New testing system using Janus particles rapidly and accurately detects COVID-19

A research group has developed a new COVID-19 testing system using Janus particles -- microparticles with two sides possessing distinctive molecular properties. These particles are engineered to bind specifically to target antigens, such as viral proteins, creating a low-cost, accurate, and rapid means of testing for viral diseases. The system's versatility means it can potentially be used to test for other diseases and biomarkers linked to other conditions.