Journal
APPLIED PHYSICS EXPRESS
Volume 16, Issue 3, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/acc3db
Keywords
large-area micro-nano structures; maskless optical projection lithography; femtosecond laser; narrow gap
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We propose a strategy to achieve narrow gaps in micro-nano structures using the femtosecond laser maskless optical projection lithography (MOPL) technique. Simulation predicts the trend of factors affecting the gap width, in agreement with experimental results. A narrow gap of 243 nm is obtained by optimizing the structure design and processing parameters. Furthermore, large-area functional micro-nano structures with narrow gaps are successfully fabricated. The strategy of optimizing gap width in MOPL is flexible and effective, providing wide application prospects in nanophotonics and semiconductor micro-nano device fabrication.
We propose a strategy to achieve narrow gaps in micro-nano structures by femtosecond (fs) laser maskless optical projection lithography (MOPL) technique. The simulation predicts the trend of each factor affecting the gap width, which agrees with the experimental result. A narrow gap of 243 nm is obtained by optimizing the structure design and processing parameters. Furthermore, large-area functional micro-nano structures with narrow gaps are fabricated. The strategy of optimizing the width of narrow gaps in MOPL is flexible and effective, providing wide application prospects in the fabrication of micro-nano devices in nanophotonics and semiconductors.
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