International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators
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AP/AM-04 MeV Ion Beam Assisted Formation of Pseudo-Crystals D. Ila, R.L. Zimmerman, and C. Muntele Center for Irradiation of Materials, Alabama A&M University, Normal, United States of America Corresponding Author: ila@aamuri.aamu.edu For the past fifteen years, we have formed nanostructure in the MeV ion beam track in order
to fabricate pseudo-crystals consisting of nanostructures. The focus of our work is based on the
energy deposited due to ionization in order to produce quantum dots or nano-structures resulting
to production of pseudo-crystal consisting of nano-crystals with applications in optical devices as
well as with applications in highly efficient thermoelectric Materials. The interacting nanocrystals
enhance the electrical conductivity, reduce thermal conductivity and increase the Seebeck coefficient,
in order to produce highly efficient thermoelectric materials. Theoretically, the regimented
quantum dot superlattice/pseudo-crystals consisting of nanostructures of any materials produces
new physical properties such as new electrical band structure, phonon mini-bands, as well as improved
mechanical. A proper choice of nanocrystals, host and buffer layer result in production of
highly efficient thermoelectric generator (TEG)*
with efficiencies as high as 30% which correspond
to figure of merit above 4.0. In addition to above such systems are in a unique position to be
used both as electrical generation from heat and/or other forms of radiation as well as cooling the
structures, thus enhance the applicability of hybrid systems. *
Patent filed/Patent Pending.
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