a) Schematic of integrated implantable glucose sensor featuring a glucose-sensitive hydrogel sandwiched between a rigid nanoporous membrane and a semiflexible micrcapacitor, which is connected to a microinductor coil.
b) Top view of microsensor indicating size. Microcapacitor in center is scored with cutting lines to reduce eddy currents, and from top vantage point appears to be “framed” by microinductor coil.
c) Side view of microcoil, which is deposited into trenches in bottom silicon piece. Panels a,c reproduced from Ref. 45 with permission.
Panel b reproduced from Ref. 39 with permission.