Composite number

Physics

Internal medicine

Engineering

Adsorption

Humidity

Meteorology

Composite material

Nanotechnology

Organic chemistry

Chemistry

Materials science

Polypyrrole

Respiratory monitoring

Chitosan

Quartz

Chemical engineering

Polymerization

Polymer

Respiratory system

Medicine

Quartz crystal microbalance

Journal of Materials Chemistry A

This paper reviews the experimental device and results of the CS/PPy QCM humidity sensor. An app was designed to accurately determine the type of breathing and demonstrate the potential respiratory monitoring of patients.

A humidity sensing and respiratory monitoring system constructed from quartz crystal microbalance sensors based on a chitosan/polypyrrole composite film