➀ Researchers have developed an ultra-sensitive infrared detector for molecular detection based on graphene and phonon polaritons. The device transforms infrared light into 'nanolight', enhancing the vibrational fingerprint signal. ➁ The novel technology offers potential for miniaturization and on-chip applications, including medical diagnostics and environmental monitoring. ➂ Room-temperature operation could enable integration into smartphones and wearable electronics, revolutionizing molecular identification.