People

We are a team of 4 engineering and science PhDs with experience and interest in developing non-intrusive optical techniques for gas sensing and imaging with a focus on time-sensitive applications in energy, propulsion, and health.  See our publication record below:


         Peer-Reviewed        Media Coverage        Conference/Technical

Peer-reviewed, archival publications

  1. M. Gamba, V.A. Miller, M.G. Mungal, and R.K. Hanson, “Temperature and number density measurement in non-uniform supersonic flowfields undergoing mixing using toluene PLIF thermometry,” App. Phys. B, pp. 1-20  (2015).

  2. C.S. Goldenstein, I.A. Schultz, R.M. Spearrin, J.B. Jeffries, and R.K. Hanson, “Scanned-wavelength-modulation spectroscopy near 2.5 μm for H2O and temperature in a hydrocarbon-fueled scramjet combustor,” App. Phys. B 116(3), pp. 717-727  (2014).

  3. V.A. Miller, V.A. Troutman, R.K. Hanson, “20 kHz toluene planar laser-induced fluorescence imaging of a jet in nearly sonic crossflow”, App. Phys. B (2014)doi:10.1007/s00340-014-5849-3.

  4. F. Vergine, L. Maddalena, V.A. Miller, M. Gamba, “Supersonic Combustion of Pylon-Injected Hydrogen in High-Enthalpy Flow with Imposed Vortex Dynamics”, Journal of Propulsion and Power, 31(1), pp. 89-103 (2014).

  5. I.A. Schultz, C.S. Goldenstein, C.L. Strand, C.P. Goyne, J.B. Jeffries, & R.K. Hanson, Hypersonic scramjet testing via TDLAS measurements of temperature and column density in a reflected shock tunnel. Journal of Propulsion and Power (2014), in press.

  6. C.S. Goldenstein, R.M. Spearrin, J.B. Jeffries, and R.K. Hanson, “Wavelength-modulation spectroscopy near 2.5 µm for H2O and temperature in high-pressure and – temperature gases," App. Phys. B 116(3), pp. 705-716  (2014).

  7. M.F. Campbell, T. Parise, A.M. Tulgestke, R.M. Spearrin, D. F. Davidson, and R. K. Hanson, “Strategies for obtaining long constant-pressure test times in shock tubes,” J. Shock Waves (2014), in press.

  8. R.M. Spearrin, C.S. Goldenstein, J.B. Jeffries, and R.K. Hanson, “Simultaneous sensing of temperature, CO, and CO2 in a scramjet combustor using quantum cascade laser absorption spectroscopy,” App. Phys. B (2014), doi: 10.1007/s00340-014-5884-0.

  9. R.M. Spearrin, I.A. Schultz, J.B. Jeffries, and R.K. Hanson, “Laser absorption of nitric oxide for thermometry in high-enthalpy air,” Meas. Sci. Technol. (2014), in press.

  10. I.A. Schultz, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, R.D. Rockwell, C.P. Goyne, Spatially-resolved water measurements in a scramjet combustor using diode laser absorption, J. Propuls. Power (2014), doi: 10.2514/1.B35219.

  11. I.A. Schultz, C.S. Goldenstein, C.L. Strand, J.B. Jeffries, R.K. Hanson, C.P. Goyne, Hypersonic scramjet testing via diode laser absorption in a reflected shock tunnel, J. Propuls. Power (2014), in press.

  12. I.A. Schultz, C.S. Goldenstein, M. Spearrin, J.B. Jeffries, R.K. Hanson, Multispecies mid-infrared absorption measurements in a hydrocarbon-fueled scramjet combustor, J. Propuls. Power (2014), doi: 10.2514/1.B35261.

  13. W. Ren, R. M. Spearrin, D. F. Davidson, and R. K. Hanson, “Experimental and modeling study of the thermal decomposition of C3-C5 ethyl esters behind reflected shock waves,” J. Phys. Chem. A 118 (10), pp 1785–1798 (2014).

  14. R. M. Spearrin, W. Ren, J. B. Jeffries, and R. K. Hanson, "Multi-band infrared CO2 absorption sensor for sensitive temperature and species measurements in high-temperature gases," App. Phys. B 116(4), pp. 855-865  (2014).

  15. R. M. Spearrin, R. C. Triolo, “Natural gas based transportation in the United States: Economic evaluation and policy implications based on MARKAL modeling,” Int. J. Energy Res. (2014), doi: 10.1002/er.3199.

