Tiny, Wireless, Injectable Chips Use Ultrasound to Monitor Body Processes Columbia Engineers develop the smallest single-chip system that is a complete functioning electronic circuit; implantable chips visible only in a microscope point the way to developing chips that can be injected into the body with a hypodermic needle to monitor medical conditions MAY 12 2021 | BY HOLLY EVARTS | IMAGE CREDIT: CHEN SHI/COLUMBIA ENGINEERING MEDIA CONTACT Holly Evarts, Director of Strategic Communications and