Towards a Miniaturized Photoacoustic Sensor for Transcutaneous CO₂ Monitoring.

ABSTRACT: A photoacoustic sensor system (PAS) intended for carbon dioxide (CO₂) blood gas detection is presented. The development focuses on a photoacoustic (PA) sensor based on the so-called two-chamber principle, i.e., comprising a measuring cell and a detection chamber. The aim is the reliable continuous monitoring of transcutaneous CO₂ values, which is very important, for example, in intensive care unit patient monitoring. An infrared light-emitting diode (LED) with an emission peak wavelength at 4.3 µm was used as a light source. A micro-electro-mechanical system (MEMS) microphone and the target gas CO₂ are inside a hermetically sealed detection chamber for selective target gas detection. Based on conducted simulations and measurement results in a laboratory set

SUBMITTER: El-Safoury M 

PROVIDER: S-EPMC10820682 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature