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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Investigating the Optimized Ag Nanorod Array Fabrication Conditions for SERS Applications

2014년 9월 3일 16시 14분 51초
ANAL.P-584 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 15일 (수요일) 16:00~19:00
저자 및
이창렬*, 신용석, De Ranjit, 오명규*
광주과학기술원(GIST) 고등광기술연구소, Korea
The Ag nanorod array fabricated by oblique angle deposition (OAD) is widely used as SERS (Surface Enhanced Raman Spectroscopy) substrate due to its several advantages such as high reproducibility, uniformity, large SERS active area as well as high Raman signal enhancement. In a previous KCS conference, our research group reported the fabrication of Ag nanorods by OAD technique and obtained the SERS signal with an enhancement factor of ~ 107. In this experiment, thermal evaporation was used for Ag nanorods growth instead of e-beam. The substrate temperature during the Ag evaporation is one of critical factors for fabrication of well aligned Ag nanorods. In this presentation, profound investigations were carried out to find critical factors affecting the Ag nanorod array formation. Various condition parameters, such as deposition angle, deposition rate, source-to-substrate distance and deposition thickness during the evaporation process were investigated. The relationship between Ag nanorod morphology and SERS signal intensity were presented. Ag nanorod morphologies resulted from different Ag evaporation conditions were characterized by field emission-scanning electron microscopy (FE-SEM). The SERS signal intensity was found to improve as the deposition angle, source-to-substrate distance and deposition thickness were optimized. The results obtained in this investigation will be of great use in designing improved Ag nanorods array substrates for SERS applications.