Nanowerk December 5, 2024 An international team of researchers (Republic of Korea, USA – University of Chicago) developed a scalable and cost-efficient method for producing multiplexed plasmonic colors by in situ photoreducing AgNPs within microgel architectures with controlled porosity. They used digital micro-mirror device (DMD)-based flow microlithography system combined with a programmable dithering-mask technique to synthesize shape or barcoded microparticles with large-scale, high-resolution images embedded with hidden multiplexed plasmonic colors. Quantitative agreement was achieved between chemically encrypted and optically decrypted plasmonic colors using a deep learning classifier. According to the researchers their work paves a new way for hidden data […]
Category Archives: Counterfiet
Researchers develop tuneable anti-counterfeiting material
Phys.org June 24, 2024 Nanosized PersL materials could blend more easily with solvents and allow printing patterns with fine details. MgGeO3 is one of the frequently employed lattice hosts for PersL phosphors. It can accommodate divalent ions such as Mn2+ to produce deep red PersL. To date, the only reported method of synthesizing nanosized Mn-doped MgGeO3 (MGO:Mn) is the sol–gel method. The synthesis product has a wide particle size distribution and suffers severe aggregation. Researchers in Canada synthesized MGO:Mn nanorods with a uniformly distributed morphology. The nanorods exhibit more intense and longer-lasting PersL. By detailed comparative study between the MGO:Mn […]