< BK21 플러스 BEST 정보기술 사업단 세미나 개최 안내 >

개최일시 : 2015년 8월 28일 금요일 14:00 ~ 15:00

개최장소 : 제1공학관 A442호

세미나 제목 : Single nanoparticle detection by using high-Q optical microcavities

발표초록 : 

Detection of single nanoscale objects is highly desirable for applications in various fields, such as in early-stage diagnosis of human diseases and in environmental monitoring. High-Q microcavities, which can significantly enhance light-matter interactions, provide ideal platforms for label-free, ultrasensitive detection of single nano-objects. In this talk, we report the experimental demonstration of single nanoparticle detection using either resonance mode broadening or microcavity Raman laser splitting. For the latter, by monitoring the step changes in beat frequency of the two split Raman mode lasing, detection of single 20-nm-radius nanoparticles is realized in an aqueous environment. Since Raman scattering occurs in most materials under practically any pump wavelength, this split-mode Raman laser provides a more practical sensing platform.

강연자 : Yun-Feng Xiao / 북경대학교

초청자 : 전기전자공학과 교수 김동현A