Abstract
A 3D printing technique was introduced to a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor and is reported for the first time. The acoustic detection module (ADM) was designed and fabricated using the 3D printing technique and the ADM volume was compressed significantly. Furthermore, a small grin lens was used for laser focusing and facilitated the beam adjustment in the 3D-printed ADM. A quartz tuning fork (QTF) with a low resonance frequency of 30.72 kHz was used as the acoustic wave transducer and acetylene (C2H2) was chosen as the analyte. The reported miniaturized QEPAS trace gas sensor is useful in actual sensor applications.
Highlights
Due to the advantages of highly sensitive, non-invasive, in situ, real-time observations, laser gas sensing methods have attracted a wide range of interest in recent years and are extensively used for environment monitoring, combustion diagnosis, biomedical science, and industrial process control [1,2,3]
Fabrication.several parts fabricated as anasentire device
A 3D printing technique was introduced to a quartz-enhanced photoacoustic spectroscopy (QEPAS)-based trace gas sensor for
Summary
Due to the advantages of highly sensitive, non-invasive, in situ, real-time observations, laser gas sensing methods have attracted a wide range of interest in recent years and are extensively used for environment monitoring, combustion diagnosis, biomedical science, and industrial process control [1,2,3]. Among these methods, photoacoustic spectroscopy (PAS) is one of the most attractive gas sensor techniques, and it is based on the photoacoustic (PA) effect. The size of a typical photoacoustic resonator is relatively large [4]
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