Patent ID: 11874217
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. The method according to claim 15, wherein the first substrate is formed of essentially monocrystalline silicon, wherein the cavity bottom is parallel to a crystalline plane of which the Miller indices are 1,0,0 or 1,1,0, and wherein producing said recesses comprises the following operations:
producing a protective layer covering the lateral faces of said half-cavity,
depositing a protective mask on the bottom of said half-cavity, the mask being deposited through a stencil and comprising orifices coinciding with the openings of the recesses to be etched,
wet etching the first substrate, by action of potassium hydroxide or tetramethylammonium hydroxide,
removing the protective mask and the protective layer.