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  • 02월 28일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Polarization- and Wavelength-Dependent Defocused Scattering Imaging of Single Gold Nanostars with Multiple Long Branches

등록일
2019년 2월 1일 11시 09분 39초
접수번호
5104
발표코드
ANAL2.O-26 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 10시 : 40분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
Geunwan Kim, Ji Won Ha*
Department of Chemistry, University of Ulsan, Korea

We demonstrated the polarization- and wavelength-dependent defocused scattering properties of singe gold nanostars (AuNSs) with multiple long branches on their surfaces at the localized surface plasmon resonance (LSPR) wavelengths. As a function of the rotational angle of a polarizer, the defocused DF scattering intensities of single AuNS were periodically changed without changing in the doughnut-shaped scattering patterns at two LSPR excitation wavelengths. Furthermore, the characteristic doughnut-shaped defocused scattering pattern enabled to resolve the spatial field distributions of single dipoles on the same AuNS surface at two LSPR wavelengths. Finally, we could track real-time rotational dynamics of a AuNS rotating on a glass slide under defocused microscopy. Therefore, we provided a deeper understanding of the defocused scattering properties of single AuNSs with multiple long branches randomly extended on the surface.


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