Folwell Components

Welcome to ET-Lab!
4D imaging of a clay aggregate
Bacterial spreading in soils

Welcome to the Environmental Transport Lab (ET-Lab) led by Dr. Judy Yang. Our lab studies the transport of water, soil, chemicals, and bacteria in nature. We design flume, microfluidic, and other experiments to simulate complex natural environment. We apply fluid mechanics and biogeochemistry to understand and predict sediment transport and landscape evolution,contaminants and carbon transport in soil, as well as bacterial spreading. Motivated doctoral students, undergraduates, and postdoc scholars are welcome to directly contact Judy (


Research Highlights

Sept 2021: Our paper about “Evidence for biosurfactant-induced flow in corners and bacterial spreading in unsaturated porous media” is published on PNAS

Jan 2021: Our paper “4D imaging reveals mechanisms of clay carbon protection and release" is published in Nature Communications and highlighted Science Daily and other over 10 news outlets!

Our study was interviewed by The and mentioned in Quanta Magazine

May 2019: Our study on sediment transport was published in Geophysical Research Letters and highlighted in EOS Research Spotlight: "New Study Shifts Paradigm of Coastal Sediment Modeling"