Pinpointing the Rhythm of Tiny Plastics
Turning microplastics Raman spectroscopy into a public sonification experience -- the Microplastics DJ.
A spectrum no one outside the lab could read.
Under the $2.2M NOAA MOSAIC partnership, Haoran Wei's lab uses Raman spectroscopy to identify microplastics -- each particle returning a precise spectral fingerprint of what it's made of. The science is rigorous and the data is beautiful. It is also, to a non-specialist, a wall of peaks on a chart.
Public engagement asked a harder question than "can we explain this?" It asked: can a person feel the difference between a fragment of polyethylene and a thread of polyester -- without a single equation?
If you can't read a spectrum, hear it.
As Co-PI on the engagement work, Travis Tangen designed a sonification: a mapping that turns each plastic's spectral fingerprint into sound. Peak positions become pitches, intensities become rhythm and timbre. Every polymer gets its own signature riff -- and the audience gets an instrument.
We called it the Microplastics DJ. Visitors mix real spectra from the Wei lab into a track, hearing the contamination in a water sample resolve into a beat they can actually follow. The science doesn't get simpler; the doorway in gets wider.
The data never changed. We just gave it a rhythm people could stand inside.
Rigorous research, in public, on the ear.
The Microplastics DJ became a portable public-engagement experience: faithful to the spectroscopy, yet open to anyone willing to listen. It connects a federally funded research program to the publics who live downstream of its findings.
It's one tile in the MOSAIC picture -- and a model for translating instrument-grade science into engagement that doesn't dumb anything down.