| 摘要 |
A method of forming a suspended beam in a MEMS process is disclosed. In the process a pit (8) is etched into a substrate (5). Sacrificial material (10) is deposited in the pit (8) and on the surrounding substrate surface. The sacrificial material (10) is then removed from the surrounding substrate surface and from the periphery of the pit (8) so that there is a gap between the sacrificial material and at least two sidewalls of the pit. The sacrificial material is then heated so that it reftows such that the remaining sacrificial material contacts the sidewalls of the pit. Material for the beam (12), which is typically a metal, is then deposited on the substrate surface and the reflowed sacrificial material, and the sacrificial material is then removed to form the suspended beam. The beam could be used as the heating element in an inkjet printer.
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