Tilton Group

Complex fluid interfacial phenomena

Our group addresses problems in complex fluid interfacial phenomena. This entails fundamental investigations of the structure and dynamics of macromolecules, surfactants, and composite nanoparticles in suspension or adsorbed at solid or fluid interfaces. It supports application-driven research in environmental nanotechnology, aerosolized carriers for pulmonary drug delivery, lubrication and high efficiency emulsifiers. A recurring theme is the effort to understand phenomena that arise in realistic multicomponent mixtures that normally are not predicted from the behavior of idealized single component systems.

Faculty

Robert Tilton

Robert Tilton

Chevron Professor of Chemical Engineering

A member of the faculty of Carnegie Mellon University since 1992, Robert Tilton holds a joint appointment in the Department of Chemical Engineering and in the Department of Biomedical Engineering, and serves as Director of the Center for Complex Fluids Engineering. He is a Fellow of the American Chemical Society and a Fellow of the American Institute for Medical and Biological Engineering.

 

Publications

For a current list of Professor Tilton’s publications, please visit his ORCID site.

Office
Doherty Hall 2100B
Phone
412.268.1159
Email
tilton@andrew.cmu.edu
Google Scholar
Robert Tilton

Representative research projects

 

Videos

Research team

Diane Nelson

Diane Nelson

Post-Doctorate

Research interests
Droplet interfacial coalescence and solute delivery from perfluorocarbon emulsions
Email
dlnelson@andrew.cmu.edu
Henry Chu

Henry Chu

Post-Doctorate

Research interests
Dispersion, diffusiophoresis and colloidal transport
Email
hcchu@andrew.cmu.edu
Bhagyashree Lele

Bhagyashree Lele

Doctorate

Research interests
Synergistic and antagonistic effects of polymer/surfactant interactions on colloidal depletion forces
Email
blele@andrew.cmu.edu
Danish Iqbal

Danish Iqbal

Doctorate

Research interests
Multi-responsive polyelectrolyte brush-grafted nanoparticles and thin films
Email
diqbal@andrew.cmu.edu
Madeline Sauleda

Madeline Sauleda

Doctorate

Co-Advisor
Steve Garoff
Research interests
Surfactant spreading against endogenous surfactant monolayers
Email
msauleda@andrew.cmu.edu
Tsung-Lin Hsieh

Tsung-Lin Hsieh

Doctorate

Research interests
Marangoni transport synergism in mixed surfactant systems
Email
tsunglih@andrew.cmu.edu
Yilin Zhang

Yilin Zhang

Doctorate

Research interests
Complex copolymer architectures for agrochemical and environmental applications
Email
yilinz1@andrew.cmu.edu
Angela Yang

Angela Yang

Doctorate

Research interests
Diffusiophoresis and super-diffusive transport of complex colloids
Email
angelaya@andrew.cmu.edu

