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​Researchers demonstrate on-chip phonon-enhanced IR near-field detection of molecular vibrations 

A team of Spain-based researchers has developed a highly sensitive detector for identifying molecules via their infrared vibrational “fingerprint”. The new detector converts incident infrared light into ultra-confined “nanolight” in the form of phonon polaritons within the detector´s active area. This mechanism serves two crucial purposes: it improves the detector’s overall sensitivity and enhances the vibrational fingerprint of nanometer-thin molecular layer placed on top of the detector, allowing this molecular fingerprint to be more easily detected and analyzed. 

The compact design and room-temperature operation of the device hold promise for developing ultra-compact platforms for molecular and gas sensing applications.

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A team of Spain-based researchers has developed a highly sensitive detector for identifying molecules via their infrared vibrational “fingerprint”. The new detector converts incident infrared light into ultra-confined “nanolight” in the form of phonon polaritons within the detector´s active area. This mechanism serves two crucial purposes: it improves the detector’s overall sensitivity and enhances the vibrational fingerprint of nanometer-thin molecular layer placed on top of the detector, allowing this molecular fingerprint to be more easily detected and analyzed. 
The compact design and room-temperature operation of the device hold promise for developing ultra-compact platforms for molecular and gas sensing applications. 

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