Kim, D. and Ocampo, I.K. and Smith, R.F. and Coppari, F. and Millot, M. and Wicks, J.K. and Rygg, J.R. and Eggert, J.H. and Duffy, T.S. "Ramp Compression of Germanium Dioxide to Extreme Conditions: Phase Transitions in an SiO2 AnalogPhysical Review X, 13:3 (2023)

Payne, S.S. and Duffy, T.S. "The role of calcite mineral elastic moduli in carbonate rock physicsLeading Edge 42:4 (2023)

Rucks, M.J. and Finkelstein, G.J. and Zhang, D. and Dera, P.K. and Duffy, T.S. "Single-crystal X-ray diffraction of fluorapatite to 61 GPaAmerican Mineralogist, 108:4 (2023)

Hari, A. and Hari, R. and Heighway, P.G. and Smith, R.F. and Duffy, T.S. and Sims, M. and Singh, S. and Fratanduono, D.E. and Bolme, C.A. and Gleason, A.E. and Coppari, F. and Lee, H.J. and Granados, E. and Heimann, P. and Eggert, J.H. and Wicks, J.K. "High pressure phase transition and strength estimate in polycrystalline alumina during laser-driven shock compressionJournal of Physics Condensed Matter, 35:9 (2023)

Rucks, M.J. and Winey, J.M. and Toyoda, Y. and Gupta, Y.M. and Duffy, T.S. "Shock Compression of Fluorapatite to 120 GPaJournal of Geophysical Research: Planets, 128:2 (2023)



Kim, D. and Smith, R.F. and Ocampo, I.K. and Coppari, F. and Marshall, M.C. and Ginnane, M.K. and Wicks, J.K. and Tracy, S.J. and Millot, M. and Lazicki, A. and Rygg, J.R. and Eggert, J.H. and Duffy, T.S. "Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planetsNature Communications, 13:1 (2022)

Ocampo, I.K. and Winey, J.M. and Toyoda, Y. and Duffy, T.S. "Dynamic compression of [100] MgF2 single crystals: Shock-induced polymorphism to highly coordinated structuresPhysical Review B, 106:14 (2022)

Krygier, A. and Wehrenberg, C.E. and Bernier, J.V. and Clarke, S. and Coleman, A.L. and Coppari, F. and Duffy, T.S. and Gorman, M.G. and Hohenberger, M. and Kalantar, D. and Kemp, G.E. and Khan, S.F. and Krauland, C. and Kraus, R.G. and Lazicki, A. and Macdonald, M.J. and Macphee, A.G. and Marley, E. and Marshall, M.C. and May, M. and McNaney, J.M. and Millot, M. and Ping, Y. and Poole, P.L. and Rygg, J.R. and Schneider, M. and Sio, H. and Stoupin, S. and Swift, D. and Yeamans, C. and Zobrist, T. and Smith, R.F. and Eggert, J.H. "X-ray source characterization and sample heating on x-ray diffraction experiments at the National Ignition FacilityPhysics of Plasmas, 29:10 (2022)

Rastogi, V. and Smith, R.F. and Swift, D.C. and Briggs, R. and Gorman, M.G. and Krill, C. and Coleman, A.L. and Fratanduono, D.E. and Eggert, J.H. and Bolme, C.A. and Coppari, F. and Gleason, A. and Lee, H.J. and Heimann, P. and Duffy, T.S. and Wicks, J.K. "Femtosecond diffraction studies of the sodium chloride phase diagram under laser shock compressionJournal of Applied Physics, 132:8 (2022)

Kim, D., Smith, R.F., Ocampo, I.K., Coppari, F., Marshall, M.C., Ginnane, M.K., Wicks, J.K., Tracy, S.J., Millot, M., Lazicki, A., Rygg, J.R., Eggert, J.H. and Duffy, T.S. “Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planetsNature Communications, 13:1 (2022)

Smith, R.F., Rastogi, V., Lazicki, A.E., Gorman, M.G., Briggs, R., Coleman, A.L., Davis, C., Singh, S., McGonegle, D., Clarke, S.M., Volz, T., Hutchinson, T., McGuire, C., Fratanduono, D.E., Swift, D.C., Folsom, E., Bolme, C.A., Gleason, A.E., Coppari, F., Ja Lee, H., Nagler, B., Cunningham, E., Heimann, P., Kraus, R.G., Rudd, R.E., Duffy, T.S., Eggert, J.H. and Wicks, J.K.  “Development of slurry targets for high repetition-rate x-ray free electron laser experiments” Journal of Applied Physics, 131:24 (2022)

Dutta, R., Tracy, S.J., Cohen, R.E., Miozzi, F., Luo, K., Yang, J., Burnley, P.C., Smith, D., Meng, Y., Chariton, S., Prakapenka, V.B. and Duffy, T. “Ultrahigh pressure disordered eight-coordinated phase of Mg2GeO4: Analogue for super-Earth mantlesProceedings of the National Academy of Sciences of the United States of America, 119:8 (2022).



Renganathan, P., Duffy T. S., and Gupta Y. M., "Sound velocities in shock compressed soda lime glass: Melting and liquid state response." Physical Review B, 104:014113 (2021).

Han S, Smith R. F. Kim D., Wicks J. K., Rygg J. R., Lazicki A., Eggert J. H., and Duffy T. S., "Polymorphism of gold under laser-based ramp compression to 690 GPa,"  Physical Review B, 184109, (2021).

Coppari, F., Smith R. F., Wang J., Millot M., Kim D., Hamel S., Eggert J. H., and Duffy T.S., "Implications of the iron oxide phase transition on the interiors of rocky exoplanets.Nature Geoscience14, 121-126, (2021).

