[융합과학부]Nanoscale Applications of Optical Materials

Speaker: 김동환 교수(성균관대학교)

Date & Time: 2019년 4월 17일(수), 17:00

Where: 융합대학원 D-122호

Abstract

Current advances and the challenges that lie ahead in developing optical materials for healthcare and biotechnology will be discussed. These advances include using plasmonic nanoparticles in biomolecular assay to probe dynamic behavior of various biomolecules. One of examples is plasmonic biosensors that has enabled LSPR-shift assay with single nanoparticles. Single-nanoparticle plasmonic sensors are particularly attractive because of better signal-to-noise resolution and low limits of detection. This promising probing tool on biomolecular assay should find their application in parallel screening of nucleic acid and protein profiles and will compete with current microarrays. Most recent development on a plasmonic dimer that utilizes plasmonic coupling will be also discussed.
Further, upconversion materials, Lanthanide trivalent ions (Ln3+) embedded in an inorganic host solid, which possesses the fascinating ability to convert multiple low-energy photons into a higher-energy photon will be discussed. Upconversion luminescence suggests the promise of Ln3+-doped materials in emerging novel applications, such as energy harvesting for solar cells or deep tissue optogenetics. The upconversion efficiency and the spectral purity are determined by the complex interaction between the host material and the lanthanide ion at an atomic level. However, the weak interaction inherited in the conventional host materials has been an obstacle of further improvements. In this regard, the novel host material that does not have a short-range order (1st coordination order) so as to maximize the host interactions will be discussed. This new material will be used in future laser technologies on photonic integrated circuit devices.

Biography

[학력]

Ph.D., University of Michigan, Ann Arbor, MI Biomedical Engineering, 2005
M.S., Seoul National University, Seoul, Korea, Materials Science and Engineering, 2001
B.S., Yonsei University, Seoul, Korea, Materials Science and Engineering, 1999

[경력]

2015 – present : Associate Professor, SKKU, Sch. Chem. Eng., Korea
2008 – 2015: Tenured Assoc/Assistant Prof., Nanyang Tech. Univ., Sch. Chem. Biomed. Eng., Singapore
2005 – 2008: Research Associate, Duke University, Durham, NC, Biomedical Eng.
2005 – 2005: Postdoctorate Fellow, Univ. of Michigan, Ann Arbor, MI, Biomedical Eng.
2001 – 2005: Graduate Research Assistant, Univ. of Michigan, Ann Arbor, MI, Biomed Eng.
1999 – 2001: Graduate Research Assistant, Seoul National Univ., Korea, Mat. Sci. and Eng.

 

초청자 : 융합과학부 나노융합전공 송윤규 교수(연락처 : 031-888-9133, songyk@snu.ac.kr )

2019-04-15|