Patent ID: 8828138

Claim:
A method of forming a sensor comprising a field effect transistor (FET) sensor embedded with a nanopore, the method comprising: epitaxially growing a FET stack comprising a source layer including a first type of doped ions, a drain layer including a second type of doped ions matching the first type of doped ions, and a channel layer including a third type of doped ions being different from the first and second type of doped ions on a silicon on insulator (SOI) wafer to inhibit the first type of doped ions and the second type of doped ions from diffusing into the channel layer; forming a top silicon nitride layer over the FET stack; forming a bottom silicon nitride layer under the SOI wafer; forming a window in the bottom silicon nitride and the SOI wafer; forming a nanopore in the FET stack; and coating the nanopore with a gate dielectric to form the FET sensor.