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Research Interests The research topics in our group are built around the interdisciplinary broad themes of energy storage, materials and environmental chemistry and are particularly aimed at the rational design, characterization of novel functional nanomaterials and their integration into various types of nanodevices. 1. Bottom-up synthesis of metal and metal oxide nanoparticles. A first area of emphasis is the development of novel chemical routes for the synthesis of nanoparticles of technological interest. To this end, we combine simple concepts at the interface between materials, nanotechnology and inorganic chemistry enabling us to understand the fundamental issues of the growth and structural assembly of the nanocrystals.
Morphological features of monodisperse metal oxide nanoparticles obtained in aqueous and non-aqueous media 2. Thin films and coatings.
Another targeted area of interest involves the fabrication of high quality thin films by soft solution methods. Our research on chemically deposited thin-films is a key prerequisite for the development of new functional materials and devices. Recent research efforts have been focused on the low temperature chemical deposition of semiconductor and magnetic metal oxide thin films with controllable morphology and predictable properties. These films can serve as building blocks for the design of complex architectures such as multicomponent metal oxide films with graded composition and nanocomposite multiferroic structures.
Morphological features of highly uniform metal oxide films deposited by liquid phase deposition. Our group is part of the Advanced Materials Research Institute (AMRI), a multidisciplinary materials institute that combines the interests of academic, government and industrial scientits (www.amri.uno.edu).
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Selected Publications "Molybdophosphonate Clusters as Building Blocks in the Oxomolybdate-Organodiphosphonate/Cobalt(II)-Organoimine System: Structural Influences of Secondary Metal Coordination Preferences and Diphosphonate Tether Lengths," Armatas, N. G.; Allis, D. G.; Prosvirin, A.; Caruntu, G.; O'Connor, C. J.; Dunbar, K.; Zubieta, J. Inorg. Chem.; 2008; 47(3); 832. "Nanostructures and colloidal self-assemblies," Caruntu, G.; Caruntu, D.; O’Connor, C.J. in “Scanning Electron Microscopy in Nanotechnology: Principles and Applications”-Springer, New York (2007). "Wet Chemistry Processing Routes of Ultrafine Magnetic Particles," Caruntu, D.; Caruntu, G.; O’Connor, C.J. in “Recent Advances in the Solution-Based Synthesis of Nanoscale Metal, Semiconductor and Oxide Nanoparticles” Research SignPost, Kerala, India (2008). "Liquid Phase Synthesis of Inorganic Nanoparticles," Caruntu, G.; Caruntu, D.; O’Connor, C.J. in “Nanomaterials: Inorganic and Bioinorganic Perspectives”, John Wiley& Sons, Ltd. (2008). "Transition Metal Ferrite Nanocrystals: Synthesis and Applications," Caruntu, D.; Caruntu, G.; Ganju, D.; O’Connor, C.J. in “Metal Oxide Nanostructures and Their Applications”, American Scientific Publishers (2008). "Magnetic properties of variable-sized Fe3O4 nanoparticles synthesized from non-aqueous homogeneous solutions of polyols," Caruntu, D.; Caruntu, G.; O’Connor, C.J. Phys D.: Appl. Phys. 2007, 40(19), 5801. "Magnetic properties of nanostructured CoxFe3−xO4 (0 < x < 0.2) thin films obtained by a low-temperature soft solution processing method," Caruntu, G.; Newell, Adele; Caruntu, D.; O'Connor, C. J. J. Alloys and Compounds 2007,434-435, 637. "Annealing effects on the crystallite size and dielectric properties of ultrafine Ba1-xSrxTiO3 (0 < x < 1) powders synthesized through an oxalate-complex precursor," Caruntu, G.; Rarig, R.; Dumitru; O'Connor, C. J. J. Mater. Chem. 2006, 16(8), 752. "Magnetic characterization of nanocrystalline nickel ferrite films processed by a spin-spraying method," Caruntu, G.; Dumitru, I.; Bush, G.G.; D. Caruntu, D.; O'Connor, C.J. J. Phys. D: Appl. Phys. 2005, 38 (6), 811. Haider, M. B. ; Yang, R.; Al-Brithen, H.; Constantin, C.; Ingram, D. C.; Smith, A. R.; Caruntu, G.; O'Connor, C. J. J. Cryst. Growth 2005, 285(3), 300. "Dependence of Magnetic Properties on the growth conditions of MnGaN growth by rf-plasma molecular beam epitaxy," Haider, M.B.; Constantin, C.; Al-Brithen, H.; Caruntu, G.; O'Connor, C.J.; Smith, A.R. Physica Status Solidi (a) 2005, 202(6), 1135. "Attachment of gold nanograins onto colloidal Fe3O4 nanocrystals," Caruntu, D.; Cushing, B. L.; Caruntu, G.; O'Connor, C. J. Chem. Mater. 2005, 17(13), 3398.
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