Fig. 2.

(a) Bottom and (b) top copper layers of rigid-flex PCB, as well as (c) back and (d) tissue-facing sides of encased probe. The dimensions of the bare PCB are $\sim 6\mathrm{cm}\times 6\mathrm{cm}$, and the encased probe is 8 cm in diameter and 1 cm thick. (e) The peripheral control box with two probes connected via HDMI cable. The dimensions of the box are $42.9\mathrm{cm}\times 32.5\mathrm{cm}\times 14.5\mathrm{cm}$. (f) The wearable probe attached to the curved surface of human bust model.