Kim, D., Tracy S. J., Smith R. F., Gleason A. E., Bolme C. A., Prakapenka V. B., Appel K., Speziale S., Wicks J. K., Berryman E. J., Han S. K., Schoelmerich M., Lee H. J., Nagler B.,  Cunningham E. F., Akin M., Asimow P. D., Eggert J. H., and Duffy T. S., "Femtosecond x-ray diffraction of laser-shocked forsterite, (Mg2SiO4), to122 GPa." Journal of Geophysical Research: Solid Earth126, e2020JB020337, 2021.



Glam B., Tracy S.J., Smith, R.F., Wicks J.K., Fratanduono D.e. Gleason A. E., Bolme C. A., Prakapenka V. B, Speziale S., Appel K., Lee H.J., MacKinnon A., Tavella F., Eggert J.H., Duffy, T.S. "Structure of boron carbide under laser-based shock-compression at 51 GPa.AIP Conference Proceedings 2272:100010(1-6) (2020).

Tracy S.J., Turneaure S.J., and Duffy T.S. Structural response of α-quartz under plate-impact shock compression." Science Advances 2020:6(35) (2020).



Berryman E.J., Winey J.M., Gupta Y.M. and Duffy T.S. "Sound Velocities in Shock-Synthesized Stishovite to 72 GPa." Geophysical Research Letters. 46:13695-13703 (2019).

Berryman E.J., Zhang D., Wunder B. and Duffy T.S. "Compressibility of synthetic Mg-Al tourmalines to 60 GPa.American Mineralogist 104:1005-1015 (2019).

Tracy S.J., Smith R.F., Wicks J.K., Fratanduono D.E., Gleason A.E., Bolme C.A., Prakapenka V.B., Speziale S., Appel K., Fernandez-Pañella A. et al. "In situ observation of a phase transition in silicon carbide under shock compression using pulsed x-ray diffraction.Physical Review B 99 (2019).

Dutta R., Greenberg E., Prakapenka V.B. and Duffy T.S. "Phase transitions beyond post-perovskite in NaMgF3 to 160 GPa.Proceedings of the National Academy of Sciences 116:19324-19329 (2019).

Duffy, T.S. and Smith R.F. "Ultra-High Pressure Dynamic Compression of Geological Materials.Frontiers in Earth Science 7 (2019).

Dutta R., Kiefer B., Greenberg E., Prakapenka V.B. and Duffy T.S. "Ultrahigh-Pressure Behavior of AO2 (A = Sn, Pb, Hf) Compounds.The Journal of Physical Chemistry C 123:27735-27741 (2019). 



Wicks J.K., Smith R.F., Fratanduono D.E., Coppari F., Kraus R.G., Newman M.G., J. Rygg R., Eggert J.H. and Duffy T.S. "Crystal structure and equation of state of Fe-Si alloys at super-Earth core conditions.Science Advances 4:eaao5864 (2018).

Smith R.F., Fratanduono D.E., Braun D.G., Duffy T.S., Wicks J.K., Celliers P.M., Ali S.J., Fernandez-Pañella A., Kraus R.G., Swift D.C. et al. "Equation of state of iron under core conditions of large rocky exoplanets.Nature Astronomy 2:591 (2018). (Correction)

Dutta R., White C. E., Greenberg E., Prakapenka V. B.,  and Duffy T.S.  "Equation of state of the α-PbO2 and Pa3-type phases of GeO2 to 120 GPa.Physical Review B 98 (2018). 

Tracy S.J., Turneaure S.J. and Duffy T.S. "In situ X-ray diffraction of shock-compressed fused silica." Phys. Rev. Lett. 120:135702 (2018).

Dutta R., Tracy S.J., Stan C.V., Prakapenka V.B., Cava R.J. and Duffy T.S. "Phase stability of iron germanate FeGeO3 to 127 GPa.Physics and Chemistry of Minerals 45, no. 4 (2018).

Duffy, T.S. "Single-crystal elastic properties of minerals and related materials with cubic symmetry.American Mineralogist 103:977-988 (2018).

Mi Z., Shieh S.R., Kavner A., Kiefer B., Wenk H.-R. and Duffy T.S.. "Strength and texture of sodium chloride to 56 GPa.Journal of Applied Physics 123:135901 (2018).



Stan C.V., Dutta R., Cava R.J., Prakapenka V.B. and Duffy T.S. "High-Pressure Study of Perovskites and Postperovskites in the (Mg,Fe)GeO3 System.Inorganic Chemistry 56:8026-8035 (2017).

Dutta R., Tracy S. J., Stan C.V., Prakapenka V.B., Cava R.J. , and Duffy T.S. "Phase stability of iron germanate, FeGeO3, to 127 GPa.Physics and Chemistry of Minerals 45:367-379 (2017).



Wicks, J. and Duffy, T.S. "Crystal structures of minerals in the lower mantle." In Deep Earth: Physics and Chemistry of the Lower Mantle and Core. American Geophysical Union 68-88 (2016).

Dorfman S.M., Dutton S.E., Potapkin V., Chumakov A.I., Rueff J.-P., Chow P., Xiao Y., Cava R.J., Duffy T.S., McCammon C.A. et al. "Electronic transitions of iron in almandine-composition glass to 91 GPa.American Mineralogist 101:1659-1667 (2016).

Hong X., Ehm L., Zhong Z., Ghose S., Duffy T.S. and Weidner D.J. "High-energy X-ray focusing and applications to pair distribution function investigation of Pt and Au nanoparticles at high pressures.Sci. Rep. 6:21434 (2016).

