Nano-Rust: Smart Additive for Autonomous Temperature Control
A new, versatile method for temperature monitoring in materials
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The new temperature indicator has decisive advantages over previous indicators: its small size means it can be flexibly applied and the fact it is made of readily available materials makes it inexpensive to manufacture. What makes it truly outstanding, however, is the modular structure of the particles made of polymers and iron oxide as well as the magnetic readout process. The modular design allows the indicator to be tailored for a specific application. The magnetic readout method allows the stored information of the temperature indicators to be read out even from the depths of a dark object or behind an opaque coating. This is not possible with many currently used indicators. It is important to note that no real-time temperature monitoring is performed as with a thermometer. Instead, the temperature indicator stores the maximum temperature ever reached in the past, ranging from 40 to 170 °C. This is particularly suitable for tracing the temperature history of a material, which cannot be tracked with ordinary thermometers without a memory unit.
Original publication
Recording Temperature with Magnetic Supraparticles; Jakob Reichstein, Stephan Müssig, Hannes Bauer, Susanne Wintzheimer, Karl Mandel; Advanced Materials; 2022
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Original publication
Recording Temperature with Magnetic Supraparticles; Jakob Reichstein, Stephan Müssig, Hannes Bauer, Susanne Wintzheimer, Karl Mandel; Advanced Materials; 2022
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