Optimization techniques for grayscale photolithography

Conference Paper (2012)
Author(s)

Floris van Kempen (TU Delft - Computational Design and Mechanics)

Fred van Keulen (TU Delft - Computational Design and Mechanics)

Y Hirai (External organisation)

O Tabata (External organisation)

Research Group
Computational Design and Mechanics
More Info
expand_more
Publication Year
2012
Language
English
Research Group
Computational Design and Mechanics
Pages (from-to)
75-82
ISBN (print)
978-0-85316-311-4

Abstract

With the ongoing development of thick photoresists, promising possibilities have
emerged to use these transparent and flexible layers for micro-structures and micropatterns directly and not exclusively as a sacrificial layer in the processing. These 3D
polymer microstructures have many potential applications in the field of MEMS:
including micro-sensors and actuators, micro-optics and micro-fluidics. Using modern
3D exposure techniques, it is possible to vary the dissolution rate of thick photo resists
locally and create complex relief-type three-dimensional structures in just one exposure
and development cycle. Unfortunately, realizing the proper exposure conditions needed
for a specific 3D micro pattern is complicated, because of the non-linear and smoothing
nature of the physical processes. Nowadays, the most widely used approach is based on
trial-and-error designed exposure conditions. In this research a systematic approach is
developed, based on computational process simulation, associated adjoint sensitivity
analysis and optimization techniques.

No files available

Metadata only record. There are no files for this record.