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Yong L. Joo

  • Yong L. Joo
  • Dept: Chemical and Biomolecular Engineering
  • Title: Professor
  • Address: 340 Olin Hall
  • Phone: 607 255-8591
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Yong Lak Joo is a professor in the School of Chemical & Biomolecular Engineering at Cornell University. He received his B.S. degree at Seoul National University in Korea in 1989, and received his M.S. and Ph.D. in Chemical Engineering at Stanford University in 1993. From 1993 and 1999, he was a senior research engineer at Hanwha Chemical Corporation in Korea. Prior to joining Cornell in 2001, Yong Lak Joo did two years of a postdoctoral research in the Department of Chemical Engineering at MIT.

His research focuses on the integration of molecular details into a macroscopic level in polymeric materials processing. He received a 3M Faculty Award in 2004. He is also a recipient of a National Science Foundation CAREER Award and a DuPont Young Professor Award. He also received an Excellence in Teaching Award in College of Engineering, Cornell University.

Research Interests

Our research focuses on the integration of continuum analysis with molecular details in polymeric materials processing. Areas of current interests include the microstructural rheology and processing of complex fluids, the formation of nanofibers via electrospinning, and the occurrence of viscoelastic instabilities in polymer flows. In particular, we have laid the foundation for new experimental and theoretical studies on nanofiber formation via electrospinning. The resulting nanofibers are collected as non-woven mats with large surface area to volume ratios which can be used in filtration, catalysis, membrane applications and reinforced composites. We develope comprehensive models to provide a fundamental understanding of nanofiber formation and we investigate the material-processing-structure relationship in nanoscale fibers. Nanofibers with controlled nano/microstructures are also being utilized in various fundamental studies such as hydrogen production via alkaline hydrolysis of cellulose.

Teaching Interests

* Graduate Teaching - Mathematical Method in Chemical Engineering; Advanced Fluid Mechanics and Heat Transfer * Undergraduate Teaching - Plant Design; Analysis of Separation Processes

Selected Publications

  • Yin, J., J. M. Carlin, J. Kim, Z. Li, J. H. Park, B. Patel, S. Chakrapani, S. Lee, Yong L. Joo. 2014. "Synergy between Metal Oxide Nanofibers and Graphene Nanoribbons for Rechargeable Lithium-Oxygen Battery Cathodes." Advanced Energy Materials.
  • KIM, Y. S., W. B. Kim, Yong L. Joo. 2014. "Further Improvement of Battery Performance via Charge Transfer Enhanced by Solution-based Antimony Doping into Tin Dioxide Nanofiber." Journal of Materials Chemistry A 2: 8323-8327.
  • Kim, Y. S., K. W. Kim, D. Cho, N. S. Hansen, Yong L. Joo. 2014. "Silicon-rich carbon nanofibers from water-based spinning: the synergy between silicon and carbon for Li-ion battery anode application." ChemElectroChem 1: 220-226.
  • Park, J. H., Yong L. Joo. 2014. "Tailoring Nanorod Alignment in a Polymer Matrix by Elongational Flow under Confinement: Simulation, Experiments, and Surface Enhanced Raman Scattering Application." Soft Matter 10: 3494 - 3505.
  • Park, J. H., J. Yin, V. Kalra, Yong L. Joo. 2014. "Role of Nanoparticle Selectivity in the Symmetry Breaking of Cylindrically Confined Block Copolymers." Journal of Physical Chemistry C 118: 7653-7668.

Selected Awards and Honors

  • Suktap Excellence in Teaching Award (Korea University) 2007
  • Micheal Tien '72 Excellence in Teaching Award (Cornell University) 2006
  • DuPont Young Professor Award (DuPont) 2005
  • National Science Foundation CAREER Award (National Science Foundation) 2005
  • 3M Faculty Award (3M Corporation) 2004


  • BS (Chemical Engineering), Seoul National University, 1989
  • MS (Chemical Engineering), Stanford University, 1990
  • Ph D (Chemical Engineering), Stanford University, 1993