Portable 3D-printed umbrella photoacoustic cell for trace gas detection

Abstract

We purpose a novel portable 3D-printed umbrella photoacoustic (PA) cell, to the best of our knowledge, for trace gas detection. Its simulation and structural optimization were performed via finite element analysis using COMSOL software. We investigate the factors affecting the PA signals using both experimentation and theory. By measuring methane, a minimum detection limit of 5.36 ppm (signal-to-noise ratio, 223.8) with a lock-in time of 3s was achieved. The proposed miniature umbrella PA system indicates the potential for a miniaturized and low-cost trace sensor.

Programmable and Modularized Gas Sensor Integrated by 3D Printing

“…The relationship between sound pressure distribution within the cell and the dimensions of the umbrella-shaped photoacoustic cell was simulated and optimized using COMSOL software. 194 Subsequently, 3D printing technology can be employed to materialize the optimized structures into applicable components. In a study by Zhang et al, enhancements were made in optimizing the thermal viscosity and heat loss in a resonant photoacoustic cell, which was crucial for photoacoustic spectroscopy acquisition in gas detection.…”

“…In Yin’s study, an umbrella-structured photoacoustic cell was investigated. The relationship between sound pressure distribution within the cell and the dimensions of the umbrella-shaped photoacoustic cell was simulated and optimized using COMSOL software . Subsequently, 3D printing technology can be employed to materialize the optimized structures into applicable components.…”