Dr. Ma's Research Presentations

Department of Mechanical and Aerospace Engineering

North Carolina State University

Last updated Thu Jul 13 17:14:55 EDT 2006



Contributed Presentations
  1. Nancy Ma, "Analysis of melt growth for antimonide-based compound semiconductor crystals in magnetic and electric fields," Air Force Office of Scientific Research Program Review, Atlanta, GA, August 7, 2006.
  2. Nancy Ma, "Analysis of melt growth for antimonide-based compound semiconductor crystals in magnetic and electric fields," Air Force Office of Scientific Research Program Review, Long Beach, CA, August 29, 2005.
  3. Xianghong Wang, Nancy Ma, David F. Bliss, Gerald W. Iseler and Piotr Becla, "Vertical Bridgman growth of compound semiconductor crystals using a submerged heater with a rotating magnetic field," AACG 16th American Conference on Crystal Growth and Epitaxy, Big Sky, MT, July 12, 2005. (presented by Xianghong Wang)
  4. Xianghong Wang, Nancy Ma, David F. Bliss, Gerald W. Iseler and Piotr Becla, "Comparing modified vertical gradient freezing with rotating magnetic fields or with steady magnetic and electric fields," AACG 16th American Conference on Crystal Growth and Epitaxy, Big Sky, MT, July 12, 2005. (presented by Xianghong Wang)
  5. Xianghong Wang, Nancy Ma, David F. Bliss and Gerald W. Iseler, "Semiconductor crystal growth by modified vertical gradient freezing with electromagnetic stirring," AIAA 43rd Aerospace Sciences Meeting and Exhibit, AIAA Paper #2005-0916, Reno, NV, January 12, 2005.
  6. Martin V. Farrell and Nancy Ma, "Alloy segregation during Bridgman crystal growth in the presence of axial and transverse magnetic fields," AACG 15th American Conference on Crystal Growth and Epitaxy, Keystone, CO, July 22, 2003.
  7. Nancy Ma, David F. Bliss and Gerald W. Iseler, "Steady versus transient dopant transport models for vertical gradient freezing growth with a submerged heater and electromagnetic stirring," AACG 15th American Conference on Crystal Growth and Epitaxy, Keystone, CO, July 22, 2003.
  8. Joseph C. Dust and Nancy Ma, "Macrosegregation during directional solidification of alloyed semiconductor crystals with a transverse magnetic field," AIAA 41st Aerospace Sciences Meeting and Exhibit, AIAA Paper #2003-1310, Reno, NV, January 9, 2003.
  9. Joseph L. Morton, Nancy Ma, David F. Bliss and George G. Bryant, "Effect of a strong magnetic field on segregation during liquid-encapsulated Czochralski crystal growth," AACG 14th American Conference on Crystal Growth and Epitaxy, Seattle, WA, August 6, 2002.
  10. Nancy Ma, "Solutal convection during melt growth of alloyed semiconductor crystals in a steady magnetic field," AIAA 40th Aerospace Sciences Meeting and Exhibit, AIAA Paper #2002-1113, Reno, NV, January 17, 2002.
  11. Nancy Ma, David F. Bliss and George G. Bryant, "Segregation during magnetically-stabilized liquid-encapsulated growth of compound semiconductor crystals," ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, November 5, 2000. (presented by Joseph L. Morton)
  12. Nancy Ma, John S. Walker, Anke Ludge and Helge Riemann, "Combining a rotating magnetic field and crystal rotation in the floating zone process with a needle eye induction coil," 3rd International Workshop on Modelling in Crystal Growth, Hauppauge, NY, October 19, 2000.
  13. Nancy Ma, "Models of mass transport during microgravity crystal growth of alloyed semiconductor crystals in a magnetic field," NASA Microgravity Materials Science Conference, Huntsville, AL, June 7, 2000.
  14. Julie M. Hirtz and Nancy Ma, "Scaleability of dopant composition in semiconductor crystals grown by the Bridgman process in the presence of magnetic fields," AIAA 38th Aerospace Sciences Meeting and Exhibit, AIAA Paper #2000-1019, Reno, NV, January 2000. (presented by Julie M. Hirtz)
  15. Nancy Ma, David F. Bliss and George G. Bryant, Electromagnetic control of dopant segregation during liquid-encapsulated crystal growth of compound semiconductors," AACG 11th Annual Conference on Crystal Growth and Epitaxy, Tucson, AZ, August 3, 1999.
  16. Nancy Ma and John S. Walker, "Segregation during Bridgman crystal growth with an axial magnetic field," International Scientific Colloquium on Modelling of Materials Processing, Riga, Latvia, May 18, 1999.
  17. Nancy Ma, "A model of dopant transport during vertical Bridgman crystal growth with an axial magnetic field," AACG Eastern Regional Conference on Crystal Growth and Epitaxy, Atlantic City, NJ, September 28, 1998.
  18. Nancy Ma and John S. Walker, "Dopant transport during semiconductor crystal growth with magnetically damped buoyant convection," 2nd International Workshop on Modelling in Crystal Growth, Durbuy, Belgium, October 14, 1996.
  19. Nancy Ma, Andrew P. Anselmo, David F. Bliss and John S. Walker, "Radio-frequency induction heating for semiconductor crystal growth from a crucible," ASME 31st National Heat Transfer Conference, Houston, TX, August 5, 1996.
  20. Nancy Ma and John S. Walker, "Tailored magnetic damping of g-jitter driven buoyant convection during Bridgman growth of semiconductor crystals in space," AIAA 34th Aerospace Sciences Meeting and Exhibit, AIAA Paper #96-0252, Reno, NV, January 15, 1996.
  21. Nancy Ma, John S. Walker, Gita Talmage, Samuel H. Brown and Neal A. Sondergaard, "Liquid-metal sliding electrical contacts for homopolar motors and generators," 3rd International Offshore and Polar Engineering Conference, Singapore, June 9, 1993.


Invited Presentations
  1. "Numerical models for growth of doped and alloyed semiconductor crystals by vertical gradient freezing with magnetic and electric fields," Sensors Directorate, U. S. Air Force Research Laboratory, Hanscom Air Force Base, MA, June 13, 2003.
  2. "Transport phenomena during growth of semiconductor crystals in steady and rotating magnetic fields," Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, November 14, 2000.
  3. "Transport phenomena during growth of semiconductor crystals in steady and rotating magnetic fields," Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, November 9, 2000.
  4. "Dopant segregation during Bridgman growth of semiconductor crystals in the presence of a magnetic field," Department of Mechanical Engineering, University of Wisconsin, Madison, WI, April 26, 2000.
  5. "Dopant segregation during Bridgman growth of semiconductor crystals in the presence of a magnetic field," Materials Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan, December 23, 1999.
  6. "Species transport during semiconductor crystal growth by the vertical Bridgman process with an axial magnetic field," Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH, October 8, 1999.
  7. "Use of asymptotic methods in modelling of transport phenomena during semiconductor crystal growth in the presence of magnetic fields," Institute of Crystal Growth, Berlin, Germany, June 1, 1999.
  8. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical Engineering, University of Kentucky, Lexington, KY, May 13, 1997.
  9. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri, Rolla, MO, April 22, 1997.
  10. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI, April 7, 1997.
  11. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical Engineering, Purdue University, West Lafayette, IN, March 24, 1997.
  12. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical Engineering, Washington University, St. Louis, MO, March 13, 1997.
  13. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA, February 19, 1997.
  14. "Bulk growth of semiconductor crystals in a magnetic field. A study of dopant transport," Department of Mechanical Engineering, Pennsylvania State University, University Park, PA, January 23, 1997.