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Mitchell Research Group

Research Interests

bullet Materials Processing
bullet Nanostructured Materials
bullet Fiber Technology
bullet Composites


Nanostructured materials are those materials that have some critical dimension on the order of 100 nanometers or less. In the case of semicrystalline and polycrystalline materials, this is often the crystallite size, but may also include particle size, a.k.a nanoparticles. Nanoparticles are generally formed from either "bottom up" (solution-based or self assembly) or top-down approaches. Dr. Mitchell's research focuses on the production of nanoparticles using a top-down, mechanochemical process. In this process, nanoparticles with unique surface chemistries and electronic properties can be formed. The effect of processing parameters, separation techniques, phase stability and properties of the functionalized nanoparticles are the focus of current investigations.

Current Projects

  • Si Nanoparticles for Biomarkers (Alex Girau)
  • Functionalized Nanoparticle Separation and Solubility (Luigi Verdoni)

Recent Funding

  • NSF/CMMI, “New Surface Chemistries and Process Innovations in the Production of Surface Functionalized Semiconductor Nanoparticles,” with M. Fink and H. Ashbaugh, $350,000, 7/2007 - 6/2011.

Recent Publications

  1. Hallmann, S., M.J. Fink, and B.S. Mitchell, “The Mechanochemical Formation of Functionalized Semiconductor Nanoparticles for Biological, Electronic and Superhydrophobic Surface Applications,” Ceramic Transactions, 229, 129-142 (2011).
  2. Verdoni, L., M.J. Fink, and B.S. Mitchell, “A Fractionation Process of Mechanochemically-Synthesized Blue Luminescent Alkyl-Passivated Silicon Nanoparticles,” Chem. Eng. J., DOI: 10.1016/j.cej.2011.06.033, 72, 591-600 (2011).
  3. Hallmann, S., M.J. Fink, and B.S. Mitchell, “Mechanochemical Synthesis of Functionalized Silicon Nanoparticles with Terminal Chlorine Groups,” J. Mat. Res., 26[8], 1052-1060 (2011).
  4. Hallmann, S., M.J. Fink, and B.S. Mitchell, “Wetting Properties of Silicon Films from Alkyl-Passivated Particles Produced by Mechanochemical Synthesis,” J. Coll. Int. Sci., 348, 634-641 (2010).
  5. Heintz, A.S., M.J. Fink, and B.S. Mitchell, “Silicon Nanoparticles with Chemically Tailored Surfaces,” App. Organometallic Chem., 24[3], 236-240 (2010).
  6. Heintz, A.S., J.E. Gonzales, M.J. Fink, and B.S. Mitchell, “Catalyzed Self-Aldol Reaction of Valeraldehyde via a Mechanochemical Method" J. Mol. Catal. A, 304, 117-120 (2009).
  7. Moster, A.L. and B.S. Mitchell, “Hydration and Proton Conduction in Nafion®/Ceramic Nanocomposite Membranes Produced by Solid State Processing of Powders from Mechanical Attrition,” J. App. Pol. Sci., 113[1] 243-250 (2009).
  8. Schexnaydre, R. and B.S. Mitchell, “Solid State Blending of Poly(ethylene terephthalate) with Polystyrene: Extent of PET Amorphization and Compositional Effects on Crystallization,” J. Pol. Sci. B Pol. Phys., 46[13], 1348-1359 (2008).
  9. Moster, A.L. and B.S. Mitchell, “Mechanical and Hydration Properties of Nafion®/Ceramic Nanocomposite Membranes Produced by Mechanical Attrition,” J. App. Pol. Sci., 111[2] 1144-1150 (2008).
  10. Schexnaydre, R. and B.S. Mitchell, “Solid State Blending of Poly(ethylene terephthalate) with Polystyrene: Extent of Compatibilization and its Dependence on Blend Composition,” Pol. Eng. Sci., 48[4], 649-655 (2008).
  11. Heintz, A., M. Fink and B.S. Mitchell, "Mechanochemical Synthesis of Alkyl/Alkenyl-Passivated Silicon Nanoparticles," Adv. Mat., 19[22], 3984-3988 (2007).
  12. Schexnaydre, R. and B.S. Mitchell, "Synchrotron Infrared Microspectroscopy Characterization of Heterogeneities in Solid-State Blended Polymers," Mat. Let., 61, 2151–2155 (2007).

(Click here for a complete list)

Contact Information

Brian S. Mitchell
Professor, Department of Chemical and Biomolecular Engineering
300 Lindy Claiborne Boggs Center
Tulane University
New Orleans, LA 70118
USA
Telephone: (504) 862-8257
FAX: (504) 865-6744
email: brian@tulane.edu

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Group Fun Stuff

The Extended Family

 

Group Lunch

From Left: Amanda Moster, Javier Gonzalez (LAMP Student), Andrew Heintz,

Brian Mitchell, Ryan Schexnaydre, Cindy and Laurel Hetzer (see below).

Zephyr's Baseball Game
Crawfish Boil

Last updated 1/23/2012

300 Lindy Boggs Center, Tulane University, New Orleans, LA 70118  504-865-5772 ph, 504-865-6744 fax chemeng@tulane.edu