A group of researchers including Revalesio scientists published a new method that allows the sizing of nanoparticles in solution with previously unachieved precision. The paper appeared in the journal ACS Nano. The method is based on resistive-pulse sensing but adds the possibility of controlled, repetitive translocation of single nanoparticles through a nanopore sensor. The repeated measurements facilitated by this technique greatly reduced the uncertainty typically associated with resistive-pulse sensing and allowed the differentiation of gold nanoparticles that differed by a radius of only ~1 nm.
Link to the paper: Sizing Individual Au Nanoparticles in Solution with Sub-Nanometer Resolution