Researchers create the world's smallest Christmas record

[Still Waters]

Measuring only 40 micrometers in diameter, researchers at DTU Physics have made the smallest record ever cut. Featuring the first 25 seconds of the Christmas classic "Rocking Around the Christmas Tree," the single is cut using a new nano-sculpting machine—the Nanofrazor—recently acquired from Heidelberg Instruments.

The Nanofrazor can engrave 3D patterns into surfaces with nanoscale resolution, allowing the researchers to create new nanostructures that may pave the way for novel technologies in fields such as quantum devices, magnetic sensors and electron optics.

https://phys.org/news/2022-12-world-smallest-christmas.html