Biomolecular Science - Dan Goia

Goia Dan Goia
Associate Professor
Chemistry
344 CAMP
Clarkson University
PO Box 5810
Potsdam, NY 13699-5810
Phone: 315-268-4411
E-mail: goiadanv@clarkson.edu

Educational Background
Ph.D. Chemistry, Clarkson University, 1998
M.S. Chemistry, University of Cluj, Romania, 1980
B.S. Chemistry, University of Cluj, Romania, 1979

Research Interests
Our research is focused mainly on the synthesis, characterization, and modification of highly dispersed uniform micrometer, submicrometer, and nanometer size metallic particles with well controlled size, morphology, internal structure, composition, and surface properties. While our efforts are mostly concentrated on the development of chemical precipitation processes capable of yielding high performance materials for existing and emerging applications, we also conduct the basic research needed to understand the mechanisms responsible for the formation of uniform metallic particles in solutions. In regard with the first aspect, we have successfully developed many novel precipitation methods for generating economically highly dispersed metallic particles of Cu, Ni, Co, Bi, Ag, Au, Pd, Pt, and their alloys for applications in electronics, energy conversion and storage (PEM and SO fuel cells), medicine and biology, emissions control, sensors, and metallurgy. At the same time, our experimental and modeling work on spherical gold particles has contributed to the understanding of the formation mechanism of large uniform colloids in homogeneous solutions by aggregation of nanosize precursors and has resulted in a model that is now widely accepted by the scientific community and is frequently cited in the literature. More recently, under a new three-year grant from NSF we have started to investigate the formation by the same mechanism of uniform anisotropic particles (platelets, rods, ellipsoids, cubes, etc.), a topic of extreme importance for science and technology.

Another rather unique expertise of our group consists in the ability to convert ultrafine uniform metallic particles into metallic platelets/flakes by physical processes. Although under-researched, this interdisciplinary area bordering colloid and surface science, physics, and metallurgy has a significant impact on many applications in defense (obscurant smokes) and electronics. Finally, our knowledge and experience in the preparation and modification of fine metallic particles represents a solid foundation that allows us to do independent research as well as to collaborate effectively with various research groups and companies involved in the development of metallic dispersions and inks for applications in electronics, pigments, catalysis, photonics, coatings, and sensors.


Publications & Patents for the last 6 months

  • "Preparation of colloidal bismuth particles in polyols," C. Goia, E. Matijević, D.V.Goia, J. Mater. Res., 20, 1507-1514 (2005).
  • "Preparation and Mechanisms of Formation of Silver Particles of Different Morphologies in Homogeneous Solutions," L. Suber, Sondi, I., Goia, D.V., E. Matijević, J. of Colloid and Interface Science, 288, 489-495 (2005).
  • "Colloidal Gold: A Novel Nanoparticle Vector for Tumor Directed Drug Delivery," G. F. Paciotti, L. Myer, D. Weinreich, D.V. Goia, N. Pavel, R. E. McLaughlin, L. Tamarkin, Drug Delivery, 11, 169-183 (2004).
  • "Preparation and Formation Mechanisms of uniform metallic Particles in Homogeneous Solutions," Goia, D.V., Invited review: Journal of Materials Chemistry, 14, 451-458 (2003).
  • "Internally Composite Uniform Colloidal Cadmium Sulfide Spheres," S. Libert, D. Goia, E. Matijević, Langmuir, 19, 10673-10678, (2003).
  • "Method for producing ultra-fine metal flakes' C. Goia, Dan. V. Goia, U.S. Patent application #11/080192, March 15, 2005.
  • 'A new process of making multilayer device's, D.V. Goia, B. Farrell, C. Eastman, U.S. Patent application #60/661,717, March 15, 2005.
  • 'Polyol-based method for producing ultrafine copper powders', Goia, D.V., Andreescu, D., Farrell, B., U.S. Patent application #10/981,077, November 3, 2004.
  • 'Polyol-based method for producing ultrafine nickel powders', Goia, D.V., Andreescu, D., Farrell, B., U.S. Patent application #10/981,083, November 3, 2004.
  • 'Polyol-based method for producing ultrafine silver powders', Goia, D.V., Kim, S-M., U.S. Patent application # 10/981,110, November 3, 2004.
  • 'Aqueous-based method for producing ultrafine silver powders', Goia, D.V., Andreescu, D., Eastman, C., U.S. Patent application #10/981,074, November 3 C. Goia, Dan. V. Goia,, 2004.
  • 'Process for manufacture of platinum based catalysts for fuel cells', Goia, D.V., Lopez, M., Sau, T. K., Jitianu, M., pending U.S. Patent, application submitted October 27, 2004.
  • 'Noble metal nanoparticles, a process for preparing these and their use', Starz, K-A., Goia, D.V., Koehler, J., Banisch, V., USP 0034675 A1, (2002), 7 pp.


