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o.obi@northeastern.edu

Profile

Ogheneyunume (Yunume) Obi

Senior Research Scientist, Kostas Research Institute
781.238.8436
360 KRI
141 South Bedford Street
Burlington, MA 01803

Biography

Research & Scholarship Interests

Development of next generation materials and composites (magnetic, magnetoelectric, multiferroic, multifunctional metamaterials) with emphasis on RF device applications; integration of novel advanced materials as a foundation for new technologies

Selected Publications

  • O. Obi, Y. Chen, L. Burns, H. Chang, V. G. Harris, "Improved Texture of Polycrystalline Hexaferrites Using Gluconic Acid Dispersant " J. Appl. Phys. 115, 17A708 (2014)
  • O. Obi, L. Burns, Y. Chen, T. Fitchorov, S. Kim, K. Hsu, D. Heiman, L. H. Lewis, and V. G. Harris, “Magnetic and Structural Properties of Heat-treated High-moment Mechanically Alloyed MnAlC Powders” Journal of Alloys and Compounds 582, 598 (2014)
  • Z. Zhou, O. Obi (co-first author), T. Nan, S. Beghun, S. Stoute, J. Lou, X. Yang, Y. Gao, M. Li, S. Rand, N.X. Sun, G. Esteves, K. Nittala, J. L. Jones, K. Mahalingam, M. Liu, and G. J. Brown, “Low-temperature Spin-spray Deposited Ferrite/Piezoelectric Thin Film Multiferroic Heterostructures with Strong Magnetoelectric Coupling” Journal of Materials Science: Materials in Electronics, 25, 1188 (2014)
  • O. Obi, Z. Zhou, S. Beghun, T. Nan, S. Stoute, M. Liu, J. Lou, X. Yang, Y. Gao, M. Li, X. Xing, N.X. Sun, J. Warzywoda, A. Sacco Jr., T. Guo, C. Nan, "Growth Behaviors and Characteristics of Low Temperature Spin-sprayed ZnO and Al-doped ZnO Microstructures", J Mater Sci: Mater Electron, 24, 2058, (2013)
  • G. M. Yang, O. Obi, and N. X. Sun, "Enhancing Ground Plane Immunity of Dipole Antennas with Spin-spray Deposited Lossy Ferrite Films", Microwave and Optical Technology Letters, 54, 230 (2012)
  • O. Obi, M. Liu, J. Lou, S. Stoute, X. Xing, N. X. Sun, J. Warzywoda, A. Sacco Jr., D. E. Oates, and G. F. Dionne, “Spin-spray Deposited NiZn-Ferrite Films Exhibiting µr’>50 at GHz Range”, J. Appl. Phys., 109, 07E527 (2011)
  • G. M. Yang, X. Xing, A. Daigle, O. Obi, M. Liu, J. Lou, S. Stoute, K. Naishadham, and Nian X. Sun, "Planar Annular Ring Antennas with Multilayer Self-biased NiCo-Ferrite Films Loading", IEEE Trans. Antennas and Propagation, 58, 648 (2010)
  • M. Liu, O. Obi, J. Lou, Y. Chen, Z. Cai, S. Stoute, M. Espanol, M. Lew, X. Situ, K. S. Ziemer, V. G. Harris, N. X. Sun "Giant Electric Field Tuning of Magnetic Properties in Multiferroic Ferrite/Ferroelectric Heterostructures", Advanced Functional Materials, 19, 1826 (2009)