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연사 Jason Olfert
강좌일시 2017. 7. 13.(목)  16:00~17:00
강좌 제목 Beyond particle mobility classifiers: Classifying particles by mass or relaxation time

멀티스케일 에너지 강좌

미래창조과학부 글로벌프론티어 (재)멀티스케일 에너지 시스템 연구단은 나노기술과 에너지 기술의 융합을 통하여 혁신적 미래 광에너지와 분자에너지 원천기술 개발을 목표로 하는 멀티스케일 에너지 시스템 연구사업을 추진하고 있습니다. 연구단에서 멀티스케일 에너지 강좌를 개최하오니 관심 있는 분들의 많은 참석 바랍니다.

1. 제 목 : Beyond particle mobility classifiers: Classifying particles by mass or relaxation time

2. 연 사 : Jason Olfert (Associate Professor in Mechanical Engineering at the Univ. of Alberta)

3. 일 시 : 2017년 7월 13일 (목), 16:00~17:00

4. 장 소 : 서울대학교 301동 1420호

5. 내 용 : Mobility classifiers, like the differential mobility analyzer (DMA), have been used for decades to separate polydisperse aerosols into classes so that the particles can be counted or otherwise measured by another instrument. The DMA is routinely used to measure particle count distributions or generate a “monodisperse” aerosol. More recently, classifiers have been developed to classify particles by their mass-to-charge ratio (centrifugal particle mass analyzers, CPMA) or relaxation time (aerodynamic aerosol classifier, AAC). This presentation will describe the operating principles behind the CPMA and AAC and show how they can be used in applications where a DMA is not suitable. In particular, the CPMA can be used to:

I) measure particle mass distributions,

ii) measure soot morphological properties (e.g. effective density, shape factor, primary particle size),

iii) measure the size-segregated mixing state of an aerosol (i.e. measure the mass of volatile material in the aerosol and determine if it exists as individual particles or mixed into the structure of a non-volatile particle), or

iv) traceably calibrate mass concentration instruments like photoacoustic or laser induced incandescence instruments.

6. 약 력 :

Dr Jason Olfert is an Associate Professor in Mechanical Engineering at the University of Alberta. His research is focused on developing novel aerosol instruments, characterizing particulate emissions from combustion sources, and understanding how aerosols affect global climate. Dr. Olfert’s past and current research is focused on particulate emissions from internal combustion engines, gas turbine engines, flares, and burners. He has worked on the development of the centrifugal particle mass analyzer and aerodynamic aerosol classifier which are sold or licensed by Cambustion Ltd. Dr Olfert has been awarded the Sheldon K Friedlander Award, Masao Horiba Award, and Fissan-Pui-TSI Award for his contributions to aerosol science and was a recent recipient of an NSERC Discovery Accelerator.

 문 의 : 멀티스케일 에너지 시스템 연구단 연구지원본부 (☏ 889-6669,6670) 최만수 교수 (기계항공공학부)

미래창조과학부 글로벌 프론티어

멀티스케일 에너지 시스템 연구단/서울대학교