image: This is a three-dimensional plasmon ruler from three-dimensional plasmonic structure with attached DNA. This image relates to an article that appeared in the June 17, 2011, issue of Science, published by AAAS. The study, by N. Liu at University of California, Berkeley in Berkeley, Calif., and colleagues was titled, "Three-Dimensional Plasmon Rulers." view more
Credit: Image © <i>Science/</i>AAAS