If mechanoluminescent materials are subjected to external mechanical stress, they emit visible or invisible light. Such excitation can occur due to bending or gentle pressure, for example, but also completely contact-free through ultrasound. In this way, the effect can be triggered remotely and light can be brought to places that normally tend to be in the dark, for example in the human body. If the ultrasound treatment is to be used at the same time to generate local heat, it is important in such a sensitive environment to observe closely the temperatures that occur. Material scientists at Friedrich Schiller University Jena, Germany have now developed a mechanoluminescent material that can not only be used to generate a local heat input by means of ultrasound, but also provides feedback on the local temperature at the same time. They report on their research results today in the journal Advanced Science.
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Source: Phys.org