Date

2014

Document Type

Thesis

Degree

Master of Science

Department

Mechanical Engineering

First Adviser

Liu, Yaling

Abstract

In this thesis, a new digital lithography technology with gradient grayscale level is firstly applied in Micro-wrinkles pattern fabrication. A mathematical model is developed to predict the micro-wrinkles patterns generation through various gradient grey scale effect. By comparing theoretical curing depth and grayscale level versus light intensity, a feasible and logical experiment method is discussed. The sinusoidal waves generated on a surface, i.e. the resolution, wavelength, and amplitude are characterized by optical microscopy and scanning electron microscopy. Results from this study contribute to the fundamental understanding the knowledge on how the grayscale level and surplus growth influence the curing depth on a surface. Meanwhile, the research also contributes to potential applications in optical devices, micro-fluidic device, and cell culture substrates.

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