  16. R. M. Spearrin, S. Li, D. F. Davidson, J. B. Jeffries, and R. K. Hanson, “High-temperature iso-butene absorption diagnostic for shock tube kinetics using a pulsed quantum cascade laser near 11.3 μm,” Proc. of the Combustion Inst. (2014), doi: 10.1016/j.proci.2014.04.002.

  17. C.H. Smith, C.S. Goldenstein, and R.K. Hanson, “A scanned-wavelength-modulation absorption spectroscopy sensor for temperature and H2O in low-pressure flames,” Meas. Sci. Technol. 25 (2014) 115501.

  18. C. S. Goldenstein, R. M. Spearrin, J. B. Jeffries, and R. K. Hanson, “Infrared laser absorption sensors for multiple performance parameters in a detonation combustion,” Proc. of the Combustion Inst. (2014), doi: 10.1016/j.proci.2014.05.027.

  19. M. F. Campbell, S. Wang, C. S. Goldenstein, R. M. Spearrin, L. T. Zaczek, A. M. Tulgestke, D. F. Davidson, and R. K. Hanson, “Constrained reaction volume shock tube study of normal heptane oxidation: Ignition delay times, species time histories, and temperature profiles,” Proc. of the Combustion Inst. (2014), doi: 10.1016/j.proci.2014.05.001.

  20. V. A. Miller, V. A. Troutman, R. K. Hanson, “Near-kHz 3D LIF imaging of a co-flow jet using toluene”, Meas. Sci. Technol. (2014), doi:10.1088/0957-0233/25/7/075403.

  21. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Effects of secondary diaphragm thickness and pressure transducer type on pressure measurement quality in an expansion tube”, AIAA J., 52(2) (2014),  doi:10.2514/1.J052767.

  22. C.S. Goldenstein, C. A. Almodovar, J.B. Jeffries, R.K. Hanson, and C.M. Brophy, High-bandwidth scanned-wavelength-modulation spectroscopy sensors for temperature and H2O in a rotating detonation engine, Meas. Sci. Technol. 25 (2014) 105104.

  23. C.S. Goldenstein and R.K. Hanson, Diode-laser measurements of linestrength and temperature-dependent lineshape parameters for H2O transitions near 1.4 µm using Voigt, Rautian, Galatry, and speed-dependent profiles, J. Quant. Spectrosc. Radiat. Transf. (2014) doi: 10.1016/j.jqsrt.2014.11.008.

  24. I.A. Schultz, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, R.D. Rockwell, C.P. Goyne, Diode laser absorption sensor for combustion progress in a model scramjet, J. Propuls. Power. 30, pp. 550-557 (2014).

  25. C.S. Goldenstein, R.M. Spearrin, I.A. Schultz, J.B. Jeffries, R.K. Hanson, Wavelength-modulation spectroscopy near 1.4 µm for measurements of H2O and temperature in high-pressure and – temperature gases, Meas. Sci. Technol. 25 (2014) 055101.

  26. R.M. Spearrin, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Quantum cascade laser absorption sensor for carbon monoxide in high-pressure gases using wavelength modulation spectroscopy, Appl. Opt. 53, 1938-1946 (2014).

  27. C.S. Goldenstein, C.L. Strand, I.A. Schultz, K. Sun, J.B. Jeffries, R.K. Hanson, Fitting of calibration-free scanned-wavelength-modulation spectroscopy spectra for determination of gas properties and absorption lineshapes, Appl. Opt. 53, pp. 356-367 (2014).

  28. C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Diode laser measurements of linestrength and temperature-dependent lineshape parameters of H2O-, CO2-, and N2-perturbed H2O transitions near 2474 and 2482 nm, J. Quant. Spectrosc. Radiat. Transf. 130, pp. 100-111 (2013).

  29. R.M. Spearrin, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Mid-infrared laser absorption diagnostics for detonation studies, in: 29th Int. Symp. Shock Waves, Madison, (2013). 

  30. C.S. Goldenstein, I.A. Schultz, J.B. Jeffries, R.K. Hanson, A two-color absorption spectroscopy strategy for measuring the column density and path-average temperature of the absorbing species in nonuniform gases, Appl. Opt. 52, pp. 7950-7962 (2013).

