Patent ID: 11898989
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. An apparatus comprising a MEMS device, the MEMS device including:
a first semiconductor body having a first surface;
a second semiconductor body having a second surface facing the first surface of the first semiconductor body;
a first spacer element and a second spacer element between the first surface of the first semiconductor body and the second surface of the second semiconductor body;
a first duct between the first and second semiconductor bodies and between the first and second spacer elements;
a first emitter unit on the first semiconductor body, the first emitter unit including a first membrane suspended over a first buried cavity in the first semiconductor body; and
a first particulate detection unit on the second semiconductor body, the first particulate detection unit including a second membrane suspended over a second buried cavity in the second semiconductor body, the first membrane facing the second membrane through the first duct.