Stan C.V., Dutta R., White C.E., Prakapenka V. and Duffy T.S. "High-pressure polymorphism of PbF2 to 75 GPa.Physical Review B 94 (2016).

Wang J., Coppari F., Smith R.F., Eggert J.H., Lazicki A.E., Fratanduono D.E., Rygg J.R., Boehly T.R., Collins G.W. and Duffy T.S. "X-ray diffraction of molybdenum under ramp compression to 1 TPa.Physical Review B 94 (2016).



Ye Y., Jacobsen S.D., Mao Z., Duffy T.S., Hirner S.M. and Smyth J.R.. "Crystal structure, thermal expansivity, and elasticity of OH-chondrodite: trends among dense hydrous magnesium silicates.Contributions to Mineralogy and Petrology 169 (2015).

Wang J., Mao Z., Jiang F. and Duffy T.S. "Elasticity of single-crystal quartz to 10 GPa.Phys Chem Minerals 42:203-212 (Includes corrected version of Table 2) (2015).

Stan C.V., Wang J., Zouboulis I.S., Prakapenka V. and Duffy T.S. "High-pressure phase transition in Y3Fe5O12.Journal of Physics: Condensed Matter 27:405401 (2015).

Finkelstein G.J., Dera P.K. and Duffy T.S. "High-pressure phases of cordierite from single-crystal X-ray diffraction to 15 GPa.American Mineralogist 100:1821-1833 (2015).

Duffy T., Madhusudhan N. and Lee K.K.M.. "Mineralogy of Super-Earth Planets." In: Gerald Schubert (editor-in-chief) Treatise on Geophysics, 2nd edition, Vol 2. Oxford: Elsevier; p. 149-178.(2015).  

Finkelstein G.J., Dera P.K. and Duffy T.S. "Phase transitions in orthopyroxene (En90) to 49 GPa from single-crystal X-ray diffraction.Physics of the Earth and Planetary Interiors 244:78-86 (2015).

Hong X., Duffy, T.S. Ehm, L. and Weidner D.J. "Pressure-induced stiffness of Au nanoparticles to 71 GPa under quasi-hydrostatic loading.Journal of Physics: Condensed Matter 27:485303 (2015).

Dorfman S.M., Shieh S.R. and Duffy T.S. "Strength and texture of Pt compressed to 63 GPa.J. Appl. Phys. 117:065901 (2015).

Wang J., Coppari F., Smith R.F., Eggert J.H., Lazicki A.E., Fratanduono D.E., Rygg J.R., Boehly T.R., Collins G.W. and Duffy T.S. "X-ray diffraction of molybdenum under shock compression to 450 GPa.Phys. Rev. B 92 (2015).



Hong X., Newville M., Duffy T.S., Sutton S.R. and Rivers M.L. "X-ray absorption spectroscopy of GeO2 glass to 64 GPa." Journal of Physics Condensed Matter 26 (2014).

Speziale S., Marquardt H. and Duffy T.S. "Brillouin Scattering and its Application in Geosciences.Reviews in Mineralogy and Geochemistry 78:543-603 (2014).

Dong H., Dorfman S.M., Holl C.M., Meng Y., Prakapenka V.B., He D. and Duffy T.S. "Compression of lithium fluoride to 92 GPa.High Pressure Research 34:39-48 (2014).

Dorfman S.M. and Duffy T.S. "Effect of Fe-enrichment on seismic properties of perovskite and post-perovskite in the deep lower mantle.Geophysical Journal International 197:910-919 (2014).

Finkelstein G.J., Dera P.K., Jahn S., Oganov A.R., Holl C.M., Meng Y. and Duffy T.S. "Phase transitions and equation of state of forsterite to 90 GPa from single-crystal X-ray diffraction and molecular modeling.American Mineralogist 99:35-43 (2014).

Hong X., Ehm L. and Duffy T.S. "Polyhedral units and network connectivity in GeO2 glass at high pressure: An X-ray total scattering investigation.Appl. Phys. Lett. 105:081904 (2014).

Smith R.F., Eggert J.H., Jeanloz R., Duffy T.S., Braun D.G., Patterson J.R., Rudd R.E., Biener J., Lazicki A.E., Hamza A.V. et al. "Ramp compression of diamond to five terapascals.Nature 511:330-333 (2014).

Wang J., Smith R.F., Coppari F., Eggert J.H., Boehly T.R., Collins G.W. and Duffy T.S. "Ramp compression of magnesium oxide to 234 GPa.J. Phys.: Conf. Ser. 500:062002 (2014).

Zouboulis I.S., Jiang F., Wang J. and Duffy T.S. "Single-crystal elastic constants of magnesium difluoride (MgF2) to 7.4 GPa.Journal of Physics and Chemistry of Solids 75:136-141 (2014).

Dong H., Dorfman S.M., Wang,J., He D. and Duffy T.S. "The strength of ruby from X-ray diffraction under non-hydrostatic compression to 68 GPa.Phys Chem Minerals 41:527-535 (2014).

Duffy T.S. "Earth science: Crystallography's journey to the deep Earth.Nature. 506:427-429 (2014).



Dorfman S.M., Meng Y., Prakapenka V.B. and Duffy T.S. "Effects of Fe-enrichment on the equation of state and stability of (Mg,Fe)SiO3 perovskite.Earth and Planetary Science Letters 361: 249-257 (2013).

Coppari F., Smith R.F., Eggert J.H., Wang J., Rygg J.R., Lazicki A., Hawreliak J.A., Collins G.W. and Duffy T.S. "Experimental evidence for a phase transition in magnesium oxide at exoplanet pressures.Nature Geoscience 6:926-929 (2013).

