To tackle these problems, the scientists designed a patch, approximately one square inch in size and a few millimeters thick, that can be placed practically anywhere on the body and worn for a couple of days. The patch is multilayered like a candy wafer with two main components an ultrasound probe, which is stacked on top of a complaint if I pronounce that right C-O-U-P-L-A-N-T-A material that helps facilitate the transmission of acoustic waves from the probe into the body