  31. V. A. Miller, M. Gamba, R. K. Hanson, “Characterization of structure and turbulence in a counter impinging jet reactor using PIV”, J. Fluid Eng., 135(9) (2013), doi:10.1115/1.4024893.

  32. C.S. Goldenstein, I.A. Schultz, R.M. Spearrin, J.B. Jeffries, R.K. Hanson, Diode laser measurements of temperature and H2O for monitoring pulse detonation combustor performance, in: 24th Int. Colloq. Dyn. Explos. React. Syst., Taiwan, (2013).

  33. K. Sun, X. Chao, R. Sur, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Analysis of calibration-free wavelength-scanned modulation spectroscopy for practical gas sensing using tunable diode lasers, Meas. Sci. Technol. 24 (2013) 125203.

  34. R.M. Spearrin, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Fiber-coupled 2.7 µm laser absorption sensor for CO2 in harsh combustion environments, Meas. Sci. Technol. 24 (2013) 055107.

  35. V. A. Miller, “Quantifying and correcting for contamination of PLIF images due to background signal”, Experiments in Fluids (2013). doi:10.1007/s00348-013-1566-7.

  36. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Single- and dual-band collection toluene PLIF thermometry in supersonic flows”, Experiments in Fluids (2013), doi:10.1007/s00348-013-1539-x (Invited paper in Topical Collection on Application of Laser Techniques to Fluid Mechanics 2012.)

  37. R.D. Rockwell, C.P. Goyne, W. Haw, J.C. McDaniel, C.S. Goldenstein, I.A. Schultz, J.B. Jeffries, R.K. Hanson, Measurement of water vapor levels for investigating vitiation effects on scramjet performance, J. Propuls. Power. 27, pp.1315-1317 (2011).

  38. Örley, F., Strand, C. L., Gamba, M., Miller, V. A., and Iaccarino, G., “A study of expansion tube gas flow conditions for scramjet combustor model testing”. Center for Turbulence Research 2011 Annual Research Briefs.

  39. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Toluene PLIF thermometry and imaging in supersonic flows”, Center for Turbulence Research 2011 Annual Briefs.

  40. L. S. Chang, C. L. Strand, J. B. Jeffries, R. K. Hanson, G. S. Diskin, R. L. Gaffney, and D. P. Capriotti, “Supersonic Mass-Flux Measurements via Tunable Diode Laser Absorption and Nonuniform Flow Modeling”, AIAA J., 49(12), pp. 2783–2791 (2011).

  41. D. M. Harris, V. A. Miller, C. H. K. Williamson, “A short-wave instability caused by the approach of a vortex pair to a ground plane”, Physics of Fluids, 22(9) (2010).

  42. V. A. Miller, D. M. Harris, and C. H. K. Williamson, “Technical Briefing: Interaction of a counter-rotating vortex pair with the ground”, Engineering and Computational Mechanics, 162(4) (2009). 


Media Coverage

  1. “Scientists made an amazing video that shows the short but beautiful life of a match on fire”, Business Insider, January 2015

  2. J. Gordon, “In Video of Burning Match, the Eye Meets More”, The New York Times, December 2014

  3. NYTimes|ScienceTake, “New View of Flame”, The New York Times, December 2014

  4. Matthew Metz, “Imaging CO2: An interview with laser imager Vic Miller”, CitizenMetz Blog, December 2014

  5. N. Stockton, “Prize-winning Videos Capture the Strange Beauty of Fluids in Motion”, Wired.com, November 2014

  6. N. Sharpe, “When considering fluid motion there are many ways”, fyfd tumblr, November 2013

  7. K. Arneman, “Fluid Fantastica – Vortex Pairs: D. Harris, V. Miller, C. Williamson”, Cosmos, Issue 41, October 2011.

  8. D. M. Harris, V. A. Miller, C. H. K Williamson, Cover Art, Physics of Fluids, September 2010, Volume 22, Issue 9

  9. "The eye-catching best of fluid dynamics”, NewScientists.com, January 2010

  10. “Picture of the day – A Short-Wave Instability Caused by the Approach of a Vortex Pair to a Ground Plane – Harris, Miller, and Williamson”, News.Science360.com, January 2010

  11. Best Fluid Motion Pictures Named – Wingtip Vortices: Harris, Miller, & Williamson”, News.NationalGeographic.com, January 2010

