Tiny Injectable Radios Can Broadcast from Inside the Body

University of Michigan electrical and computer engineers are designing millimeter-scale ultra-low-power sensing systems that can be injected into the body through a syringe. Unlike other radios of this size, these new devices are able to broadcast through the human body to an external receiver. This device came from the researchers responsible for the Michigan Micro Mote (M3) - currently the world's smallest computer - which has enabled a variety of sensors that can fit inside the human body. Now with a radio specifically designed to communicate through tissue, the researchers are adding another level to the computer platform. Real time information can be applied to devices monitoring heart fibrillation as well as glucose monitoring for diabetics. This new radio can transmit information from inside the body up to one foot to a data base receiver, more than 5 times the distance from any known radio of equal size.