Professor Privman Models the Synthesis of Monodispersed Fine Particles
Vladimir Privman, of Clarkson University's Departments of Physics
and Electrical & Computer Engineering, is modeling the synthesis
of monodispersed fine particles. The goals of this project also
include extension of the know-how in the preparation of monodispersed
colloids to nanosize particles. (See
Figure 8.) In earlier work with Professor Matijevic''s
group at CAMP, Professor Privman and coworkers developed a model
that explains narrow size distribution in the formation of colloid-dimension
(~ 1mm) particles via a two-stage growth:
burst nucleation of nanosize (~ 10 nm) subunits, followed by their
aggregation into larger secondary particles. The Solid State Chemistry
program of the National Science Foundation, recently funded an extensive
multidisciplinary research effort at CAMP. The goal of this project
is to explore a broad spectrum of topics, in a unified approach,
to control particle size and other properties from the nanoscale
to the colloidal scale. Experimental work is being carried out by
Professors Borkovec, Goia and Matijevic'. Professor Privman is coordinating
the theoretical modeling component of the project, which has also
received additional funding from the Petroleum Research Fund.
8: Calculated particle size distributions
Professor Privman is the Director of the Center for Quantum Device
Technology at Clarkson University. Research at the Center will utilize
the principles of quantum physics to build computers that are much
smaller and faster than current models. Professor Privman has been
working closely with scientists at Harvard University to create
a working model of a quantum computer.
For more information
about Professor Privman and his research, you may call him at 315-268-3891
or send e-mail to firstname.lastname@example.org.
Dan Goia Joins CAMP's Research Team on Fine Particles
Dr. Dan Goia
recently joined CAMP as a Research Associate Professor. He received
his Ph.D. in Chemistry in 1998 from Clarkson University under the
mentorship of Professor Egon Matijevic' (the Victor K. LaMer Chair
in Colloid and Surface Science) and has over twenty years of industrial
experience in the area of fine and ultra fine particles (metals,
metal oxides, pigments, drugs). For the past twelve years he managed
the research and development activities of Degussa's Electronic
Materials Division and since 1998 held the position of R & D Director.
He extended this Directorship to Degussa-Huels' successor company
"dmc2," a technological and market leader in the field of metallic
particles for electronic applications.
achievements while Dr. Goia served as Director of R & D at Degussa-Huels
and dmc2 include a novel, entirely "water-based" process to manufacture
low-cost / high- performance / silver flakes, novel processes capable
of producing cost effectively monodispersed precious (Pt, Ag, Ag/Pd,
Au) and base metal (Ni, Cu) powders in a very wide range of sizes
(50 nanometers to several micrometers), new processes capable of
yielding stable dispersions of precious metal particles that can
be successfully used as precursors for high-performance heterogeneous
catalysts, a process capable of producing low-cost, ultra fine,
highly crystalline barium titanate powder for electronic applications,
and environmentally friendly processes to deposit films of precious
metals onto metallic and nonmetallic substrates.
9: Monodispersed Metallic Particles (a. Monodispersed particles
of palladium - 200 nm , b. Monodispersed particles of gold - 3 mm
, c. Monodispersed particles of Ag / Pd alloy - 1.0 um).
Goia has made significant theoretical and practical contributions
in the area of chemical precipitation, especially of highly monodispersed
metallic particles. These materials are characterized by a high
degree of control over their critical properties such as particle
size, size distribution, morphology, internal structure, and composition.
These metallic particles are used extensively in catalysis and electronics.
(See Figure 9.) Other emerging
applications for these particles are in high-density magnetic storage,
decorative applications, transparent conductive coatings, ferromagnetic
fluids, biology, and in medicine. Professor Goia's role at CAMP
is to help strengthen existing contacts between CAMP and its industrial
partners, and to initiate contacts and nurture relations with new
partners in new technological fields. His plans include the establishment
of a "Research Center for Metallic Particles" (a new focus area
For more information
about Professor Goia, you may call him at 315-268-4411 or send e-mail