University of Illinois

X-celeprint Limited

Semprius, Inc.

Michael Motala

Ralph G Nuzzo

Matthew Alexander Meitl

Etienne Menard

Mark Stoykovich

Jong-Hyun Ahn

John A Rogers

Alfred J Baca

Jongseung Yoon

Chang-Jae Yu

Heung Cho Ko

Sang-Il Park

Keon Jae Lee

Heung-Cho Ko

William Robert Childs

Sang-II Park

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities. Optical systems of the present invention include devices and device arrays exhibiting a range of useful physical and mechanical properties including flexibility, shapeability, conformability and stretchablity.

Optical systems fabricated by printing-based assembly

A method of making a microstructure includes selectively activating a portion of a surface of a silicon-containing elastomer, contacting the activated portion with a substance, and bonding the activated portion and the substance, such that the activated portion of the surface and the substance in contact with the activated portion are irreversibly attached. The selective activation may be accomplished by positioning a mask on the surface of the silicon-containing elastomer, and irradiating the exposed portion with UV radiation.

Decal transfer lithography

Growing community of inventors

Champaign, IL, United States of America

Michael Motala