Nanoimprint is an emerging lithographic technique that promises high-throughput patterning of nanostructures with simple equipment set ups . Capable of achieving pattern resolutions beyond the limitations set by the light diffractions or beam scatterings in other conventional techniques, it can also directly imprint functional device structures using a variety of polymers. This tutorial will describe the basic principles and experimental details of the nanoimprint technology. It will also discuss recent progress in this field, including several novel applications.

The second part of the tutorial will explore the fabrication of organic thin-film transistors (OTFTs). The rapid development in this area has been fueled by the promise of low-cost fabrication, lightweight construction, mechanical flexibility, and durability, as well as large-area coverage. The tutorial will cover: (1) a brief introduction of the effect of the molecular structure and morphology of the organic semiconductors; (2) recent progress in printing and patterning of OTFTs, such as inkjet printing, screen printing, and microcontact printing, and will focus on new patterning strategy by using the “tailored” adhesions as the patterning-driven force .

L. Jay Guo (view bio)
University of Michigan

Yanchun Han (view bio)
Chinese Academy of Sciences

Instructor Bios:

L. Jay Guo received his BS from Nankai University in China in 1990, and his MS and PhD from the University of Minnesota in 1995 and 1997, respectively. He was employed as a research associate at Princeton University from 1997-1999. Guo joined the University of Michigan Department of Electrical Engineering and Computer Science as an assistant professor in 1999. His current research areas include photonic biosensor devices, organic electronics, and nanofabrication technologies (especially nanoimprinting) with applications in polymer photonic devices and biotechnologies.

Yanchun Han received her PhD from the Chinese Academy of Sciences (CAS) Changchun Institute of Applied Chemistry (CIAC) in 1995. After that, she worked at the University of Naples, the University of Kaiserslautern, the Martin-Luther University Halle-Wittenberg, and the University of Michigan as a postdoctoral fellow. She received the Alexander von Humboldt Research Fellowship in 1996, and the DAAD-K. C. Wong Fellowship in 1998. Han joined the CIAC as a full professor in 2000. She was selected for the CAS “Hundreds of Talents Program” in 2000, and the National Science Foundation for Distinguished Young Scholars in 2001. Her research interests include the printing methods for organic electronic devices, polymer thin films, surface, and interface. She has published more than 90 papers in international refereed journals.