P. Ferreira, UIUC

Rogers, UIUC, Yoon et. al. Nat. Mat. 7, 907-915 (2008)

Material-scale Heterogeneous Functional Integration

• Reduce the c-Si (or other active materials) by 2 or 3 orders of magnitude • Integrate multiple functions and create scalable manufacturing approach

CONCEPT

Rogers, UIUC, Yoon et. al. Nat. Mat. 7, 907-915 (2008)

Real estate for other functionalElements for storage & inversion

MANUF.APPROACH

CHALLENGES

• Scale up of Manufacturing• Materials Design• Thermal Management• Reliability

P. Ferreira, UIUC

Large-Area Nano-patterning

• Increasing efficiency of conversion of radiant energy, decrease material use

CONCEPT

Figure taken from Nick Fang, UIUC

• Increase coupling with different wavelengths

• Orthogonal transport of photons and electrons

MANUF. APPROACH

• Development of economic, non-vacuum, large-area patterning techniques

• Direct patterning of metals

Examples• Direct write methods

(see Park, et. al. Nat Matl. 6:10, 782-789, 2007)• Superionic stamping

(see Hsu et. al. Nano Lett. 7:2, p446, 2007)• Imprint lithography

CHALLENGES

• Nano-patterning meter-scale areas on a dime• Process robustness• Reliability and Lifecycle issues

Manufacturing Anti-Icing Surfaces for Windmills

W.P. King, University of Illinois and Hoowaki LLC

- Windmills do not function when ice coated- Icing limits where windmills can be built- Existing paints and coatings not good enough- Microstructures can significantly mitigate icing- Manufacturing requirements:

-scalable to large areas- curved surfaces- inexpensive materials and processes