A Diamond Heater‐Thermometer Microsensor for Measuring Localized Thermal Conductivity: A Case Study in Gelatin Hydrogel(Advanced Optical Materials 34/2024)

Localized Thermal Conductivity Measurement The cover image shows a hybrid diamond–silicon pillar micro-sensor with a decoupled all-optical temperature control and readout method for localized thermal conductivity measurement in hydrogels. The decoupling of the heating and sensing lasers can minimize the crosstalk between them. Thermal conductivity is measured using a steady-state thermometry strategy based on the laser heating effect. This novel sensor and sensing strategy demonstrate significant advancements in micro-scale thermometry. For further details, see article number 2401232 by Zhiqin Chu and co-workers.