‘The Photoacoustic Effect’, and indeed it is real – first discovered in 1880 by Alexander Bell! The pulsing light is heating the microphone element and causing it to vibrate along with the ...

Instead of using bulky resonant gas cells for acoustic amplification or large microphones for higher acoustic sensitivity like traditional PAS systems, the all-fiber photoacoustic spectrometer ...

A team at South Korea's Pohang University of Science and Technology (POSTECH) has developed a way to process low-resolution label-free photoacoustic images into high-resolution virtually stained ...

proposed a gas sensing technology named quartz-enhanced photoacoustic spectroscopy (QEPAS), which uses a quartz tuning fork (QTF) instead of a microphone to detect the acoustic waves compared to ...

Conversely, mid-infrared photoacoustic microscopy (MIR-PAM) allows for label-free imaging, preserving cell integrity. Yet, its reliance on longer wavelengths limits spatial resolution, making it ...

A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2025.240275 , discusses A highly sensitive laser gas sensor based on a four-prong ...

A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2025.240275, discusses A highly sensitive laser gas sensor based on a four-prong ...