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    ๊ณ ๋ถ„์ž ๊ณ„์ธต ๊ตฌ์กฐ๋ฌผ์˜ ์ „์‚ฌ ํ”„๋ฆฐํŒ… ๊ณต์ •์„ ํ†ตํ•œ ๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ๊ธˆ์† ํŒจํ„ด ์ œ์ž‘

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    ํ•™์œ„๋…ผ๋ฌธ (์„์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› : ๊ธฐ๊ณ„ํ•ญ๊ณต๊ณตํ•™๋ถ€(๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ๊ธฐ๊ณ„์„ค๊ณ„์ „๊ณต), 2013. 2. ์„œ๊ฐ‘์–‘.์Šคํƒฌํ”„ ๊ธฐ๋ฐ˜ ํ”„๋ฆฐํŒ… ๊ธฐ๋ฒ•์€ ๋งˆ์ดํฌ๋กœ์™€ ๋‚˜๋…ธ์Šค์ผ€์ผ ํŒจํ„ด์„ ์‰ฝ๊ณ  ๋น ๋ฅด๊ฒŒ ํ˜•์„ฑํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐ์ˆ ๋กœ ๋„“์€ ์‘์šฉ ์˜์—ญ์— ๊ฑธ์ณ ํ™œ์šฉ๋˜๋Š” ๊ธฐ์ˆ ์ด๋‹ค. ์Šคํƒฌํ”„ ๊ธฐ๋ฐ˜์˜ ํ”„๋ฆฐํŒ… ๊ณต์ •์—์„œ ๋ฏธ์„ธํ•œ ํŒจํ„ด์˜ ์ •ํ™•๋„๋ฅผ ๊ฒฐ์ •ํ•˜๋Š” ๊ฐ€์žฅ ์ค‘์š”ํ•œ ์š”์†Œ๋Š” ์Šคํƒฌํ”„์˜ ๊ฐ•์„ฑ๊ณผ ํ˜•์ƒ์ด๋‹ค. ๊ธฐ์กด์— ์‚ฌ์šฉ๋˜๋Š” ๊ณ ๋ถ„์ž ๋‹จ์ผ ์Šค์ผ€์ผ ์Šคํƒฌํ”„์˜ ๊ฒฝ์šฐ๋Š” ๋‹จ์ผ ๋””๋ฉ˜์ ผ์˜ ํŒจํ„ด์„ ๋งŒ๋“ค๊ธฐ์— ์ ํ•ฉํ•˜์ง€๋งŒ ๋‚˜๋…ธ์™€ ๋งˆ์ดํฌ๋กœ ์Šค์ผ€์ผ์ด ๋ณตํ•ฉ์ ์œผ๋กœ ํ˜ผํ•ฉ๋œ ๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ํŒจํ„ด์„ ํ˜•์„ฑํ•˜๋ ค๋ฉด 2ํšŒ ์ด์ƒ์˜ ํ”„๋ฆฐํŒ… ์ž‘์—…์ด๋‚˜ ์—์นญ, ๋ฆฌํ”„ํŠธ์˜คํ”„ ๋“ฑ๊ณผ ๊ฐ™์€ ๋ณต์žกํ•œ ๊ณต์ •์ด ํ•„์š”ํ•˜๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ํŒจํ„ฐ๋‹์„ ์œ„ํ•ด ์ž์™ธ์„  ๊ฒฝํ™”์„ฑ ๊ณ ๋ถ„์ž์˜ ๊ธฐ๊ณ„์  ๊ฐ•๋„๋ฅผ ์ •๋Ÿ‰์ ์œผ๋กœ ์กฐ์ ˆํ•˜์—ฌ ์Šคํƒฌํ•‘์— ์ตœ์ ํ™”๋œ ํ˜•์ƒ์œผ๋กœ ๊ณ ๋ถ„์ž ๊ณ„์ธต ๊ตฌ์กฐ๋ฌผ์„ ์ œ์ž‘ํ•˜์˜€๋‹ค. ๊ณ„์ธต ๊ตฌ์กฐ์ฒด๋Š” ์ƒ๋‹จ๋ถ€ ๋‚˜๋…ธ ๊ตฌ์กฐ๋ฌผ๊ณผ ํ•˜๋‹จ๋ถ€ ๋งˆ์ดํฌ๋กœ ๊ตฌ์กฐ๋ฌผ๋กœ ๊ตฌ์„ฑ๋˜๋Š”๋ฐ, ํ•˜๋‹จ๋ถ€ ๋งˆ์ดํฌ๋กœ ๊ตฌ์กฐ๋ฌผ์ด ์ถฉ๋ถ„ํ•œ ๊ฐ•์„ฑ๊ณผ ๋†’์ด๋ฅผ ์ œ๊ณตํ•˜์—ฌ ์Šคํƒฌํ”„์˜ ๋ณ€ํ˜• ์—†์ด ํ”„๋ฆฐํŒ… ๊ณต์ •์ด ๊ฐ€๋Šฅํ•˜๋‹ค. ๊ฒฐ๊ตญ, ์ œ์ž‘๋œ ๊ณ„์ธต ๊ตฌ์กฐ๋ฌผ์„ ์Šคํƒฌํ”„๋กœ ์‚ฌ์šฉํ•˜์—ฌ ๊ธฐ์กด์˜ ๋‹จ์ผ ๊ตฌ์กฐ๋ฌผ๋กœ ์ œ์ž‘์ด ์–ด๋ ค์› ๋˜ ๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ๊ธˆ์† ํŒจํ„ด์„ ์†์‰ฝ๊ฒŒ ๊ตฌํ˜„ํ•˜์˜€๋‹ค. ํŠนํžˆ, 1ํšŒ์˜ ์ „์‚ฌ ํ”„๋ฆฐํŒ… ๊ณต์ •์œผ๋กœ ํ‰ํƒ„ํ•œ ๊ธฐํŒ๋ฟ ์•„๋‹ˆ๋ผ ๋งˆ์ดํฌ๋กœ ์Šค์ผ€์ผ์˜ ํŒจํ„ด์„ ๊ฐ€์ง„ ๊ธฐํŒ์˜ ๋ฐ”๋‹ฅ๋ฉด๊นŒ์ง€ ์†์‰ฝ๊ณ  ๋น ๋ฅด๊ฒŒ ๋ฉ€ํ‹ฐ์Šค์ผ€์ผ ํŒจํ„ด์„ ํ˜•์„ฑํ•  ์ˆ˜ ์žˆ๋Š” ๋ฐฉ๋ฒ•์„ ๊ณ ์•ˆํ•œ ๊ฒƒ์— ์˜์˜๊ฐ€ ์žˆ๋‹ค.With the advances of micro/nano structures in the field of electronic, optical, fluidic and biomedical devices, there is a growing need to fabricate multiscale patterns and hierarchical structures in a simple and low-expertise manner. We present a simple method for transferring multiscale metal patterns on flat and patterned substrates by using hierarchical polymeric stamps made of UV-curable perfluoropolyether (PFPE). A dual-scale PFPE structure was made via two-step molding process under partial photocrosslinking conditions with a conversion ratio in the range of 35 to 45%. Micro- and nanoscale combined structures were generated over a large area with high physical integrity with various length scales from 10 to 500-ฮผm for the base microstructure and from 150 nm to 10-ฮผm for the secondary structure. The hierarchical PFPE stamp enabled multiscale transfer printing (MTP) of metal pattern in single printing step on flat and patterned surfaces with recessed regions, which was impossible with a single-scale PFPE stamp.Abstract ii Contents iii List of Figures iv Nomenclature vii 1.Introduction 1 2.Results and Discussion 4 3.Conclusion 12 Experimental Section 14 Table and Figures 18 References 28 Abstract (Korean) 33Maste

    simulations on the monopole offshore wind turbine using fully coupled aero-servo-elastic model

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