  12. J. Marshall, “Fascinating Fluids – Wingtip Vortices: Harris, Miller, C. Williamson”, Discovery.com, January 2010. 

  13. D. M. Harris, V. A. Miller, C. H. K. Williamson, “Backscatter – A counter-rotating vortex pair in ground effect”, Physics Today, January 2010

  14. V. A. Miller, D. M. Harris, and C. H. K. Williamson, Cover Art, Proceedings of ICE – Engineering and Computational Mechanics, December 2009, 162, No. 4


Conference Papers and Technical Reports

  1. E. T. Jens, V. A. Miller, F. S. Mechentel, B. J. Cantwell, G. S. Hubbard, “Visualisation of Combustion in a Turbulent Boundary Layer Over a Melting Fuel”, 19th Australasian Fluid Mechanics Conference, December 2014.

  2. V. A Miller, V. A. Troutman, R. K. Hanson, “Toluene PLIF of jets at 20 kHz”, 17th International Symposium on applications of laser techniques to fluid mechanics, Lisbon, Portugal, July (2014).

  3. V. A. Miller, S. Erlien, J. Piersol, “Support vector machine classification of dimensionally reduced structural MRI images for dementia”, arXiv:1406.6568.

  4. V. A. Miller, E. T. Jens, F. S. Mechentel, B. J. Cantwell, “Simultaneous high-speed schlieren and OH chemiluminescence imaging in a hybrid rocket combustor at elevated pressures,” APS DFD, San Francisco, CA, 2014.

  5. R. M. Spearrin, J. B. Jeffries, R. K. Hanson, “Mid-infrared absorption sensor for measurements of CO and CO2 in propulsion flows”, in: 52nd Aerospace Sciences Meeting, 2014.

  6. I.A. Schultz, C.S. Goldenstein, C.L. Strand, J.B. Jeffries, R.K. Hanson, C.P. Goyne, Hypersonic scramjet testing via TDLAS measurements of temperature and column density in a reflected shock tunnel, in: 52nd Aerospace Sciences Meeting, AIAA 2014-0389 (2014).

  7. I.A. Schultz, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, R.D. Rockwell, C.P. Goyne, Spatially-resolved TDLAS measurements of temperature, H2O column density, and velocity in a direct-connect scramjet combustor, in: 52nd Aerospace Sciences Meeting, AIAA 2014-1241 (2014).

  8. M. Gamba, V. A. Miller, M. Gamba, “The reacting transverse jet in supersonic crossflow: physics and properties”, 2014 AIAA Hypersonics Conference, Atlanta, Georgia, June 2014.  (Invited paper).

  9. V. A. Miller, M. G. Mungal, “The Hama Problem revisited: essential mixing in a free shear flow”, APS DFD, Pittsburgh, PA, 2013.  arXiv:1310.1644.Miller, and Williamson”, News.Science360.com, January 2010

  10. R.K. Hanson, J. B. Jeffries, V. A. Miller, “High-repetition-rate, High-average Power UV Laser for High-Speed PLIF Imaging.”  Final report for Air Force Office of Scientific Research Equipment Grant, October 2013.

  11. W. Ren, R. M. Spearrin, D. F. Davidson, R. K. Hanson, “Thermal decomposition of C3-C5 ethyl esters: CO, H2O and CO2 time-histories behind reflected shock waves," in The 8th National Combustion Meeting, Park City, UT, 2013.

  12. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Combustion Experiments”, chapter in the Stanford DoE PSAAP Center Final Report, September 2013.

  13. M. Gamba, J. Larsson, L. Campo, S. Im, V. A. Miller, “Highlights of Collaborative Computational and Experimental Science”, chapter in the Stanford DoE PSAAP Center Final Report, September 2013.

  14. V. A. Miller, J. B. Jeffries, R. K. Hanson, “Highlights of high-speed quantitative imaging for combustion applications”, chapter in the annual AFOSR Hanson review, January 2013.

  15. V. A. Miller, R. K. Hanson, “Development of tracer-based, multi-parameter, 4D PLIF imaging for studies of turbulent and reacting flow fields.”  White paper directed to AFOSR, June 2013.

  16. M. Gamba, V. A. Miller, and M. G. Mungal, “Density ratio and velocity ratio effects on the structure of transverse jets in supersonic crossflow”, International Symposium on Turbulence and Shear Flow Phenomena (TSFP-8), Poitiers, France, August 28-30, 2013. 

