A semiconductor chip detects antigen concentrations at 1 parts per quadrillion molar mass

A chip, which can sense antigens at one part per quadrillion molar mass, was created. Antigens derived from diseases and present in blood and saliva were adhered onto the surface of a flexibly deformable nanosheet. The amount of force generated during the interaction between adhered antigens was then converted into nanosheet deformation information in order to successfully detect specific antigens. This sensor chip allows antigen and antibody tests to be carried out from home.