Peer-reviewed Journal Articles

M. Arienti, M. Geier, X. Yang, J. Orcutt, J. Zenker, S. D. Brooks, An experimental and numerical study of the light scattering properties of ice crystals with black carbon inclusions, Journal of Quantitative Spectroscopy and Radiative Transfer, 211 (2018) 50-63.
N. Vorobiev, M. Geier, M. Schiemann, V. Scherer, Experimentation for char combustion kinetics measurements: Bias from char preparation, Fuel Processing Technology, 151 (2016) 155-165.
T. Li, M. Geier, L. Wang, X. Ku, B. Matas-Güell, T. Løvås, C.R. Shaddix, Effect of Torrefaction on Physical Properties and Conversion Behavior of High Heating Rate Char of Forest Residue, Energy & Fuels, 29 (2015) 177-184.
M. Geier, M. Arienti, Detection of preferential particle orientation in the atmosphere: Development of an alternative polarization lidar system, Journal of Quantitative Spectroscopy and Radiative Transfer, 149 (2014) 16-32.
M. Schiemann, M. Geier, C.R. Shaddix, N. Vorobiev, V. Scherer, Determination of char combustion kinetics parameters: Comparison of point detector and imaging-based particle-sizing pyrometry, Review of Scientific Instruments, 85 (2014) 075114.
D. Kim, S. Choi, C.R. Shaddix, M. Geier, Effect of CO2 gasification reaction on char particle combustion in oxy-fuel conditions, Fuel, 120 (2014) 130-140.
C.R. Shaddix, F. Holzleithner, M. Geier, B.S. Haynes, Numerical assessment of Tognotti determination of CO2/CO production ratio during char oxidation, Combustion and Flame 160 (2013) 1827-1834.
M. Geier, T. Parker, Electrospray Flame Synthesis of Yttria-Stabilized Zirconia Nanoparticles, Industrial & Engineering Chemistry Research, 52 (2013) 16842-16850.
M. Geier, C.R. Shaddix, F. Holzleithner, A mechanistic char oxidation model consistent with observed CO2/CO production ratios, Proceedings of the Combustion Institute 34 (2013) 2411-2418.
M. Geier, C.R. Shaddix, K.A. Davis, H.-S. Shim, On the use of single-film models to describe the oxy-fuel combustion of pulverized coal char, Applied Energy 93 (2012) 675-679.
E.S. Hecht, C.R. Shaddix, M. Geier, A. Molina, B.S. Haynes, Effect of CO2 and steam gasification reactions on the oxy-combustion of pulverized coal char, Combustion and Flame 159 (2012) 3437-3447.
Y.Liu, M. Geier, A. Molina, C.R. Shaddix, Pulverized coal stream ignition delay under conventional and oxy-fuel combustion conditions, International Journal of Greenhouse Gas Control 55 (2011) S36-S46.
M. Geier, C.B. Dreyer, T.E. Parker, Laser-induced emission spectrum from high-temperature silica-generating flames, Journal of Quantitative Spectroscopy & Radiative Transfer 109 (2008) 822-830.
M. Geier, R.P. Earhart, T.E. Parker, Elastic light scattering measurements on non-uniform particle flow fields: theoretical considerations, Measurement Science and Technology 18 (2007) 2021-2032.

Technical Reports

M. Arienti, X. Yang, A. Kopacz, M. Geier, A Study of the Optical Properties of Ice Crystals with Black Carbon Inclusions, Report No. SAND2015-8111, Sandia National Laboratories (2015).
A. George, M. Geier, D. Dedrick, Hybrid-renewable processes for biofuels production: concentrated solar pyrolysis of biomass residues, Report No. SAND2014-19004R, Sandia National Laboratories (2014).
C.J. Orendorff, G. Nagasubramanian, T.N. Lambert, K.R. Fenton, C.A. Apblett, C.R. Shaddix, M. Geier, E.P. Roth, Advanced Inactive Materials for Improved Lithium-Ion Battery Safety, Report No. SAND2012-9186, Sandia National Laboratories (2012).