  17. M. Gamba, V. A. Miller, and M. G. Mungal, “Density and Velocity Ratios Effects on the Structure of Transverse Jets in Supersonic Crossflow”, APS DFD, San Diego, CA, 2012. 

  18. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Toluene PLIF temperature and pressure imaging in supersonic flows,” APS DFD, San Diego, CA, 2012.

  19. C.S. Goldenstein, I.A. Schultz, J.B. Jeffries, R.K. Hanson, TDL absorption sensor for temperature measurements in high-pressure and high-temperature gases, in: 50th AIAA Aerosp. Sci. Meet., AIAA 2012-1061 (2012).

  20. I.A. Schultz, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, TDL absorption sensor for in situ determination of combustion progress in scramjet ground testing, in: 28th Aerodyn. Meas. Technol. Gr. Testing, Flight Test. Conf., AIAA 2012-2654 (2012).

  21. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Two-camera Dual-band collection toluene PLIF thermometry in supersonic flows”, 16th International symposium on application of laser techniques to fluid dynamics, Lisbon, Portugal (July 2012).

  22. F. Vergine, L. Maddalena, V. A. Miller, M. Gamba, “Supersonic Combustion and Flame-Holding Characteristics of Pylon Injected Hydrogen in a Mach 2.4 High Enthalpy Flow”, 50th AIAA New Horizons Conference, Nashville, Tennessee, January 9-12, 2012, AIAA-2012-333.

  23. M. Gamba, V. A. Miller, M. G. Munal, and R. K. Hanson, “Combustion Characteristics of an Inlet/Scramjet Combustor Model”, 50th AIAA New Horizons Conference, Nashville, Tennessee, January 9-12, 2012, AIAA-2012-0612.

  24. V. A. Miller, M. Gamba, R. K. Hanson, “Flow visualization for CFD validation”, Technical Report, Lawrence Livermore National Lab subcontract no. B592701, September, 2011. 

  25. M. Gamba, V. A. Miller, M. G. Mungal, and R. K. Hanson, “Ignition and Flame Structure in a Compact Inlet/Scramjet Combustor Model”, 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, San Francisco, California, 11-14 April 2011, AIAA 2011-2366.

  26. V. A. Miller, M. Gamba, M. G. Mungal, and R. K. Hanson, “Development of a model scramjet combustor”, 49th AIAA New Horizons Conference, Orlando, Florida, January 4-7, 2011, AIAA 2011-32.

  27. C.S. Goldenstein, I.A. Schultz, J.B. Jeffries, R.K. Hanson, Tunable diode laser absorption sensor for measurements of temperature and water concentration in supersonic flows, in: 49th AIAA Aerosp. Sci. Meet., AIAA 2011-1094 (2011).

  28. V. A. Miller, M. Gamba, M. G. Mungal, R. K. Hanson, “Toluene laser induced fluourescence imaging of compressible flows in an expansion tube”, APS DFD, Baltimore, MD, 2011.

  29. F. Örley, C. L. Strand, V. A. Miller, M. Gamba, and G. Iaccarino, “A study of expansion tube gas flow conditions for scramjet combustor model testing”. 42nd AIAA Fluid Dynamics Conference and Exhibit, New Orleans, LA, 2012.

  30. I.A. Schultz, C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Tunable diode laser diagnostic for scramjet combustion flows, in: 7th US National Meeting of the Combustion Institute, Atlanta, CA (2011).

  31. C. L. Strand, and R. K. Hanson, “Thermometry and velocimetry in supersonic flows via scanned wavelength-modulation absorption spectroscopy”, 47th AIAA/ASME/SAE/ASEE Joint Propulsion Meeting and Exhibit, San Diego, CA (2011).

  32. P. Lappas, A. McCartt, C. Strand, S. Gates, M. Joubert, L. Hokama, K. Mortelmans, D. Davidson, J. Jeffries, and R. Hanson, “Dispersion, activation, and destruction of airborne biological threats: laboratory studies of the interaction of spore-laden aerosols with shock/blast waves”, Chemical and Biological Defense Physical Science and Technology Conference, New Orleans, LA (2008).

  33. C. L. Strand, G. Watson, R. Tucker, J. Nault, and L. Sigurdson, “An augmented reality 3-D digitization system for stereoscopic flow visualization images”, 13th International Symposium on Flow Visualization, Nice, France  (2008).