New device from MIT can measure masses as small as one
millionth of a trillionth of a gram, in solution.
MIT engineers have devised a way to measure the mass of
particles with a resolution better than an attogram — one millionth of a
trillionth of a gram. Weighing these tiny particles, including both synthetic
nanoparticles and biological components of cells, could help researchers better
understand their composition and function