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The sound of light: photoacoustics for biomedical applications

The novel technique offers the resolution of light-based imaging and the good depth penetration of sound-based imaging


Photoacoustics is a non-invasive sensing technique for biomedical applications, such as tumor imaging or glucose sensing.

It is based on the photoacoustic principle where incoming light is absorbed by a sample and generates sound waves.

Because it focuses with sound, photoacoustics is able to image deeper in tissue than light-based alternatives.

Hilde Jans and Xavier Rottenberg talk about imec’s work on photoacoustics, including light sources to generate photoacoustic signals and microphones to detect them.