Nanowerk June 16, 2021
An object can be recycled responsibly only if all raw materials and intermediate products used for manufacturing it is marked unambiguously using a tamper-proof method. Inspired by the variation of a musical ensemble yielding distinguishable overtones, researchers in Germany have developed a magnetic particle-based toolbox that provides more than 77 billion different magnetic codes, adjustable in one single particle, that can be read out unambiguously, easily, and quickly. The variation of the supraparticle composition alters their magnetic overtones. By minimizing magnetic interactions, customizable signals are spectrally decoded by the simple method of magnetic particle spectroscopy. The research findings are a breakthrough for unexploited labeling applications and pave the way towards materials intelligence. A magnetic particle marker like this could improve quality control and reduce the number of counterfeit products…read more. Open Access TECHNICAL ARTICLEÂ
An intelligent magnetic particle with a unique code turns arbitrary objects into communicating items…. Credit: Small, 03 June 2021Â