MICROPARTICLE AND SUBSTANCE DETECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To detect a small amount of detecting object in an inspection solution in which the detecting object and other various materials are mixed.SOLUTION: A microparticle (4a) includes: a selection bond part (41) capable of selectively combining with a detecting object contained in an inspection solution; and a torque application part (42) for applying torque to the microparticle (4a) by receiving force of a field from a magnetic field applied to the inspection solution. The selection bond part and the torque application part are placed at different positions in a surface of the microparticle (4a).