27/06/2025
**Photoacoustic Spectroscopy (PAS)** is a powerful analytical technique used to detect and measure the concentration of chemical substances through the generation of acoustic waves as a result of light absorption. First observed in the 1880s by Alexander Graham Bell, the photoacoustic effect remained a scientific curiosity for decades. With the advent of lasers and sensitive microphones, PAS has emerged as a vital tool in modern gas sensing, environmental monitoring, biomedical analysis, and material characterization.
Photoacoustic Spectroscopy (PAS) is a powerful analytical technique used to detect and measure the concentration of chemical substances through the generation of acoustic waves as a result of light absorption. First observed in the 1880s by Alexander Graham Bell, the photoacoustic effect remained a....