Micro-fabrication combining stereo-lithography with reactive ion etching is proposed. Three-dimensional polymer structures smaller than 1 mm are fabricated on silicon wafer by He-Cd (325.0 nm) laser stereo-lithography. Using the polymer structure having a high-aspect ratio as resist for deep reactive ion etching, the microstructure is transferred to the silicon substrate with an etching ratio of 0.5. The proposed technique has been demonstrated by the fabrication of lens-like structures.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Hardware and Architecture
- Electrical and Electronic Engineering