Blu-ray discs are great for watching movies, but the technology within them and the players that spin them has been harnessed for pathogen detection by a team of Spanish scientists. The Blu-ray discs had a layer of microarrays applied to their surface where antibody reactions and signal amplification takes place. The discs were then placed into a Blu-ray player, the laser of which was used to measure the optical properties of each node within the microarrays that correlated to a successful reaction or not.
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