Group alumni

Ph.D. students

  1. Julie L. Robeson, 1995, “Application of Total Internal Reflection Fluorescence to Probe Surface Diffusion and Orientation of Adsorbed Proteins.”
  2. James R. Charron, 1996, “Block Copolymer Adsorption to Phospholipid Monolayers at the Air-Water Interface.”
  3. Edward S. Pagac, 1997, “Colloidal Forces in the Presence of Polymers and Surfactants.”
  4. Michelle Lourette Sun, 1999, “Coadsorption of Strongly Interacting Proteins and Surfactants.”
  5. Joon-Hyung Kim, 1999, “Pyrene Solubilization in Micelles and Polymer-Surfactant Complexes.”
  6. Eric Tsung, 2000, “A Novel Total Internal Reflection Fluorescence Assay for the Catalytic Activity of Adsorbed Enzyme Monolayers.”
  7. Stephanie Butler Velegol, 2000, “Tuning Interfacial and Bulk Self-Assembly of Ionic Surfactants via Counterions and Non-Binding Polyelectrolytes”
  8. Alan Braem, 2001 “Colloidal and Interfacial Phenomena in Polymer/Surfactant Mixtures”
  9. Derek Berglund, 2003, “Tuning Adsorption via Polymer-Surfactant Complexation.”
  10. Susan Daly DiPasquo, 2004, “The Effect of Polyethylene Glycol Modification of Proteins on Adsorption Mechanisms.”
  11. Hao Zhao, 2005, “Electrohydrodynamic Patterning and Separation of Colloids or Cells”
  12. Jason Hamm, 2005, “Redispersion of Polymer Coated Colloidal Aggregates with Changing Solvent Quality”
  13. Marvi Matos, 2006, “Electroosmotic Mass Transport Control in Polyacrylamide Gels via Embedded Silica Nanoparticles”
  14. Jessica Tucker, 2006, “Novel Extracellular Matrix Mimics: Applications in Drug Delivery and protein-Receptor Binding”
  15. Navid Bin Saleh,(Civil & Environmental Engineering), 2007, “An Assessment of Novel Polymeric Coatings to Enhance Transport and in Situ Targeting of Nanoiron for Remediation of Non-Aqueous Phase Liquids (NAPLs)”
  16. Kevin Sirk, 2007, “Polyelectrolyte Surface Modification of Reactive Iron Nanoparticles”
  17. Andy Kusumo, 2008, “High Capacity Polyelectrolyte Brushes for Tuning Protein Adsorption”
  18. Tanapon Phenrat, 2008 (Civil & Environmental Engineering) “Effect of Polymeric Surface Modification on Nano-Sized Zero Valent Iron (NZVI) Aggregation, Transport of Concentrated NZVI Dispersions in Porous Media, and Reactivity with Trichloroethylene”
  19. Hye-Jin Kim, 2009 (Civil & Environmental Engineering) “Transport, reactivity and fate of polyelectrolyte modified zero valent iron nanoparticles used for groundwater remediation in heterogeneous porous media”
  20. Jit Kang Lim, 2009, “Hybrid Magnetic Plasmonic Nanoparticles”
  21. Trishna Saigal, 2011, “Development of Novel Pickering Emulsifiers using Polymer Grafted Nanoparticles”
  22. Sheetal S. Pai, 2011, “Adsorption of Poly(Ethylene Glycol) Conjugated Proteins to Biomaterials used in Delivery”
  23. Teresa L. Kirschling, 2011, “Interactions of Microbial Communities with Engineered Nanoparticles in Environmental Systems”
  24. Stacy M. Wirth, 2013, “Impacts of Silver Nanoparticles on Bacterial Biofilms”
  25. Adam Canady, 2013 “Adsorption of poly(ethylene glycol) conjugated proteins to oil/water interfaces relevant to drug delivery”
  26. Stacey M. Louie, 2014 (Civil & Environmental Engineering) “Characterization and modeling of macromolecules on nanoparticles and their effects on nanoparticle aggregation”
  27. Amsul Khanal, 2014 (Biomedical Engineering) “Spreading of surfactant-laden aerosols on entangled polymer solution subphases”
  28. John K. Riley, 2016, “Friction control by adsorption of polymer brush nanoparticles”
  29. Ramankur Sharma, 2016, “Surfactant-induced Marangoni transport on liquid surfaces”
  30. Alex Bertuccio, 2017, “Metal species and surfactant impact on bacterial populations and community behavior”
  31. Amy Stetten, 2017 (Physics) “Capillary and transport phenomena of liquid drops spreading on miscible liquid subphases”
  32. Brittany Nordmark, 2018 “Efficacy of Moringa oleifera proteins as coagulants in a sustainable sand filter for drinking water treatment”
  33. Yun-Ru Huang, 2018 “Interfacial activity of star polymers at fluid interfaces”
  34. Steven Iasella, 2019 “Effect of surfactant escape on surface transport of hydrophobic solutes during aqueous solution spreading on miscible complex fluid subphases”

 

Former postdoctoral researchers

  1. Nitin Kumar, Ph.D. City College of New York, 2001-2003; Nonionic surfactant adsorption and wetting phenomena
  2. Gunnar Duner, Ph.D. KTH Royal Institute of Technology, 2013 – 2016; Marangoni transport at the oil/water interface