Fig. 5.
Foundry-based transient electronic systems on a PLGA substrate. (A) Optical micrographs of transient logic gates (similar to the transient logic gates shown in Fig. 3) on a thin film of PLGA wrapped onto a glass cylinder. (Inset) Magnified view of the interconnected MOSFETs. (B) Current-voltage characteristics of typical n-channel MOSFETs mounted on cylinders with different diameters. Ig, gate leakage current. (C) Optical micrographs at various stages of dissolution and disintegration of transient electronics that integrate foundry-based microelectronics on the thin PLGA sheet. This accelerated dissolution test is performed in an aqueous buffer solution (pH 7.4) at 70 °C.