| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
8. 나노센서의 핵심기술과 최근 응용 분야(Nanotechnology-based Sensors and The Recent Applications) |
| 제목 |
Spontaneous nano-gap formation in Ag film using NaCl buffer layer for Raman enhancement |
| 초록 |
We report the method of fabrication of nano-gap (known as hot spots) in Ag thin film using sodium chloride (NaCl) buffer layer for Raman enhancement. The Ag thin film (20 ~ 50 nm) on the NaCl buffer layer undergoes an interfacial reaction due to the AgCl formed at the interface during water molecule intercalation. The intercalated water molecules can dissolve the NaCl molecules at interfaces and form the ionic state of Na+ and Cl-, promoting the AgCl formation. The Ag atoms can migrate by the driving force of this interfacial reaction, resulting in the formation of nano-size gaps in the film. The surface-enhanced Raman scattering activity of Ag films with nano-size gaps has been investigated using Raman reporter molecules, Rhodamine 6G (R6G). |
| 저자 |
류학기 |
| 소속 |
아주대 |
| 키워드 |
NaCl buffered Ag; SERS; Spontaneous nano-gap.
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| E-Mail |
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