Nano-Rust: Smart Additive for Autonomous Temperature Control
A new, versatile method for temperature monitoring in materials
The right temperature matters – whether in technical processes, for the quality of food and medicines, or the lifetime of electronic components and batteries. For this purpose, temperature indicators record (un)desired temperature increases that can be read out later. Researchers in the group led by Prof. Dr. Karl Mandel, Professorship for Inorganic Chemistry at FAU, have succeeded in developing a novel temperature indicator in the form of a micrometer-sized particle whose central component is rust. The results of the research have been published in the journal Advanced Materials.
Symbolic image
Unsplash
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
Other news from the department science
These products might interest you
Eclipse by Wyatt Technology
FFF-MALS system for separation and characterization of macromolecules and nanoparticles
The latest and most innovative FFF system designed for highest usability, robustness and data quality
Spinsolve Benchtop NMR by Magritek
Spinsolve Benchtop NMR
Spinsolve is a revolutionary multinuclear NMR spectrometer that provides the best performance
HYPERION II by Bruker
FT-IR and IR laser imaging (QCL) microscope for research and development
Analyze macroscopic samples with microscopic resolution (5 µm) in seconds
Most read news
More news from our other portals
Last viewed contents
SA-Dynamics - Aachen, Germany
Checking authenticity of Earth's smallest, most valuable bits of paper
Oxea announces price increase for Polyols in Europe
New theory explains superconductivity in spun graphene trilayers - The study, carried out by CSIC scientists, lays the foundations for understanding the mechanisms of certain unconventional superconducting materials
Growth of Nanoholes Visible for the First Time Thanks to Helium Scattering - Scientists were able to observe and document the growth of hexagonal boron nitride for the first time
Wood materials make for reliable organic solar cells - Kraft lignin improves the stability in organic solar cells thanks to its ability to form hydrogen bonds that acts as a sort of glue
Cooling towards absolute zero using super-heavy electrons - New quantum material significantly improves adiabatic demagnetization cooling
New mid-infrared laser system could detect atmospheric chemicals
Mystery of microgels solved - The results open up opportunities for new applications in materials and pharmaceutical research
Acoustic tweezers can position tiny objects
Green financing for Verkor’s first battery cell Gigafactory in Dunkirk/France - Landmark project in France
