Alisha Clark

Expertise

• Physical properties of silicate glasses and melts at high pressure
• Structure and properties of planetary interiors
• X-ray microtomography at high pressures and temperatures

Function and attachment

Post-doctoral fellow

Career

• 2016-present: Postdoc (IMPMC UPMC)
• 2008- 2015: Graduate research and teaching assistant (UC Davis)
• 2006-2008: Laboratory Manager – Experimental Petrology and Material Synthesis Laboratory (UC Davis)
• 2002-2007: undergraduate student (UC Davis)

Publications

• Clark, A. N., Lesher, C.E., Jacobsen, S.D., & Wang, Y. Anomalous density and elastic properties of basalt at high pressure: Implications for reduction of seismic velocity in the Earth’s crust and upper mantle. (In Review) Journal of Geophysical Research.
• Clark, A.N., Lesher, C.E., Jacobsen, S.D., & Sen. S. (2014) Mechanisms of anomalous compressibility of vitreous silica. Physical Review B. 90, 174110
• Wang, Y., Lesher, C.E., Fiquet, G., Rivers, M.L., Nishiyama, N., Siebert, J., Roberts, J., Morard, G., Gaudio, J., Clark, A.N., Watson, H., Menguy, N., & Guyot, F. (2011) In situ high-pressure and temperature x-ray microtomographic imaging during large deformation: A new technique for studying mechanical behavior of multi-phase composites. Geosphere. 7(1), 40-53.
• Lesher, C.E., Wang, Y.B., Gaudio, S.J., Clark, A.N., Nishiyama, N., and Rivers, M.L. (2009) Volumetric properties of magnesium silicate glasses and supercooled liquids at high pressure by X-ray microtomography. Physics of the Earth and Planetary Interiors.174, 292-301.
• Zhang, P., Navrotsky, A., Guo, B., Kennedy, I., Clark, A.N., Lesher, C., and Liu, Q. (2008) Energetics of Cubic and Monoclinic Yttrium Oxide Polymorphs: Phase Transitions, Surface Enthalpies, and Stability at the Nanoscale. The Journal of Physical Chemistry C, 112(4), 932-938.
• Sen, S., Soyer-Uzun, S., Gjersing, E.L., Aitken, B.G., Gaudio, S., Clark, A.N., and Lesher, C.E. (2007) Pressure-induced instabilities of low-dimensional structural units in chalcogenide glasses at ambient temperature. Journal of Optoelectronics and Advanced Materials, 9(11), 3553-3557.

French and foreign diplomas

• Jan 2012- Dec 2015

  Ph.D., Geology                                                                            

  University of California, Davis, CA

  Dissertation Title: “Geologic Applications for the Anomalous Elastic and Volumetric Properties of Amorphous Silicates”

• Sept 2008 - Dec 2011

  M.S., Geology                                                                               

  University of California, Davis, CA

  Thesis Title: “On the Anomalous Compressibility of Vitreous Silica:  New Insights from High Pressure X-ray Microtomography and Gigahertz Ultrasonic Interferometry”

• March 2007

  B.S., Geology (Geochemistry emphasis)                                              

  University of California, Davis, CA

  Thesis Title: “The high pressure viscosity of lithium disilicate and applicability of the Faxén correction for high pressure silicate melts”

Clubs, learned societies and associations

• American Ceramic Society                                                                         
• Geological Society of America                                                                   
• COMPRES (Current Chair of the COMPRES Graduate Student and Postdoc committee)
• American Geophysical Union                                                                                
• Mineralogical Society of America                                                              
• Geochemical Society