Revolutionary Dual-Fluorescent Security Ink Developed by Indian Scientists Sub: Sci Sec: Msc  Why in News Scientists from the Institute of Nano Science and Technology (INST), Mohali, and the Bhabha Atomic Research Centre (BARC), Mumbai, have developed a novel security ink using strontium bismuth fluoride (Sr2BiF7) nanoparticles. This new ink fluoresces under both, enhancing […]