Hong X., Newville M. and Duffy T.S. "High-pressure X-ray absorption fine structure in the diamond anvil cell and its applications in geological materials.J. Phys.: Conf. Ser. 430:012120 (2013).

Dera P., Finkelstein G.J., Duffy T.S., Downs R.T., Meng Y., Prakapenka V. and Tkachev S. "Metastable high-pressure transformations of orthoferrosilite Fs82.Physics of the Earth and Planetary Interiors 221:15-21 (2013).

Wang J., Smith R.F., Eggert J.H., Braun D.G., Boehly T.R., J. Patterson R., Celliers P.M., Jeanloz R., Collins G.W. and Duffy T.S. "Ramp compression of iron to 273 GPa.J. Appl. Phys. 114:023513 (2013).

Zhu H., Bozdaǧ E., Duffy T.S. and Tromp J. "Seismic attenuation beneath Europe and the North Atlantic: Implications for water in the mantle.Earth and Planetary Science Letters 381:1-11 (2013).

Smith R.F., Eggert J.H., Swift D.C., Wang J., Duffy T.S., Braun D.G., Rudd R.E., Reisman D.B., Davis J.-P., Knudson M.D. et al. "Time-dependence of the alpha to epsilon phase transformation in iron.J. Appl. Phys. 114:223507 (2013).

Hong X., Newville M., Duffy T.S., Sutton S.R. and Rivers M.L. "X-ray absorption spectroscopy of GeO2 glass to 64 GPa.Journal of Physics: Condensed Matter 26:035104 (2013).



Hong X., Chen Z. and Duffy T.S. "Absolute x-ray energy calibration over a wide energy range using a diffraction-based iterative method." Rev. Sci. Instrum. 83: 063901 (2012).

Dong H., Dorfman S.M., Chen Y., Wang H., Wang J., Qin J., He D. and Duffy T.S. "Compressibility and strength of nanocrystalline tungsten boride under compression to 60 GPa.J. Appl. Phys. 111:123514 (2012).

Dorfman S.M., Prakapenka V.B., Meng Y. and Duffy T.S. "Intercomparison of pressure standards (Au, Pt, Mo, MgO, NaCl and Ne) to 2.5 Mbar.J. Geophys. Res. 117 (2012).

Mao Z., Lin J.-F., Jacobsen S.D., Duffy T.S., Chang Y.-Y., Smyth J.R., Frost D.J., Hauri E.H. and Prakapenka V.B. "Sound velocities of hydrous ringwoodite to 16GPa and 673K.Earth and Planetary Science Letters 331-332:112-119 (2012).

Dorfman S.M., Shieh S.R., Meng Y., Prakapenka V.B. and Duffy T.S. "Synthesis and equation of state of perovskites in the (Mg,Fe)3 Al2 Si3O12 system to 177 GPa.Earth and Planetary Science Letters 357-358:194-202 (2012).



Duffy T. S. "Earth science: Probing the core’s light elements.Nature 479: 480-481 (2011).

Mao Z., Jacobsen S.D., Frost D.J., McCammon C.A., Hauri E.H. and Duffy T.S.  2011.  "Effect of hydration on the single-crystal elasticity of Fe-bearing wadsleyite to 12 GPa." American Mineralogist. 96:1606-1612 (2011).

Mao Z., Dorfman S.M., Shieh S.R., Lin J.F., Prakapenka V.B., Meng Y. and Duffy T.S. "Equation of state of a high-pressure phase of Gd3Ga5 O12.Phys. Rev. B 83 (2011).

Shim S.-H., LaBounty D. and Duffy T.S. "Raman spectra of bixbyite, Mn2O3, up to 40 GPa.Phys Chem Minerals 38:685-691 (2011).

Shieh S.R., Dorfman, S.M. Kubo, A., Prakapenka V.B. and Duffy T.S. "Synthesis and equation of state of post-perovskites in the (Mg,Fe)3Al2Si3O12 system." Earth and Planetary Science Letters 312:422-428 (2011).

Liu W., Whitaker M.L., Liu Q., Wang L., Nishiyama N., Wang Y., Kubo A., Duffy T.S. and Li B. "Thermal equation of state of CaIrO3 post-perovskite.Phys Chem Minerals 38:407-417 (2011).



Dorfman S.M., Jiang F., Mao Z., Kubo A., Meng Y., Prakapenka V.B. and Duffy T.S. "Phase transitions and equations of state of alkaline earth fluorides CaF2, SrF2, and BaF2 to Mbar pressures.Phys. Rev. B 81 (2010).

Wang J., He D. and Duffy T.S. "Stress state of diamond and gold under nonhydrostatic compression to 360 GPa.J. Appl. Phys. 108 (2010): 063521 (2010).

Mao Z., Jacobsen S.D., Jiang F., Smyth J.R., Holl C.M., Frost D.J. and Duffy T.S. "Velocity crossover between hydrous and anhydrous forsterite at high pressures.Earth and Planetary Science Letters 293 (2010): 250-258  (2010).



Lin J.-F., Wenk H.-R., Voltolini M., Speziale S., Shu J. and Duffy T.S. "Deformation of lower-mantle ferropericlase (Mg, Fe)O across the electronic spin transition.Phys Chem Minerals 36:585-592 (2009).

Dong H., He D., Duffy T.S. and Zhao Y. "Elastic moduli and strength of nanocrystalline cubic BC2N from x-ray diffraction under nonhydrostatic compression.Phys. Rev. B 79 (2009).

Jiang F., Gwanmesia G.D., Dyuzheva T.I. and Duffy T.S. "Elasticity of stishovite and acoustic mode softening under high pressure by Brillouin scattering.Physics of the Earth and Planetary Interiors 172:235-240 (2009).

