A keynote by Professor Jay Guo the University of Michigan discussed Roll-to-Roll Nano-Impression Printing. Rollers can have plates with fine structures rotate with a web and print conductive and non-conductive structures. These structures may be as small as 10s of nanometers. These may form electronics such as for displays, optical properties such as polarization or color. Registration requirements for longitudinal and transverse positioning to 2 nm increase present state-of-the-art by 2 to 3 orders of magnitude. Additionally, any tension variations causing micro-slip will demolish the nano-structures. Keith Good showed that OSU has successfully nano-impressed 20-um structures, although not with registration.
Great papers on modeling; a paper by Tim Walker about nip roller problems and solutions, and a really impressive talk about measuring curl by Ron Swanson.
I had to catch a flight, so missed the discussion period. I am sure it was engaging, based on the presentations in the morning. A great conference. I will certainly be back.