WSU Tri-Cities

Event Calendars

JESS seminar, Colloidal Disperson, 12 p.m., East Auditorium

Seminar to be presented by Dr. Jaehun Chun with the Pacific Northwest National Laboratory.

Colloidal dispersion has been a subject of great interest in fundamental science. More importantly, it is very important in a wide range of engineering applications such as emulsion polymerizations, food, paints, printing ink, floatation, insulating foam, and nuclear waste processing. For most cases, scales involved in colloidal dispersion are surprisingly wide, ranging from several angstrom to tens of micrometers, and the physics at different scales are closely inter-correlated. Physical insights in colloidal dispersion are often obtained by scrutinizing physicochemical interactions which arise both from colloidal and hydrodynamic interactions. In this talk, we will explore the role of physicochemical interactions on behaviors of colloidal dispersion through two distinct examples. The first is related to nuclear waste processing, a rheological control
of nuclear waste slurries, and the second is related to air pollution/cloud physics, the coagulation of aerosols. Both examples will illustrate that the physicochemical interactions link physical phenomena at different length scales.

The Joint Engineering and Science Seminar (JESS) series is an interdisciplinary effort of the College of Arts and Sciences and the Office of Professional Programs at WSU Tri-Cities. Admission is free and open to the public; graduate students, post-docs and professionals are especially encouraged to attend.

Dr. Jaehun Chun is a Senior Research Scientist at PNNL. He earned Ph.D. in Chemical Engineering from
Cornell and performed postdoctoral research at Princeton and NIST. His research interests include energetics and dynamics of structured fluids for energy and environmental applications. He is an author of many papers in peer-review journals including Physical Review Letters. He has also been serving in many professional activities such as a NSF review panel in Particulate Multiphase Processes under CBET.

For more information, contact:
Dr. Yonas Demissie
Assistant Professor of Civil & Environmental Engineering
West 128


Nikolaos Voulgarakis, Ph.D.
Assistant Professor of Mathematics
CIC 125G

Friday, September 27, 2013 - 12:00pm to 1:00pm