Presentations given

  • "Preparation of Highly Anisotropic Conductive Metallic Particles," U.S. Army's Obscurant Smokes Workshop, Orlando, Fl, June 7-9, 2005.
  • "Novel Ag and AgPd Nanoparticles for MLCC's with Ultrathin Electrodes," B. Farrell, D. Andreescu, C. Eastman, D.V. Goia, 25th Symposium for Passive Components, CARTS, Palm Springs, CA, March 21-24, 2005.
  • " Copper Powders and Flakes for Electronic Applications," D. Andreescu, C. Goia, D.V. Goia, 25th Symposium for Passive Components, CARTS, Palm Springs, CA, March 21-24, 2005.
  • "Tailoring the Properties of Highly Uniform Metallic Particles," 4th International Conference of the Chemical Societies of the South-Eastern European Countries, Belgrade, Serbia and Montenegro, 18 July 2004.
  • "Metal Powders with Controlled Properties for Advanced Technologies," University of Ljubljana, Ljubljana, Slovenia, May 25, 2004.
  • "Preparation of Highly Anisotropic Conductive Metal and Metal Composite Particles by Physical and Chemical Means," U.S. Army 'Obscurant Smokes Workshop', Aberdeen, June 25, 2004.
  • "Preparation of Highly Uniform, Nonagglomerated Crystalline Ni Powders for BM-MLCC Applications," 18 TH Annual European Passive Components Conference, Nice, France, October 18-21 2004.
  • "Chemical Precipitation of Ultrafine and Nanosize Monodispersed Metallic Particles: Principles, Capabilities, and Limitations," 2003 International Conference in Nanotechnology and PM 2, Providence, Rhode Island, September 17-18, 2003.
  • "Preparation of Highly Uniform, Nonagglomerated Crystalline Ni Powders for BM-MLCC Applications," CARTS Europe 2003, Stuttgart, Germany, October 26-29, 2003.
  • "Preparation, Properties, and Applications of Monodispersed Metallic Particles," University of Cluj, Romania, June 30, 2003.
  • "Preparation and properties of Highly Dispersed Metallic Particles," University of Darmstadt, Germany, October 24, 2003.


Facilities

  • Joel 2010 high resolution Scanning Transmission Electron Microscope
  • Joel 7400 high resolution Field Emission Electron Microscope
  • Bruker D8 X-Ray Diffractometer
  • Malvern 2000 Laser diffraction particle size analyzer
  • ALV Simultaneous Static and Dynamic Light Scattering Analyzer


Student Information

Postdocs

  • Mihaela Jitianu (Preparation of electrocatalysts for PEM fuel cells and automotive applications)
  • Daniel Andreescu (Preparation of highly dispersed metallic powders for electronic applications)
  • Corina Goia (Development of high aspect conductive metallic nanoparticles for defense applications)


Grad Students

  • Brendan Farrell (Formation mechanisms of anisotropic metallic particles in homogeneous solutions)
  • Duy Le (Preparation of anisotropic metallic particles and metallic coatings by galvanic displacement)
  • Krishna C. Balantrapu (Development of highly dispersed silver nanoparticles)


Undergraduate Students

  • Benjamin Morrow 2006, Chemistry (Synthesis of uniform gold nanoplatelets)
  • Sarah Roland 2008, Chemistry (Preparation of silver and silver/palladium alloy flakes by chemical precipitation)


Recent Graduates

  • Christopher Eastman (MS 2005), GE R&D Center, Schenectady, NY

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