Laser-assisted thermoelectric-enhanced hydrogen peroxide biosensors based on AgSe nanofilms for sensitive detection of bacterial pathogens.

Thermoelectric (TE) materials can convert the heat produced during biochemical reactions into electrical signals, enabling the self-powered detection of biomarkers. In this work, we design and fabricate a simple AgSe nanofilm-based TE biosensor to precisely quantify hydrogen peroxide (HO) levels in liquid samples. A chemical reaction involving horseradish peroxidase, ABTS and HO in the specimens produces a photothermal agent-ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) free radical, which triggers the heat fluctuations at the TE sensor through the photo-thermal effect, eventually enabling the sensing of HO.

Flexible AgSe Thermoelectric Films Enable the Multifunctional Thermal Perception in Electronic Skins.

Skin is critical for shaping our interactions with the environment. The electronic skin (E-skin) has emerged as a promising interface for medical devices to replicate the functions of damaged skin. However, exploration of thermal perception, which is crucial for physiological sensing, has been limited.