Shieh S.R., Duffy T.S., Liu Z. and Ohtani E.  "High-pressure infrared spectroscopy of the dense hydrous magnesium silicates phase D and phase E.Physics of the Earth and Planetary Interiors 175:106-114 (2009).



Raitses Y., Skinner C.H., Jiang F. and Duffy T.S. "Raman spectroscopy of carbon dust samples from NSTX.Journal of Nuclear Materials 375:365-369 (2008).

Hirose K., Takafuji N., Fujino K., Shieh S.R. and Duffy T.S.  2008.  "Iron partitioning between perovskite and post-perovskite: A transmission electron microscope study." American Mineralogist. 93:1678-1681 (2008).

Kubo A., Wang Y., Runge C.E., Uchida T., Kiefer B., Nishiyama N. and Duffy T.S.  "Melting curve of silicon to 15 GPa determined by two-dimensional angle-dispersive diffraction using a Kawai-type apparatus with X-ray transparent sintered diamond anvils." Journal of Physics and Chemistry of Solids. 69:2255-2260 (2008).

Duffy T. S. "Some recent advances in understanding the mineralogy of Earth’s deep mantle.Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences 366:4273-4293 (2008).

Mao Z., Jacobsen S.D., Jiang F., Smyth J.R., Holl C.M. and Duffy T.S. "Elasticity of hydrous wadsleyite to 12 GPa: Implications for Earth's transition zone.Geophysical Research Letters 35 (2008).

Kubo A., Kiefer B., Shim S.-H., Shen G., Prakapenka V.B. and Duffy T.S.  "Rietveld structure refinement of MgGeO3 post-perovskite phase to 1 Mbar." American Mineralogist. 93:965-976 (2008).

Miyagi L., Nishiyama N., Wang Y., Kubo A., West D.V., Cava R.J., Duffy T.S. and Wenk H.-R.   "Deformation and texture development in CaIrO3 post-perovskite phase up to 6 GPa and 1300 K." Earth and Planetary Science Letters. 268:515-525 (2008).

Duffy T. S. "Strength of materials under static loading in the diamond anvil cell." AIP Conference Proceedings 955:639-644 (2008).

Jacobsen S.D., Jiang F., Mao Z., Duffy T.S., Smyth J.R., Holl C.M. and Frost D.J.  2008.  "Effects of hydration on the elastic properties of olivine." Geophysical Research Letters. 35 (2008).  (Erratum)

Mao, Z., S. D. Jacobsen, F. Jiang, J.R. Smyth, C. Holl, D. J. Frost, and T. S. Duffy, "Single-crystal elasticity of wadsleyites, β-Mg2SiO4 containing 0.37-1.66 wt % H2O.Earth and Planetary Science Letters, 266, 78-89, 2008 (Erratum: 268, 540-549, 2008).

Jiang F., Majzlan J., Speziale S., He D. and Duffy T.S.  "Single-crystal elasticity of diaspore, AlOOH, to 12 GPa by Brillouin scattering." Physics of the Earth and Planetary Interiors. 170:221-228 (2008).

Duffy T.S.  "Mineralogy at the extremes." Nature. 451:269-270 (2008).

Speziale S., Jiang F., Mao Z., Monteiro P.J.M., Wenk H.-R., Duffy T.S. and Schilling F.R.  "Single-crystal elastic constants of natural ettringite.Cement and Concrete Research 38:885-889 (2008).



Merkel S., McNamara A. K., Kubo A., Speziale S.,  Miyagi L., Meng Y.,  Duffy T.S. and Wenk H. - R. "Deformation of (Mg,Fe) SiO3 Post-Perovskite and D" Anisotropy.Science 316:1729-1732  (2007).

Mao Z., Jiang F. and Duffy T.S.  "Single-crystal elasticity of zoisite Ca2Al3 Si3O12(OH) by Brillouin scattering." American Mineralogist 92:570-576  (2007).

Wan J.T.K., Duffy T.S., Scandolo S. and Car R.  "First-principles study of density, viscosity, and diffusion coefficients of liquid MgSiO3 at conditions of the Earth's deep mantle." Journal of Geophysical Research: Solid Earth 112 (2007).

Shim S., Kubo A. and Duffy, T. S. "Raman spectroscopy of perovskite and post-perovskite phases of MgGeO3 to 123 GPa.Earth and Planetary Science Letters 260:166-178.  (2007).



Runge C.E., Kubo A., Kiefer B., Meng Y., Prakapenka V.B., Shen G., Cava R.J. and  Duffy T.S..  2006.  "Equation of state of MgGeO3 perovskite to 65 GPa: Comparison with the post-perovskite phase." Physics and Chemistry of Minerals. 33:699-709 (2006).

Speziale S., Shieh S.R. and Duffy T.S. "High-pressure elasticity of calcium oxide: A comparison between Brillouin spectroscopy and radial X-ray diffraction." Journal of Geophysical Research: Solid Earth. 111 (2006).

Majzlan J., Speziale S., Duffy T.S. and Burns P.C..  2006.  "Single-crystal elastic properties of alunite, KAl3(SO4)2(OH)6." Physics and Chemistry of Minerals. 33:567-573 (2006).

Jiang F., Speziale S. and Duffy T.S.  "Single-crystal elasticity of brucite, Mg(OH)2, to 15 GPa by Brillouin scattering." American Mineralogist. 91:1893-1900 (2006).

He D. and Duffy T.S.  2006.  "X-ray diffraction study of the static strength of tungsten to 69 GPa." Physical Review B - Condensed Matter and Materials Physics. 73 (2006).

