Changeable tattoos

摘要

A changeable tattoo system with an electrically modifiable ink that includes biocompatible microspheres or particles encapsulated in a clear microsphere shell of diameter 30-150 microns. A hard overcoat is used to reduce deformation under loading from the skin. Tattoos are implanted with a novel tattoo needle with a flat or concave forward tip. A conformable set of drive electrodes is applied to the skin to manipulate the tattoo image using magnetic or electrophoretic techniques that include the use of an electrophetic backplane of the body's core capacitence. A capactive coupling electrode is used to establish this connection. Greyscale and color gradient images are created by calibrating the system before use and pulsing EM fields.