Building robust optical structures made of darkness

Optical devices and materials allow scientists and engineers to harness light for research and real-world applications, like sensing and microscopy. Federico Capasso's group at the Harvard John A. Paulson School of Engineering ...

'Lab-on-a-chip' can tell the difference between COVID and the flu

Three years into the COVID-19 pandemic, accurate testing remains a challenge, even more so as the virus has mutated over time, becoming more contagious with symptoms that are hard to tell apart from other illnesses. A new ...

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