New technologies for large-scale micropatterning of functional nanocomposite polymers

A. Khosla; B. L. Gray

doi:10.1117/12.915178

30 March 2012 New technologies for large-scale micropatterning of functional nanocomposite polymers

A. Khosla, B. L. Gray

Proceedings Volume 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012; 83440W (2012) https://doi.org/10.1117/12.915178
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

We present a review of different micropatterning technologies for flexible elastomeric functional nanocomposites with a particular emphasis on mold material and processes for production of large size substrates. The functional polymers include electrically conducting and magnetic materials developed at the Micro-instrumentation Laboratory at Simon Fraser University, Canada. We present a chart that compares many of these different conductive and magnetic functional nanocomposites and their measured characteristics. Furthermore, we have previously reported hybrid processes for nanocomposite polymers micromolded against SU-8 photoepoxy masters. However, SU-8 is typically limited to substrate sizes that are compatible with microelectronics processing as a microelectronics uv-patterning step is typically involved, and de-molding problems are observed. Recently, we have developed new processes that address the problems faced with SU-8 molds. These new technologies for micropatterning nanocomposites involve new substrate materials. A low cost Poly(methyl methacrylate) (PMMA) microfabrication technology has been developed, which involves fabrication of micromold via either CO₂ laser ablation or deep UV. We have previously reported this large-scale patterning technique using laser ablation. Finally, we compare the two processes for PMMA producing micromolds for nanocomposites.

Citation Download Citation

A. Khosla and B. L. Gray "New technologies for large-scale micropatterning of functional nanocomposite polymers", Proc. SPIE 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012, 83440W (30 March 2012); https://doi.org/10.1117/12.915178

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