) (PEI) for the detection of CO₂ across multiple use conditions. Controlling the polymer blend composition and nanostructure enabled better transport of the analyte gas into the sensing layer, which allowed for significantly enhanced CO₂ sensing relative to the state of the art. Moreover, the hydrophilic nature of PEO resulted in wate

SUBMITTER: Siefker ZA 

PROVIDER: S-EPMC8225849 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature