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I have spent the last 15 years working for high-technology startups centered around universities and the SBIR/STTR program. I am an expert in optical experiments with automated computer control using digital and analog data acquisition hardware and LabVIEW software. I worked at the University of Oklahoma in multiple cleanroom facilities doing characterization and fabrication of nanomaterials for the infrared spectrum. I also spent 18 months working as a post-doctoral engineer on visible and UV light systems for microfabrication in the labs at the formerly renamed Liquid Crystal Institute at Kent State.

I have worked in multiple scientific fields for a combination of both commercial and university groups. I have applied my knowledge of CAD design, fabrication, optics,and many types of software programming for peer-reviewed papers in chemistry, physics, biomedicine, veterinary medicine, and geology.

Patent and Application

  • C. Roller, K. Namjou, and J. D. Jeffers, “Method and apparatus for determining gas concentration”, U.S. Patent No. 7,192,782
  • C. Roller, K. Namjou, and J.D. Jeffers, “Method and apparatus for determining marker gas concentration using an internal standard”, U.S. Patent Application No. 20070081162 (filed April 12, 2007)
  • Peer Reviewed Journal

  • J. D. Jeffers, K. Namjou, Z. Cai, P. J. McCann, and L. Olona, “Cross-plane thermal conductivity of a PbSnSe/PbSe superlattice material”, Applied Physics Letters, Vol. 99, No. 41903 (2011)
  • L. O. Burciaga-Robles, B.P. Holland, D.L. Step, C.R. Kreihbel, G.L. McMillen, C.J. Richards, L. E. Sims, J.D. Jeffers, K. Namjou, and P.J. McCann, "Measurement of breath biomarkers and serum haptoglobin to determine bovine respiratory disease in newly received heifers", American Journal of Veterinary Research, Vol. 70, No. 10, pp. 1291-1298 (2009)
  • P. Kumat, C. Roller, K. Namjou, J.D. Jeffers, A. Faramarzalian, R. Salas, and P.J. McCann, “Measurement of acetaldehyde in exhaled breath using a laser absorption spectrometer”, Applied Optics, Vol. 46, p. 3969-3975 (2007)
  • K. Namjou, C. Roller, T.E. Reich, J.D. Jeffers, G. McMillen, P.J. McCann, and M.A. Camp, “Determination of exhaled nitric oxide distributions in a diverse sample population using tunable diode laser absorption spectroscopy”, Applied Physics B, 85(2/3), 427-435 (2006)
  • J. Jeffers, C. Roller, K. Namjou, M. A. Evans, L. McSpadden, J. Grego, and P. J. McCann, “Real-time diode laser measurements of vapor phase benzene”, Analytical Chemistry, 76(2), 424-432 (2003)
  • C. Roller, K. Namjou, J. Jeffers, M. Camp, A. Mock, P. J. McCann, and J. Grego, “Nitric oxide breath testing using tunable diode laser absorption spectroscopy: application in respiratory inflammation monitoring”, Applied Optics, 41(28), 6018-6029 (2002)
  • C. Roller, K. Namjou, J. Jeffers, W. Potter, P.J. McCann, J. Grego, “Simultaneous NO and CO2 measurements in human breath using a single IV-VI mid-infrared laser”, Optics Letters, 27(2), 107-109 (2002)
  • Conference Procedings

