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  • 02월 19일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제119회 학술발표회 및 총회 Investigation on variation of Raman spectral feature by change of particle size

등록일
2017년 2월 6일 16시 11분 27초
접수번호
2779
발표코드
ANAL1-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 13시 : 50분
발표형식
심포지엄
발표분야
분석화학 - Recent Advances in Analytical Chemistry I: Advanced Materials and Instrument in Analytical Chemistry
저자 및
공동저자
정회일
한양대학교 화학과, Korea
The variation of Raman spectral feature with change of particle size has been systematically investigated. Both lactose powders and pellets composed of five different particle sizes were prepared for the examination. Uniquely in this study, three separate spectral acquisition schemes with different sizes in laser illumination and detection window were employed. In both samples, the distribution of Raman photons became broader with the increase of particle size, since mean free path of laser photons, average photon travel distance between consecutive scattering locations, became longer under this situation. In a meanwhile, the photon distribution was narrower in the pellets since individual particles were more densely packed in a given volume. In overall, physical characteristics of a sample determining the internal Raman photon distribution was surely the main factor influencing on Raman intensity. More notably, experimental configuration used for spectral acquisition was another crucial factor affecting the peak intensity, as exclusively investigated in this study. Monte Carlo simulation was effective to probe the photon distribution inside the samples and help to support the experimental observations

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