1. Daly, S., Tran, K., Niemeyer, K.E., Cannella, W.J., Hagen, C.L. Predicting Fuel Low-Temperature Combustion Performance Using Fourier-Transform Infrared Absorption Spectra of Neat Hydrocarbons, FUEL, Volume 242, 2019, 343-344, https://doi.org/10.1016/j.fuel.2019.01.054.
     
  2. Taie, Z., Hagen, C. L., Experimental thermodynamic first and second law analysis of a variable output 1–4.5 kWe, ICE-driven, natural-gas fueled micro-CHP generator. Energy Conversion and Management, 2019, 180, 292–301. https://doi.org/10.1016/j.enconman.2018.10.075
     
  3. Daly, S., Hagen, C.L., Cenker, E., Pickett, L., Skeen, S., The Effects of Injector Temperature on Spray Characteristics in Heavy-Duty Diesel Sprays, SAE International Journal of Engines 11(6):879– 891, 2018, doi:10.4271/2018-01-0284.
     
  4. Lavrich, Z., Wagner, D.R., Taie, T., Hagen, C. L., Design considerations for small scale rotating fluidized beds in static geometry with screens for fine particles, Chemical Engineering Research and Design, Volume 137, 2018, Pages 89-100, ISSN 0263-8762, https://doi.org/10.1016/j.cherd.2018.06.044.
     
  5. Daly, S.R., Niemeyer, K.E., Cannella, W.J., Hagen, C.L., FACE gasoline surrogates formulated by an enhanced multivariate optimization framework, Energy and Fuels, 2018 32 (7), 7916-7932, https://doi.org/10.1021/acs.energyfuels.8b01313
     
  6. Taie, Z., West, B., Szybist, J., Edwards, D., Thomas, J., Huff, S., Vishwanathan, G., Hagen, C.L., Detailed Thermodynamic Investigation of an ICE-Driven, Natural Gas-Fueled, 1kwe Micro-CHP Generator, Energy Conversion and Management. Volume 166, 2018, Pages 663-673, ISSN 0196- 8904, https://doi.org/10.1016/j.enconman.2018.04.077.
     
  7. Ganti, H., Menon, S.K., Niemeyer, K.,E., Hagen, C.L., Effects of Oil and Water Contamination on the Operation of a Natural Gas Internal Combustion Engine, Journal of Natural Gas Science and Engineering, Volume 41, May 2017, Pages 30-39, ISSN 1875-5100, http://doi.org/10.1016/j.jngse.2017.02.038.
     
  8. Deng, Y., Menon, S.K., Lavrich, Z., Wang, H., Hagen, C.L., Design, Simulation, and Testing of a Novel Micro-Channel Heat Exchanger for Natural Gas Cooling in Automotive Applications, Applied Thermal Engineering, Volume 110, January 2017, Pages 327–334, doi: 10.1016/j.applthermaleng.2016.08.193.
     
  9. Daly, S., Niemeyer, K.E., Cannella, W.J., Hagen, C.L., Predicting Fuel Research Octane Number using Fourier-Transform Infrared Absorption Spectroscopy of Neat Hydrocarbons, accepted for publication by Fuel. Volume 183, 1 November 2016, Pages 359–365, doi:10.1016/j.fuel.2016.06.097
  1. Daly, S.R., Olson, N. Hagen, C.L., Fourier-Transform Infrared Absorption Spectroscopy in Binary Hydrocarbon-Alcohol Single Droplet Evaporation, Journal of Spectroscopy, vol. 2016, Article ID 3619634, 7 pages, 2016. doi:10.1155/2016/3619634.
     
  2. Elgin, R.C., Hagen, C.L., A Semi-Empirical CNG Tank Filling Model Created for a Novel Self- Refueling Vehicle System, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, published online, January 2016, doi: 10.1177/0954407015623409.
     
  3. Malakoutirad, M., Bradley, T.H., Hagen, C.L., Design Considerations for an Engine-Integral Reciprocating Natural Gas Compressor, Applied Energy, Volume 156, 2015, pp. 129-137, ISSN 0306-2619.
     
  4. Elgin, R.C., Hagen, C.L., Development and Operation of a Self-Refueling Compressed Natural Gas Vehicle, Applied Energy, Volume 155, 2015, pp. 242-252, ISSN 0306-2619.
     
  5. Niemeyer, K.E., Daly, S.R., Cannella, W.J., Hagen, C.L., Investigation of the LTC Fuel Performance Index for Oxygenated Reference Fuel Blends, Fuel, Volume 155, 2015, pp. 14-24.
     
  6. Niemeyer, K.E., Daly, S R., Cannella, W.J., Hagen, C.L. A Novel Fuel Performance Index for LTC Engines Based on Operating Envelopes in Light-Duty Driving Cycle Simulations, ASME Journal of Engineering for Gas Turbines and Power, 2015, Volume 137, Issue 10 p.101601.
     
  7. Hagen, C.L., Lee, B.C., Franka, I.S., Rath, J.L., VandenBoer, T.C., Roberts, J.M., Brown, S.S., and Yalin, A.P., Cavity Ring-Down Spectroscopy Sensor for Detection of Hydrogen Chloride, Atmospheric Measurement Techniques, Volume 7, 2014, pp. 345–357.
     
  8. Kranendonk, L.A., Caswell, A.W., Hagen, C.L., Neuroth, C.T., Shouse, D.T., Gord, J.R., Sanders, S.T., Temperature Measurements in a Gas-Turbine-Combustor Sector Rig Using Swept-Wavelength Absorption Spectroscopy, Journal of Propulsion and Power 2009, Volume 25, Issue 4, pp. 859-863.
     
  9. Hagen, C.L., Sanders, S.T., Investigation of Multi-Species (H2O2 and H2O) Sensing and Thermometry in an HCCI Engine by Wavelength-Agile Absorption Spectroscopy, Measurement Science & Technology 2007, Volume 18, Issue 7, 1992-1998.
     
  10. Hagen, C.L., Sanders, S.T., Toward Hyperspectral Sensing in Practical Devices: Measurements of Fuel, H2O and Gas Temperature in a Metal Homogeneous Charge Compression Ignition Engine, Journal of Near Infrared Spectroscopy, Volume 15, Issue 4, 2007, pp. 217-225.
     
  11. Hagen, C.L., Schmidt, J.R., Sanders, S.T., Spectroscopic Sensing via Dual-Clad Optical Fiber, IEEE Sensors Journal, Volume 6, Issue 5, 2006, pp. 1227-1231.
     
  12. Hagen, C.L., Walewski, J.W., Sanders, S.T., Generation of a Continuum Extending to the Midinfrared by Pumping ZBLAN Fiber with an Ultrafast 1550-nm Source, IEEE Photonics Technology Letters, Volume28, Issues 1-4, 2006, pp. 91-93.
     
  13. Walewski, J.W., Filipa, J.A., Hagen, C.L., Sanders, S.T., Standard Single-Mode Fibers as Convenient Means for the Generation of Ultrafast High-Pulse-Energy Super-Continua, Applied Physics B- Lasers and Optics Volume 83, Issue 1, 2006, pp. 75-79.