In this paper a novel and economical method of generating three-dimensional micro-patterns on single crystal silicon without the need for a mask is presented. The technique is based on the fundamental understanding of frictional interaction at light loads. Micro-patterning is done through a two-step process that comprises mechanical scribing and chemical etching. The basic idea is to induce micro-plastic deformation along a prescribed track through frictional interaction between the tool and the workpiece. Then, by exposing the surface to a chemical under controlled conditions, preferential chemical reaction is induced along the track to form hillocks about 5 μm wide and 1 μm high. This method of micro-machining may be used for making patterns in micro-electro-mechanical systems (MEMS) at low cost. Furthermore, this process demonstrates how microtribological processes can be utilized in the fabrication of micro-structures.
|Journal||American Society of Mechanical Engineers (Paper)|
|Publication status||Published - 1997|
|Event||Proceedings of the 1997 Joint ASME/STLE/IMechE World Tribology Conference - London, UK|
Duration: 1997 Sept 8 → 1997 Sept 12
All Science Journal Classification (ASJC) codes
- Mechanical Engineering