Jim Smay
Associate Professor

TEACHING INTERESTS:
Dr. Smay teaches the introductory materials science class for all engineering disciplines (ENSC 3313).  He is the current instructor for Chemical Engineering Thermodynamics (CHE 3473) and has previously taught Unit Operations Lab (CHE 4002).  

RESEARCH INTERESTS:
Material Science
The Smay group focuses its efforts on colloidal assembly processes to enable novel devices.  The main technique employs the direct writing of colloidal gel based inks.  The inks consist of sub-micron particles of ceramic (Al₂O₃, ZrO₂, SiO₂, BaTiO₂, Pb(Zr_xTi_1-x)O₃, hydroxyl(apatite)), metal (Cu, Ni), and polymer (acrylics, PLGA) suspended in aqueous media.  A number of devices are under investigation based on printing of structures that are difficult or impossible to construct using traditional manufacturing techniques.  These include photonic band gap crystals, bone scaffolds, all-ceramic dental crowns, and metal-ceramic composites.

The smay lab is equipped for powder processing, advanced rheological measurement, thermal treatment of ceramics, metals, and polymers, and particle size and zeta potential measurements.

Publications:

1. Xu, J., Smay, J.E., “Aqueous Carbon Black Colloidal Gel for Direct Write Assembly,” Journal of the American Chemical Society, (2005 in preparation)

2. Xie, B., R.L. Parkhill, W.L. Warren, Smay, J.E., “Synthesis Direct Writing of Three Dimensional Polymer Scaffolds Using Colloidal Gels,” Advanced Functional Materials, (2006 in press)

3. Nadkarni, S., Smay, J.E., “Concentrated Barium Titanate and Barium Zirconate Colloidal Gels for Direct Writing of Periodic Dielectric Structures,” J. of the Am. Ceramic Society, 89(1), 96-103.

4. Simon, J.L., Michna, S., Rekow^, E.D., Thompson,V.P., Smay, J.E., Lewis, J.A.,  Ricci, J.L., Parsons, J.R.,  “Robocast Hydroxyapatite Bone Repair Scaffolds: Evaluating the Effects of Scaffold Architecture on Bone Ingrowth”, Biomaterials, (2005, in review)

5. Lewis, J.A., Smay, J.E., "3-D Periodic Structures", Cellular Ceramics, Edited by: Colombo, P., Scheffler, M., Wiley-VCH, Wienheim, Germany, July 14, 2005, John Wiley & Sons.

6. Smay, J.E., Tuttle, B.A., Cesarano III, J., Lewis, J.A.,  “Directed Colloidal Assembly of Linear and Annular PZT Arrays”, Journal of the American Ceramic Society, 87(2), 293-295, 2004

7.  Clem, P.G., Carroll, J.F., III, Niehaus, M.K., Cesarano, J., III; Smay, J.E.; Lewis, J.A., Lin, S.Y., "Materials for free-form fabrication of GHz tunable dielectric photonic crystals",   Materials Research Society Symposium Proceedings  (2003),  758(Rapid Prototyping Technologies),  41-46.

8. Smay, J.E., Tuttle, B.A., Cesarano III, J., Lewis, J. A., “Piezoelectric Properties of Periodic 3-X Type PZT-Polymer Composites”, Journal of Applied Physics, 92(10), 6119-6127, 2002

9. Smay, J.E., Gratson, G.M., Shepherd, R.F., Lewis, J.A., “Directed Colloidal Assembly of Mesoscale Periodic Structures”, Advanced Materials, 14(18), 1279-1283, 2002

10. Smay, J.E., Cesarano III, J., Lewis, J.A., “Colloidal Inks for Directed Assembly of 3-D Periodic Structures”, Langmuir, 18(14), 5429-37, 2002 (featured cover article)

11. Smay, J.E., Lewis, J.A., “Structure and Property Evolution of Aqueous Lead Zirconate Titanate Thick Films”, Journal of the American Ceramic Society, 84 (11), 2495-2500, 2001

12. Tohver, V., Smay, J.E., Braem, A., Braun, P.V., Lewis, J.A., “Nanoparticle Halos: A New Colloidal Stabilization Mechanism”, Proceedings of the National Academy of Sciences, 98 (16), 8950-8954, 2001 (featured cover article)

13. Tuttle, B.A., Smay, J.E., Cesarano III, J., Lewis, J.A., “Robocast Pb(Zr_0.95Ti_0.05)O₃ Ceramic Monoliths and Composites”, Journal of the American Ceramic Society, 84 (4), 872-874, 2001

14. Smay, J.E., Cesarano III; J., Lin, S.Y., Stuecker, J.N., Lewis, J.A., “Robocasting of photonic band gap structures,” Solid Freeform Fabrication Symposium Proceedings, 175-178, 2001