On this day, 28 years ago, June 5, 1997 (May 1, 1997 in the lunar calendar), Australia scientists invented a miniature diagnostic instrument. Micro diagnostic instrument On June 5, 1997, Australia scientist Dr. Cornell showed the world's first micro diagnostic instrument he invented after 10 years of research. The surface of this micro electrode sensing device is coated with a layer of extremely sensitive thin film. It can be used to detect certain diseases in a few minutes with a drop of blood or a little saliva. Implanted into the human body, blood sugar and other indicators can be measured through electronic signals. According to Dr. Cornier, this miniature diagnostic instrument can detect cardiac function and can also be used for tests related to measles and AIDS. However, it is expected to take two years before it is launched as a commercial product and used in clinical practice.