Research Interests:
- Micro- and nano-scale thin film lubricants based on polymer networks that exhibit extremely low friction properties as a result of low interfacial shear stresses. Integrating these films into potential applications in nanoscale material and medical fields.
- Evaluation of polymeric drag reduction in dilute and high concentrated solutions. Determination of the effects in multi-solvent flow and the resulting rate of mechanical degradation. Integration of high concentrated polymeric fluids into dilute solutions and fluidic flow development.
- Investigation into flow over superhydrophobic surfaces and the fluid-vapor-solid interactions at the surface. Characterization of both slip and drag reduction in the fluid using both microfluidic experimentation and rheometry.
Honors and Awards:
- National Research Council Postdoctoral Fellowship at NIST, 2010.
- NSF GK-12 Fellowship, Cornell University, 2009-2010.
Recent Presentations:
- L.J.T. Landherr, C. Cohen, and L.A. Archer, "Thin Film Lubrication of Polymer Brushes," 2010 AIChE conference, Salt Lake City, UT.
- L.J.T. Landherr, C. Cohen, and L.A. Archer, "Thin Film Lubrication Based On PDMS Networks," 2009 AIChE conference, Nashville, TN.
- L.J.T. Landherr, C. Cohen, and L.A. Archer, "Thin Film Lubrication Based On PDMS Networks," 2009 SOR conference, Madison WI.
Publications:
NIST:
- Landherr, L.J.T.; Hudson, S.D.; Migler, K. "Rheology of Complex Fluids on Superhydrophobic Surfaces." In preparation.
Educational:
- Landherr, L.J.T.; Balbierer, K.; Archer, L.A.; Cohen, C. "Advanced Friction and Lubrication Experiments For High School." In preparation.
Thesis:
- Landherr, L.J.T.; Cohen, C.; Agarwal, P.; Archer, L.A. "Interfacial Friction and Adhesion of Polymer Brushes." Langmuir, 2011, 27, 9387-9395.
- Landherr, L.J.T.; Cohen, C.; Archer, L.A. "Effect of Pendent Chains on the Interfacial Properties of Thin Polydimethylsiloxane (PDMS) Networks." Langmuir, 2011, 27, 5944-5952.
- Landherr, L.J.T.; Zhang, Q.; Cohen, C.; Archer, L.A. "Interfacial Friction of Thin PDMS Network Films." J Poly Sci Part B: Poly Phys, 2008, 46, 1773-1787.
- Landherr, L.J.T.; Cohen, C.; Archer, L.A. "Interfacial Friction of Polymer Networks Containing Free Chains." In preparation.
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Position:
Chemical Engineer
Polymers Division
Complex Fluids Group
Employment History:
2010-present, Polymers Division, NIST
Education:
Ph.D., Chemical Engineering, Cornell University, 2010
B.S., Chemical Engineering, Lafayette College, 2005
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