| Summary: | 碩士 === 國立清華大學 === 動力機械工程學系 === 103 === This research proposed a ring-shape mechanical clamp to provide 360° isotropic strain on the xy-plane onto an elastic substrate to modify the patterns above it after lithography. By applying the 200μm-thick PDMS substrate 10%, 20%, and 40% isotropic strain followed by 10nm thick Ag pattering by lithography, the patterns showed 17%, 30%, and 49% area reduction respectively. Compared with their respective 17.4%, 30.6%, and 49%theoretical reduction, the research showed identical theory, simulation, and experimental works. This research improved the impracticality of the previous one-dimensional pre-strain lithography on the xy-plane.
The results not only showed expected area reduction, but also showed the independency of size, location, and orientation of the pattern. The results implied that pattern size reduction of lithography can be realized without changing the facilities, parameters, and materials.
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