Conference Proceedings and Presentations

E.S. Hecht, M. Geier, S. Iqbal, C.R. Shaddix, Experimental Determination of Kinetics of Oxy-fuel Char Combustion, 35th International Symposium on Combustion, San Francisco, CA, Aug. 3 – 8, 2014.
T. Li, M. Geier, L. Wang, X. Ku, B. Matas-Güell, T. Løvås, C.R. Shaddix, Effect of torrefaction on physical properties and conversion behavior of high heating rate char of forest residue, 35th International Symposium on Combustion, San Francisco, CA, Aug. 3 – 8, 2014.
X. Yang, M. Geier, M. Arienti, Optical Properties of Small Ice Crystals with Black Carbon Inclusions, AGU 2013 Fall Meeting, San Francisco, CA, Dec. 9 – 13, 2013.
C.R. Shaddix, M. Geier, Char Consumption Kinetics During Oxy-Combustion of Pulverized Coal: An Extended Single-Film Model for Utilization in CFD Codes, 34th International Symposium on Combustion, Warsaw, Poland, July 29 – Aug. 3, 2012.
C.R. Shaddix, M. Geier, F. Holzleithner, Development of an Improved Semi-Global Intrinsic Char Oxidation Kinetics Model, Spring Technical Meeting of the Western States Section of the Combustion Institute, Tempe, AZ, Mar. 19 – 20, 2012.
M. Geier, D. Kim, C. R. Shaddix, Direct Measurement of High-Temperature CO2 Gasification Rate of Pulverized Coal Chars at 1 atm, Fall Technical Meeting of the Western States Section of the Combustion Institute, Riverside, CA, Oct. 17 – 18, 2011.
C.R. Shaddix, Y. Liu, M. Geier, A. Molina, Pulverized coal ignition delay under conventional and oxy-fuel combustion conditions, IEA-GHG 2nd Oxyfuel Combustion Conference, Queensland, Australia, Sept. 12 – 16, 2011.
M. Geier, C.R. Shaddix, Kinetics Rate Parameters for an Extended Single-Film Char Consumption Model Proposed for CFD Simulations of Oxy-Combustion of Pulverized Coal, 28th Annual International Pittsburgh Coal Conference, Pittsburgh, PA, Sept. 12 – 15, 2011.
K. Davis, H. Shig-Shim, M. Geier, C. Shaddix, On the Use of Single-Film Models to Describe the Oxy-Fuel Combustion of Pulverized Coal Char, Proceedings of the 36th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, FL, June 5 – 9, 2011.
C.R. Shaddix, E. Hecht, M. Geier, Evaluation of the Combustion Rates of Lignin Residues from Cellulosic Ethanol Production, 7th US National Combustion Meeting, Atlanta, GA, Mar. 20 – 23, 2011.
M. Geier, C.R. Shaddix, A Modified Single-Film Char Consumption Model for CFD Simulations of Oxy-Combustion of Pulverized Coal, 7th US National Combustion Meeting, Atlanta, GA, Mar. 20 – 23, 2011.
M. Geier, C.R. Shaddix, and B.S. Haynes, Oxy-Combustion of Pulverized Coal: Modeling of Char-Combustion Kinetics, 27th Annual International Pittsburgh Coal Conference, Istanbul, Turkey, Oct. 11 – 14, 2010.
M. Geier, C.R. Shaddix, B.S. Haynes, Oxy-combustion of Pulverized Coal: Effects of Particle Size on Char Consumption Kinetics, 33rd International Symposium on Combustion, Tsinghua University, Beijing, China, Sept. 16 – 30, 2010.
Y. Liu, M. Geier, C.R. Shaddix, Experimental Investigation of the Effect of Coal Particle Loading on Ignition Delay, 33rd International Symposium on Combustion, Beijing, China, Sept. 16 – 30, 2010.
C.R. Shaddix, E.S. Hecht, M. Geier, A. Molina, B. S. Haynes, Effect of gasification reactions on oxy-fuel combustion of pulverized coal char, Proceedings of the 35th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, FL, June 6 – 10, 2010.
M. Geier, C.R. Shaddix, Effects of Particle Size on Oxy-Fuel Combustion of Pulverized Coal, Western States Section of the Combustion Institute, Spring 2010 Meeting, Boulder, CO, Mar. 21 – 23, 2010.
M. Geier, E.S. Hecht, and C.R. Shaddix, Evaluation of Effect of Particle Size on Oxy-Fuel Combustion of Pulverized Coal, 26th Annual International Pittsburgh Coal Conference, Pittsburgh, PA, Sept. 20 – 23, 2009.
T. Parker, C. Dreyer, M. Geier, and J. Labs, Single-shot Raman measurements in diesel spray systems as a tool to differentiate two-stage ignition from single stage ignition, The 233rd ACS National Meeting, Chicago, IL, Mar. 25 – 29, 2007.
M. Geier, and T.E. Parker, Flame Synthesis of Silica Nanoparticles in Premixed Flames: Controlling the Onset of Particle Growth, Poster Presentation, Thirty-first International Symposium on Combustion, Heidelberg, Germany, Aug. 06 – 11, 2006.
M. Geier, and T.E. Parker, Growth of Silica Nanoparticles in a Premixed Flame, Fourth Joint Meeting of the US sections of the Combustion Institute, Philadelphia, PA, Mar. 20 – 23, 2005.
M. Geier, and T.E. Parker, Flame Synthesis of Silica Nanoparticles in Premixed and Multi-element Diffusion Flames, Poster Presentation, 30th International Symposium on Combustion, Chicago, IL, Jul. 25 – 30, 2004.
M. Geier, and T.E. Parker, Flame Synthesis of Silica Nanopowder: The Role of Data Reduction for Elastic Light Scattering Measurements (ELS), Spring Meeting 2004, Western States Section of the Combustion Institute, Davis, CA, Mar. 29 – 30, 2004.
T. Parker, M. Geier, and J. Labs, Quantitative scattering measurements of condensed phase material, Laser Applications to Chemical and Environmental Analysi, Annapolis, MD, Feb. 9 – 11, 2004.
M. Geier, R.P. Earhart, T.E. Parker, Synthesis of Silica Nanoparticles using a Multi-Element Diffusion Burner: Effects of Precursor Concentration on Particle Size and Morphology, Third Joint Meeting of the US sections of the Combustion Institute, Chicago, IL, Mar. 16 – 19, 2003.
R.P. Earhart, M. Geier, T.E. Parker, Synthesis of Silica Nanoparticles in a Co-flow Diffusion Flame: Influence of Concentration, Temperature and Flame Stoichiometry on Particle Properties, Nanoparticles and Nanostructures through Vapor Phase Synthesis, Vapor Phase Synthesis of Materials IV, Castelvecchio Pascoli, Italy, Jun. 16 – 21, 2002.