Kubo A., Kiefer B., Shen G., Prakapenka V.B., Cava R.J. and Duffy T.S.  "Stability and equation of state of the post-perovskite phase in MgGeO3 to 2 Mbar." Geophysical Research Letters. 33 (2006).

Merkel S., Kubo A., Miyagi L., Speziale S., Duffy T.S., Mao H.-K. and Wenk H.-R. "Plastic Deformation of MgGeO3 Post-Perovskite at Lower Mantle Pressures.Science 311:644-646  (2006).

Shieh S.R., Duffy T.S., Kubo A., Shen G., Prakapenka V.B., Sata N., Hirose K. and Ohishi Y.  "Equation of state of the postperovskite phase synthesized from a natural (Mg,Fe)SiO3 orthopyroxene.Proceedings of the National Academy of Sciences of the United States of America 103: 3039-3043 (2006).

Shieh S.R., Kubo A., Duffy T.S., Prakapenka V.B. and Shen G.  "High-pressure phases in SnO2 to 117 GPa.Phys. Rev. B 73 (2006).



Speziale S., Jiang F. and Duffy T.S. "Compositional Dependence of the Elastic Wave Velocities of Mantle Minerals: Implications for Seismic Properties of Mantle Rocks." In Earth's Deep Mantle: Structure, Composition, and Evolution, edited by R. van der Hilst, J. D. Bass, J. Matas and J. Trampert, 301-320. Washington, DC: American Geophysical Union, (2005).

Kiefer B. and Duffy T.S. "Finite element simulations of the laser-heated diamond-anvil cell.J. Appl. Phys. 97:114902 (2005).

Kiefer B., Shieh S.R., Duffy T.S. and Sekine T.  "Strength, elasticity, and equation of state of the nanocrystalline cubic silicon nitride γ-Si3N4 to 68 GPa.Phys. Rev. B 72 (2005).

Duffy T.S. "Synchrotron facilities and the study of the Earth's deep interior.Rep. Prog. Phys. 68:1811-1859 (2005).

Yin H., Peterson R.L., Hobart K.D., Shieh S.R., Duffy T.S. and Sturm J.C. "Tunable uniaxial vs biaxial in-plane strain using compliant substrates.Appl. Phys. Lett. 87: 061922  (2005).

Shieh S.R., Duffy T.S. and Shen G. "X-ray diffraction study of phase stability in SiO2 at deep mantle conditions.Earth and Planetary Science Letters 235:273-282 (2005).



Jiang F., Speziale S., Shieh S.R. and Duffy T.S. "Single-crystal elasticity of andradite garnet to 11 GPa.Journal of Physics: Condensed Matter 16:S1041-S1052 (2004).

Speziale S., Duffy T.S. and Angel R.J. "Single-crystal elasticity of fayalite to 12 GPa.J. Geophys. Res. 109 (2004).

Jiang F., Speziale S. and Duffy T.S. "Single-crystal elasticity of grossular- and almandine-rich garnets to 11 GPa by Brillouin scattering.J. Geophys. Res. 109 (2004).

Duffy T.S. 2004.  "Deeper understanding." Nature. 430:409-410 (2004).

Shieh S.R., Duffy T.S. and Shen G.  "Elasticity and strength of calcium silicate perovskite at lower mantle pressures." Physics of the Earth and Planetary Interiors. 143:93-105 (2004).

Shim S.-H., Duffy T.S., Jeanloz R. and Shen G. "Stability and crystal structure of MgSiO3 perovskite to the core-mantle boundary.Geophys. Res. Lett. 31 (2004).

He D., Shieh S.R. and Duffy T.S. "Strength and equation of state of boron suboxide from radial x-ray diffraction in a diamond cell under nonhydrostatic compression.Phys. Rev. B 70 (2004).

Yin H., Hobart K.D., Kub F.J., Shieh S.R., Duffy T.S. and Sturm J.C.  "High-germanium-content SiGe islands formed on compliant oxide by SiGe oxidation.Appl. Phys. Lett. 84:3624 (2004).

Shim S.-H., Duffy T.S., Jeanloz R., Yoo C.-S. and Iota V.  "Raman spectroscopy and x-ray diffraction of phase transitions in Cr2O3 to 61 GPa.Phys. Rev. B 69 (2004).



Yin H., Huang R., Hobart K.D., Liang J., Suo Z., Shieh S.R., Duffy T.S., Kub F.J. and Sturm J.C. "Buckling suppression of SiGe islands on compliant substrates.J. Appl. Phys. 94 (2003): 6875.

Kavner A. and Duffy T.S. "Elasticity and rheology of platinum under high pressure and nonhydrostatic stress.Phys. Rev. B 68 (2003).

Speziale S., Jiang F., Caylor C.L., Kriminski S., Zha C.-S., Thorne R.E. and Duffy T.S. "Sound Velocity and Elasticity of Tetragonal Lysozyme Crystals by Brillouin Spectroscopy.Biophysical Journal 85 (2003): 3202-3213  (2003).

Yin H., Hobart K.D., Kub F.J., Shieh S.R., Duffy T.S. and Sturm J.C. "Strain partition of Si/SiGe and SiO2/SiGe on compliant substrates.Appl. Phys. Lett. 82 (2003): 3853.



Shim S.-H., Duffy T.S. and Takemura K. "Equation of state of gold and its application to the phase boundaries near 660 km depth in Earth's mantle.Earth and Planetary Science Letters 203 (2002): 729-739.

Bo X.-Z., Yao N., Shieh S.R., Duffy T.S. and Sturm J.C. "Large-grain polycrystalline silicon films with low intragranular defect density by low-temperature solid-phase crystallization without underlying oxide.J. Appl. Phys. 91 (2002): 2910.

Shieh S.R. and Duffy T.S. "Raman spectroscopy of Co(OH)2 at high pressures: Implications for amorphization and hydrogen repulsion.Phys. Rev. B 66 (2002).

Shim S.-H. and Duffy T.S. "Raman spectroscopy of Fe2O3 to 62 GPa.American Mineralogist 87 (2002): 318-326.

Speziale S. and Duffy T.S. "Single-crystal elastic constants of fluorite (CaF2) to 9.3 GPa.Physics and Chemistry of Minerals 29 (2002): 465-472.

Yin H., Huang R., Hobart K.D., Suo Z., Kuan T.S., Inoki C.K., Shieh S.R., Duffy T.S., Kub F.J. and Sturm J.C. "Strain relaxation of SiGe islands on compliant oxide.J. Appl. Phys. 91 (2002): 9716.

Shieh S.R., Duffy T.S. and Li B. "Strength and Elasticity of SiO2 across the Stishovite – CaCl2-type Structural Phase Boundary.Phys. Rev. Lett. 89 (2002).

Shim S.-H., Jeanloz R. and Duffy T.S. "Tetragonal structure of CaSiO3 perovskite above 20 GPa.Geophys. Res. Lett. 29 (2002): 19-1–19-4.



Kavner A., Duffy T.S., and Shen G. "Phase stability and density of FeS at high pressures and temperatures: implications for the interior structure of Mars.Earth and Planetary Science Letters 185:25-33 (2001).

Shim S.-H., Duffy T.S. and Shen G. "The post-spinel transformation in Mg2SiO4 and its relation to the 660-km seismic discontinuity.Nature 411 (2001): 571-574. (2001).

Kavner A. and Duffy T.S. "Pressure–volume–temperature paths in the laser-heated diamond anvil cell.J. Appl. Phys. 89:1907 (2001).

Speziale S., Zha C.-S., Duffy T.S., Hemley R.J. and Mao H.-K. "Quasi-hydrostatic compression of magnesium oxide to 52 GPa: Implications for the pressure-volume-temperature equation of state.Journal of Geophysical Research: Solid Earth 106:515-528 (2001).

Shim S.-H., Duffy T.S. and Shen G. "Stability and Structure of MgSiO3 Perovskite to 2300-Kilometer Depth in Earth's Mantle.Science 293:2437-2440 (2001).

Kavner A. and Duffy T.S. "Strength and elasticity of ringwoodite at upper mantle pressures.Geophys. Res. Lett. 28:2691-2694 (2001).

Caylor C.L., Speziale S., Kriminski S., Duffy T.S., Zha C.-S. and Thorne R.E. "Measuring the elastic properties of protein crystals by brillouin scattering." Journal of Crystal Growth. 232:498-501  (2001).



Shim S.-H. and Duffy T.S. "Constraints on the P-V-T equation of state of MgSiO3 perovskite.American Mineralogist 85:354-363 (2000).

Shim S.-H., Duffy T.S. and Shen G. "The equation of state of CaSiO3 perovskite to 108 GPa at 300 K.Physics of the Earth and Planetary Interiors 120 (2000): 327-338  (2000).

Shim S.-H., Duffy T.S. and Shen G. "The stability and P-V-T equation of state of CaSiO3 perovskite in the Earth's lower mantle.J. Geophys. Res. 105 (2000): 25955-25968  (2000).



Duffy T.S., Shen G., Shu J., Mao H.-K., Hemley R.J. and Singh A.K. "Elasticity, shear strength, and equation of state of molybdenum and gold from x-ray diffraction under nonhydrostatic compression to 24 GPa.J. Appl. Phys. 86:6729  (1999).

Duffy, T. S., Shen, G., Heinz, D. L.,  Shu, J., Ma, Y., Mao, H. - K.,  Hemley, R. J. and Singh, A. K. "Lattice strains in gold and rhenium under nonhydrostatic compression to 37 GPa.Phys. Rev. B 60:15063-15073  (1999).



Zha C.-S., Duffy T.S., Downs R.T., Mao H.-K. and Hemley R.J. "Brillouin scattering and X-ray diffraction of San Carlos olivine: direct pressure determination to 32 GPa.Earth and Planetary Science Letters 159:25-33  (1998).

Shen G., Mao H.-K., Hemley R.J., Duffy T.S. and Rivers M.L. "Melting and crystal structure of iron at high pressures and temperatures.Geophysical Research Letters 25:373-376 (1998).

Rivers M. L., Duffy T. S., Wang Y.,  Eng P. J., Sutton S. R. and Shen G. "A New Facility for High-Pressure Research at the Advanced Photon Source." In Properties of Earth and Planetary Materials at High Pressure and Temperature, 79-87. American Geophysical Union, (1998).

Duffy T. S. and Wang Y. "Pressure-volume-temperature equations of state, in Ultrahigh Pressure Mineralogy, edited by R. J. Hemley.Reviews in Mineralogy and Geochemistry 37:425 - 458 (1998).

Mao H.-K., Shen G., Hemley R.J. and Duffy T.S. "X Ray Diffraction with a Double Hot-Plate Laser-Heated Diamond Cell.`23." In Properties of Earth and Planetary Materials at High Pressure and Temperature, 27-34. X-ray diffraction with a double hot-plate laser-heated diamond cell, in High-Pressure Temperature Research, edited by M. H. Manghnani. Washington, DC: American Geophysical Union, (1998).

Shen G., Duffy T., Wang Y., Rivers M. and Sutton S.  1998. Studies on materials under ultrahigh P-T at the advanced photon source. Materials Research Society Symposium - Proceedings. 499:283-288  (1998).