  • Z. Reches, X. Zu, and J. Jeffers, “Precursory, Nucleation and Propagation of Ruptures Along Heterogeneously Loaded, Circular Experimental Faults”, American Geophysical Union, Fall Meeting (2018)
  • J. D. Jeffers, “Cross-plane thermal conductivity temperature dependence for PbSnSe/PbSe thin film superlattice material from 100 K to 300 K”, MRS Proceedings, (2012)
  • P. J. McCann, L. Olona, Z. Cai, J. D. Jeffers, and K. Namjou “MBE grown IV-VI semiconductor structures for thermal conductivity measurements”, MRS Proceedings, (2012)
  • J.D. Jeffers, C.B. Roller, K. Namjou, W. Potter, and P. J. McCann, “Tunable laser spectroscopy measurement of exhaled nitric oxide: effect of flow rate”, Laser Applications in Chemical and Environmental Applications, Annapolis, MD, Feb. 2004
  • L. McSpadden, M.A. Evans, J. Grego, P.J. McCann, J.D. Jeffers, C.B. Roller, and K. Namjou, “Diode laser measurement of vapor phase benzene and determination of activation energy for benzene desorption from activated carbon”, 4th International Conference on Tunable Diode Laser Spectroscopy, Zermatt, Switzerland, 2003
  • C. Roller, K. Namjou, J. D. Jeffers, P. J. McCann, “Exhaled nitric oxide analysis with mid-infrared lasers”, Presented at the Association for the Advancement of Medical Instrumentation Young Investigators Competition, Long Beach, CA, June 2003
  • M. Camp, J. D. Jeffers, C. Roller, K. Namjou, and P. J. McCann, “Exhaled nitric oxide measurements using tunable diode laser absorption spectroscopy: Insensitivity to High Atmospheric Nitric Oxide Concentrations”, ACAAI (American College of Allergy, Asthma, and Immunology) Annual Meeting, San Antonio, TX, Nov. 2002
  • C. Roller, K. Namjou A. Mock, J. Jeffers, and P. J. McCann, "Longitudinal studies of exhaled NO and CO2 in humans using a IV-VI diode laser," in Laser Applications to Chemical and Environmental Analysis, OSA Proceedings Series (Optical Society of America, Washington, DC, 2002)
  • K. Namjou, C. Roller, J. Jeffers, W. Potter, P.J. McCann, and J. Grego, “Exhaled nitric oxide measured using mid-infrared spectroscopy”, ICES (International Conference on Environmental Systems), San Antonio, TX, July 2002
  • A. Mock, C. Roller, J. Jeffers, K. Namjou, P.J. McCann, and J. Grego, “Real-time ground level atmospheric nitric oxide measured by calibrated TDLAS system”, in Laser Applications to Chemical and Environmental Analysis, OSA Proceedings Series (Optical Society of America, Washington, DC, 2002)
  • J. Jeffers, P. J. McCann, K. Namjou, C. Roller, Z. Debebe, and J. Grego, “New Widely-Tunable Mid-IR Lasers and Their Use in Molecular Spectroscopy”, Instrumentation for Air Pollution and Global Atmospheric Monitoring, Proceedings of SPIE 4574, 201 (2002)
  • C. Roller, J. Jeffers, P. J. McCann, and K. Namjou, "Temperature tuning mid-IR IV-VI diode lasers to measure C6H6 and C7H8 broad absorption bands," Presented at Optical Remote Sensing of the Atmosphere, p. 153, OSA Proceedings Series (Optical Society of America, Washington, DC, 2001)
  • J. Jeffers, C. Roller, P. J. McCann and K. Namjou, “Software analysis of IV-VI diode laser emissions for broad band absorption spectroscopy”, Proceedings of the 3rd International Conference on Tunable Diode Laser Spectroscopy, pp 20, Zermatt, Switzerland, 2001
  • J. Jeffers, C. Roller, P. J. McCann, and K. Namjou, "Fourier transform spectrometer for high resolution characterization of mid-IR IV-VI diode lasers," in Fourier Transform Spectroscopy, p. 44, OSA Proceedings Series (Optical Society of America, Washington, DC, 2001)
  • J.D. Jeffers and J. Sluss, “An optical network architecture using reconfigurable wavelength switches”, Optical Society of America Annual Meeting, Providence, RI October 22-26, 2000
  • Personal Publications

  • J.D. Jeffers, "Thermal conductivity measurements of IV-VI semiconductor nanostructures", University of Oklahoma Dissertation (2013)