Silicon Nano Wires for Optical Elements

Lead partner: SIEMENS

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Periodic holes are defined in silicon wafer by photolithography, etched, and then filled by vacuum filling. The supporting matrix is then removed to leave a periodic pattern of needles.
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Photonic Crystal for implementation in a gas sensor

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The photonic crystal band gap is utilized in order to achieve guiding, as well as a local enhancement of the light intensity.

Nano-Structured Optical Coatings

Lead partner: SINTEF

By patterning the silicon surface, mirror or anti-reflective properties can be achieved for selected wavelengths.
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In comparison, the reflectivity of unpatterned silicon is ~31%.