| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
대학원생 구두발표(발표10분) |
| 제목 |
Hierarchically Well-Ordered Array of Concentric Silver Nanorings for Highly Sensitive Surface-Enhanced Raman Scattering Substrate |
| 초록 |
We fabricated a high density array of concentric silver nanorings in a large area (over in2) with uniform gap distance by utilizing half onion-shaped microdomains prepared by symmetric polystyrene-block-poly(methyl methacrylate) copolymers (PS-b-PMMA) confined within hemispherical cavities in anodized aluminum oxide (AAO) template. Silver nanoparticles with 6 nm height were selectively deposited only on the PS microdomains by thermal evaporation. The gap distance of two neighboring silver nanorings was controlled from 12 to 24 nm by changing the total molecular weight of PS-b-PMMAs. The substrate showed high surface-enhanced Raman scattering (SERS) enhancement factor as high as 4.3 × 107 with good reproducibility (±7%). It could be used for biosensing, detection of trace-level explosive and hazardous chemicals, and reaction monitoring. |
| 저자 |
배두식1, 조원준2, 전금혜2, 김진곤2
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| 소속 |
1포항공과대, 2포항공대 |
| 키워드 |
Block copolymer; confinement; SERS
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| E-Mail |
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