Sensor sensibility

时间:2019-03-06 07:15:02166网络整理admin

By Joanna Marchant CANCER and other diseases may one day be diagnosed by chemical sensors implanted inside a sick person’s cells, according to researchers at the University of Michigan. Raoul Kopelman and his colleagues have made tiny sensors out of polymer balls just 20 nanometres across, 10 times the width of a DNA helix. The balls, nicknamed “pebbles”, are impregnated with a dye that glows when it binds to a particular chemical. They take up only one-billionth of the volume of a cell,