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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Polarization- and Wavelength-Dependent Optical Properties of Single Gold Nanourchins under DF Microscopy

2018년 2월 6일 16시 48분 30초
ANAL1.O-12 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 10시 : 27분
Analytical Chemistry - Oral Presentation of Young Analytical Chemists I
저자 및
geunwan kim, JI WON HA*
Department of Chemistry, University of Ulsan, Korea
AuNUs exhibit more distinct features compared to simple gold nanosphere, because of their complex structure with spiky and uneven surfaces. We characterized the optical properties of singe gold nanourchins (AuNUs) with sharp and short tips on their surface under single particle dark-field (DF) microscopy and spectroscopy. DF scattering intensities of single AuNUs were investigated as a function of rotation angle at three different wavelengths of 600 nm, 640 nm localized surface plasmon resosnace (LSPR) wavelength, and 700 nm, using the corresponding band pass filters. The DF intensities were periodically changed as a function of rotational angle at the three different wavelengths. Furthermore, the phase of a DF intensity trace was different according to the incident wavelength on a single AuNU, which can be explained by the generation of single dipoles with different wavelengths in multiple directions on the AuNU surface. These findings contribute to a deeper insight of the scattering properties of single AuNUs, and this study will be beneficial for several potential applications, including optical imaging and sensing in the fields of materials science and biology.