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icon_font.jpg  Research areas


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icon.jpg  PM2.5 Research Consortium supported by National Research Foundation of Korea (2014-2017) and MSIP, Korea


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icon.jpg  National Leading Research Lab (NLRL) supported by National Research Foundation of Korea (2011-2016) 

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center_t_blt.gif Development of real-time aerosol measurement techniques (Tandem measurment techniques (HTDMA, VTDMA,

   DMA-PSD, and etc.), Aerosol Focusing Laser Induced Breakdwon Spectroscopy (LIBS), Aerosol Mass Spectrometry

   (AMS), Membrane Filtration-DMA technique, CCN counter).

 

center_t_blt.gif Atmospheric aerosol measurments (nanoparticles, ultrafine particles, Asian Dust particles, marine aerosols)

 

center_t_blt.gif Studies on atmosperhic ultrafine particle formation and growth mechanism

 

center_t_blt.gif Characterization of nanoparticles and submirometer particles in water or seawater.

 

center_t_blt.gif Better understanding aerosol effects on climate change and human health


We provide fundamental properties and improved scientific knowledge of atmospheric aerosol particles which play an important role inradiation balance, climate change, cloud formation, visibility impairment, atmospheric heterogeneous reaction, and adverse human health. Nanoparticle formation and growth in the ambient atmosphere, physical and chemical characterization of the ambient aerosol particles, development of new aerosol measurement techniques, and heterogeneous reaction of particles are the major research areas in the Aerosol Nanoparticle Technology Laboratory. Furthermore, the new aerosol and nanoparticle measurement techniques can be appled for particle contamination controls in semiconductor manufacturing, new material developments and coating using nanoparticles, nanoparticle generation/synthesis, and so on.



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Ultrafine particle concentration (3-100 nm) in different size intervals was continuously measured in summer (7/6/2006-8/17/2006), fall (10/1/2006-10/31/2006), winter (2/2/2007-3/7/2007), and spring (4/7/2007-5/7/2007) at Gwangju, Korea. We observed distinct season patterns for ultrafine particle concentration with higher concentration of ultrafine particles in summer and winter than spring and fall. Particles of 50-80 nm probably due to traffics and residential heating led to enhanced ultrafine particle concentration in winter, while in summer particles of 10-30 nm formed by photochemical activity led to increased ultrafine particle concentration. The N (10-30 nm) in summer peaked broadly between 11:00and 14:00, consistent with peak times of O3 concentration and solar radiationintensity. Three types of ultrafine particle events were reported when enhancedultrafine particle number concentration was observed. According to the size range with elevated concentration and hypothesized source or formation pathways, we classified ultrafine particle events into: 1) “10-100 nm traffic event”, 2) “50-100 nm residential heating event”, and 3) “10-30 nm photochemical event”. The maximum ultrafine particle number concentration in the photochemical eventwas 2.5×10^4 #/cm3 with the average of 8.8×10^3 #/cm3, while in the traffic eventthe maximum was 1.4×10^4 #/cm3 with the average of 7.4×10^3 #/cm3. In the traffic event, the high concentration of ultrafine particles is consistent with increased concentrations of NOx and CO.img6.gif We occasionally observed particle growth after formation of particles in the “10-30 nm photochemical event”.Morphological and elemental analysis by TEM and EDS for size-selected particlesduring ultrafine particle events showed that mixtures of sulfate, metals, and carbonaceous materials were abundant in the photochemical event, and that agglomerated soot particles were often detected in the traffic event.



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icon.jpg  여기까지 보셨으면 저희랩에 충분히 지원가능하시고 열정적으로 연구를 하실걸로 생각합니다. 어느학과 졸업생이 지원가능하나요? 라는 질문에 대한 답변은 아래에...


기계공학과: 지도교수도 기계공학과출신입니다.
-환경공학과: 학과가 환경공학과이므로.
-화학공학과, 화학과, 대기과학과: 대기중 에어로졸 입자의 화학조성, 반응 연구, 대기오염 등 모두 매우 밀접한 관계가 있습니다.
-기타 이공학과, 자연계 모두: 중요한 것은 하고 싶은 그 정열이니까요.. 또한 본 연구실의 연구목표는 물리, 유체역학, 수학, 화학, 열역학 등의 기본적인 이론을 실시간 에어로졸 나노입자 측정기술과 분석, 입자생성 및 성장, 기후변화영향 파악이라는 실체로 변화시키는 것입니다.  즉, 기본이론과 실제 응용가능한 기술을 동일하게 중요
시 합니다

RESEARCH