Duffy T.S. and Ahrens T.J. "Dynamic compression of an Fe–Cr–Ni alloy to 80 GPa.Journal of Applied Physics 82 (1997).

Zha, C. - S., T. S. Duffy, H. - K. Mao, R. T. Downs, R. J. Hemley, and D. J. Weidner. "Single-crystal elasticity of β-Mg2SiO4 to the pressure of the 410 km seismic discontinuity in the Earth's mantle.Earth and Planetary Science Letters 147:E9-E15 (1997).



Downs R.T., Zha C.-S., Duffy T.S. and Finger L.W. "Equation of state of forsterite to 17.2 GPa and the effects of pressure media.American Mineralogist 81 (1996).

Zha C.-S., Duffy T.S., Downs R.T., Mao H.-K. and Hemley R.J.  "Sound velocity and elasticity of single-crystal forsterite to 16 GPa.Journal of Geophysical Research: Solid Earth 101 (1996): 17535-17545.



Duffy T.S. and Ahrens T.J. "Compressional sound velocity, equation of state, and constitutive response of shock-compressed magnesium oxide.J. Geophys. Res. 100:529  (1995).

Hemley, R. J., Mao H. - K., Duffy T.S., Eggert J.H., Goncharov A.F., Hanfland M., Li M., Somayazulu M., Vos W. L., and Zha C. - S. "Dense hydrogen in the outer solar system: Implications from recent high‐pressure experiments.AIP Conference Proceedings 341 (1995).

Duffy T.S., Zha C. -S., Downs R.T., Mao H. -K. and Hemley R.J. "Elasticity of forsterite to 16 GPa and the composition of the upper mantle.Nature 378:170-173 (1995).

Duffy T.S., Hemley R.J. and Mao H.-K. "Equation of State and Shear Strength at Multimegabar Pressures: Magnesium Oxide to 227 GPa.Phys. Rev. Lett. 74:1371-1374 (1995).

Duffy T.S. and Hemley R.J..  "Some like it hot: The temperature structure of the Earth Rev. Geophys. 33:5 (1995).

Duffy T.S., Meade C., Fei Y, Mao H. -K. and Hemley R.J.  "High-pressure phase transition in brucite, Mg(OH)2.American Mineralogist 80:222-230 (1995).

Sekine T., Duffy T.S., Rubin A.M., Anderson W.W. and Ahrens T.J. "Shock compression and isentropic release of granite.Geophysical Journal International 120:247-261 (1995).

Duffy T.S., Shu J., Mao H.-K. and Hemley R.J. "Single-crystal x-ray diffraction of brucite to 14 GPa.Physics and Chemistry of Minerals 22:277-281 (1995).

Duffy, T. S., Hemley R. J., and Mao H. - K. "Structure and bonding in hydrous minerals at high pressure: Raman spectroscopy of alkaline earth hydroxides.AIP Conference Proceedings 341 (1995).



Zha C.-S., Hemley R.J., Mao H.-K., Duffy T.S. and Meade C. "Acoustic velocities and refractive index of SiO2 glass to 57.5 GPa by Brillouin scattering.Phys. Rev. B 50:13105-13112  (1994).

Duffy T.S. and Ahrens T.J. "Dynamic response of molybdenum shock compressed at 1400 °C.Journal of Applied Physics 76 (1994).

Duffy T.S., Vos W.L., Zha C.-S., Hemley R.J. and Mao H.-K. "Sound Velocities in Dense Hydrogen and the Interior of Jupiter.Science 263:1590-1593   (1994).

Duffy T.S. and Ahrens T.J. "The temperature sensitivity of elastic wave velocity at high pressure: New results for molybdenum.Geophysical Research Letters 21:473-476   (1994).



Zha C.-S., Duffy T.S., Mao H.-K. and Hemley R.J. "Elasticity of hydrogen to 24 GPa from single-crystal Brillouin scattering and synchrotron x-ray diffraction.Phys. Rev. B 48:9246-9255  (1993).

Duffy T.S. and Ahrens T.J. "Thermal expansion of mantle and core materials at very high pressures.Geophysical Research Letters 20 (1993): 1103-1106 (1993).



Duffy, T. S., and T. J. Ahrens. "Hugoniot Sound Velocities in Metals with Applications to the Earth's Inner Core." In High-Pressure Research: Application to Earth and Planetary Sciences, 353-361. American Geophysical Union, (1992).

Duffy, T. S., and T. J. Ahrens. "Lateral Variations in Lower Mantle Seismic Velocity." In High-Pressure Research: Application to Earth and Planetary Sciences, 197-205. American Geophysical Union (1992).

Duffy, T. S., and T. J. Ahrens. "Sound velocities at high pressure and temperature and their geophysical implications.J. Geophys. Res. 97:4503 (1992).



Duffy, T. S., Ahrens, T. J. and Lange, M. A. "The shock wave equation of state of brucite Mg(OH)2.J. Geophys. Res. 96 (1991): 14319.

Tyburczy, J. A., T. S. Duffy, T. J. Ahrens, and M. A. Lange. "Shock wave equation of state of serpentine to 150 GPa: Implications for the occurrence of water in the Earth's lower mantle.J. Geophys. Res. 96:18011 (1991).



Duffy, T. S. and Anderson, D. L. "Seismic velocities in mantle minerals and the mineralogy of the upper mantle.J. Geophys. Res. 94:1895 (1989).



Duffy, T. S. and Vaughan, M. T. "Elasticity of enstatite and its relationship to crystal structure.J. Geophys. Res. 93:383 (1988).