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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.
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.
What do coffee, red wine and ink have in common? The stubborn stains they leave behind. Anyone who has ever knocked over a cup of coffee will know that coffee dries in an unusual pattern, the stain is lighter at the center but it gets darker around the perimeter, an effect known as the coff ... more
By capsule through the bloodstream
Bacteria in the intestine pack a wide spectrum of their biomolecules into small capsules. These are transported via the bloodstream to various organs in the body and even absorbed and processed by nerve cells in the brain. This has now been shown for the first time by a team of researchers ... more
How Cells Correctly Choose Active Genes
It is essential for cells to control precisely which of the many genes of their genetic material they use. This is done in so-called transcription factories, molecular clusters in the nucleus. Researchers of Karlsruhe Institute of Technology (KIT), Friedrich-Alexander-Universität Erlangen-N ... more
Transfer of aroma compounds into breast milk
“We are what we eat.” In a way, this quote by the German philosopher Ludwig Feuerbach (1804–1872) also applies to what we feed our offspring: the aroma profile of breast milk reflects a mother's eating habits [1, 2] and can thus influence the preferences of her children ... more
Colorful off-odors in artists’ paints
Acrylic-based paints are among the most frequently used by artists. Although they can be produced on a water basis and with low levels of volatile substances, they often still possess a strong inherent smell. However, no targeted studies have as yet been conducted to identify odor-active su ... more
New Trends in Computer-Aided Drug Design
Computer-Aided Drug design (CADD) is not new. The Journal of Computer-Aided Molecular Design (Springer) was founded in 1987, when computers in the worldwide top 500 were slower than today’s smart phones. This makes the field a quarter of a century old. Generally, scientific disciplines of t ... more
Helene Loos studied food technology at the University of Hohenheim and completed her doctorate in food chemistry at the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) in 2015. During her doctoral studies, she investigated the aroma composition of breast milk and the behavioral resp ... more
Diana Owsienko, born in 1994, studied food chemistry at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) in Erlangen from 2013 to 2017 and worked on her final scientific thesis at the Fraunhofer Institute for Process Engineering and Packaging (IVV) in Freising from 2017 to 2018. In 2 ... more
Nadine Goldenstein studied Marine Environmental Sciences at the University of Bremen, Germany. Subsequently she worked as a scientist in Organic Biogeochemistry at MARUM, Bremen, where she concentrated her research activities on the investigation of microbial metabolic processes, with a foc ... more
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