Chemists use DNA to build the world’s tiniest antenna

https://nouvelles.umontreal.ca/en/article/2022/01/10/chemists-use-dna-to-build-the-world-s-tiniest-antenna/

"20,000 times smaller than a human hair... fluorescent nanoantenna receives light in one colour, or wavelength, and depending on the protein movement it senses, then transmits light back in another colour... ive nanometer-long antenna that produces a distinct signal when the protein is performing its biological function... able to detect, in real time and for the first time, the function of the enzyme alkaline phosphatase with a variety of biological molecules and drugs"