Postdoctoral Fellows
Amanda L. Mifflin
Chongzheng Na
John Shilling
Marcelo Guzman
Yuanzhi Tang
Thomas Rosenoern

Graduate Students
Stephanie King
Qi Chen
Mackenzie Smith

Undergraduates
 

Alumni
Undergraduates
Graduate Students
Postdoctoral Associates
Visitors
Research Technicians

Former Postdoctral Fellow

1. Dr. Hui-Ming Hung was a research associate from 4/1/00 to 7/31/04.

She holds BS and MS degrees in Chemistry from National Taiwan University and a Ph.D. degree from Caltech under Prof. Michael Hoffmann.

As a postdoctoral fellow (2000-2004), Hui-Ming Hung worked on the phase transition of aerosol particles, which includes ice formation and crystallization of aqueous particles in addition to the oxidation of unsaturated fatty acid. She used an aerosol flow tube IR system to determine the ice nucleation from ammonium sulfate aqueous particles and ammonium sulfate with mineral dust cores via homogeneous and heterogeneous nucleation processes respectively. She derived the nucleation rates for the temperature regions where IR spectra showed significant variation. This study provide model quantitative nucleation information for the cirrus cloud formation in the upper troposphere. In the oxidation of organic aerosol project, she employed ATR-IR to monitor the oxidation of oleic acid droplets and also used ESEM to monitor the variation in hygroscopic properties for the oleic droplets before and after exposure to ozone and nitrate radical. This work provided quantitative kinetic and mechanistic information of the possible organic oxidation process in the atmosphere. she is an assistant professor in the Department of Atmospheric Sciences at National Taiwan University.

2. Dr. Yasmine Katrib was a postdoctoral fellow from 9/1/02 to 6/30/05.

She holds a MS degree from Université Louis Pasteur (Strasbourg, France), an engineering diploma from Ecole Européenne de Chimie Polymères et Materiaux de Strasbourg, and a Ph.D. degree from Université Louis Pasteur under Prof. Philippe Mirabel. She was the recipient of the Dreyfus Postdoctoral Award in Environmental Chemistry. She is an associate professor at the Laboratoire Inter-Universitaire des Systèmes Atmosphériques, Université Paris 12.

3. Dr. Xiang Zhang was a postdoctoral fellow working in the exobiology project from 7/1/03 to 7/31/06.

He holds a Ph.D degree from Rutgers in 2001, and a B.S. degree from Tsinghua University in P.R.China.

4. Dr. Treavor Kendall was a postdoctoral fellow from 6/1/03 to 7/1/06.

He holds degrees from Virginia Tech (Ph.D. Geochemistry/Biogeochemistry), University of Montana - Missoula (M.S. Geochemistry) and University of Texas at Austin (B.S. Geological Sciences). As a postdoctoral fellow (2003-2006), Treavor Kendall employed direct molecular level observations of the mobility and behavior of surface ions as they are being solvated and released from the surface. These phenomena were probed using the polarization forces between a modified, electrically biased AFM tip and the sample surface. Such measurements are sensitive to the key steps of dissolution reactions, including ion hydration, surface migration, and surface desorption. His work revealed an anti-correlation between carbonate surface ion mobility and dissolution rate. For example, MgCO3 has the fastest mobile ion time response but dissolves the slowest. This observation was rationalized by a difference in the interaction and hydration of individual cations on the carbonate surface. His work provided quantitative mechanistic information on carbonate dissolution, providing new insights for describing geochemical processes in environments ranging from deep carbonate reservoirs to shallow calcareous soils to atmospheric dust particles. Now an assistant professor at Clemson University.
(http://people.clemson.edu/~treavok/)

5. Dr. Dwane Paulsen was a postdoctoral fellow from 1/15/05 to 1/15/07.

6. Dr. George Biskos was a postdoctoral fellow from 4/1/04 to 8/1/07.

He is now an assistant professor at the University of Delft, Netherlands.

7. Dr. Jun Wang was a postdoctoral fellow from 10/1/05 to 9/1/07.

As a postdoctoral fellow (Oct. 2005 - Sep. 2007) under the support of NOAA Climate and Global Change program, Jun Wang studied two research topics: (a) the effect of aerosol mixing data and hygroscopicity on the satellite characterization of urban aerosols and, (b) the effect of sulfate phase transition on climate forcing. In his research, he used the radiative transfer model and global chemistry transport model (GEOS-Chem) in conjunction with the lab-based aerosol chemistry data. His work is among the first of considering explicitly in the model simulation the hysteresis loop of sulfate phase transition. He is now an assistant professor in University of Nebraska - Lincoln. (http://www.geosciences.unl.edu/~jwang)