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My profile

Full name

William Barvosa-Carter

URL of homepage

http://www.hrl.com

Job function

Scientist

Job sector

Industry

Company or institution

HRL Laboratories (formerly Hughes Research Laboratories)

Title of group

Sensors and Materials

Doctoral thesis advisor

Michael J. Aziz

Doctoral thesis advisor 2

James R. Rice

My resume

Resume

William Barvosa-Carter, Ph.D.

Senior Research Scientist
HRL Laboratories, LLC
3011 Malibu Cyn. Rd. Malibu CA USA
Ph. 001-310-317-5604
Email: wbc97@post.harvard.edu

Education:
Harvard University, Ph.D. in Applied Physics 1997
S.M. in Applied Physics 1992
University of Colorado, B.A. in Physics 1990

Research Experience:
Current Research Position: Senior Research Scientist, Sensors and Materials Laboratory, HRL Laboratories, LLC, Dr. Leslie Momoda, Director (2000-present)
• Over-the-horizon materials research for automotive and aerospace applications
• Research areas: Smart materials and mechatronics, hierarchical and bio-inspired materials, thin-film and nano-thermal materials, III-V semiconductor growth

Postdoctoral Research: UCLA Dept of Mathematics and HRL Laboratories, Prof. Russell Caflisch (UCLA), Drs. Jennifer Zinck and Mark Gyure (HRL) advisors (1999-2000); Naval Research Laboratory, Surface Chemistry Branch, Dr. Lloyd Whitman advisor. (1997-1999)
• Joint HRL/NRL/UCLA program on Virtual Integrated Prototyping of III-V Devices
• Research areas: Scanning tunneling microscopy of III-V semiconductor surfaces and interfaces, ab-initio and empirical kinetic Monte-Carlo modeling of MBE growth

Doctoral Research: Harvard University, Division of Engineering and Applied Sciences, Professor Michael J. Aziz, advisor (1990-1997)
• Ph.D. Dissertation: “Stress Effects on Kinetics and Interfacial Roughening During Solid Phase Epitaxy.”
• Research area: Kinetically-driven morphological instabilities at growth fronts due to elastic stress; Kinetics of crystallization in the presence of applied external stress and inhomogeneous composition fields.

Undergraduate Research: Los Alamos Nat. Lab. Dr. David Schiferl, supervisor (1986-1990)
• Research area: High pressure solid-state physics; Phase diagram determination of simple molecular systems at ultrahigh pressure and low temperature using Raman spectroscopy and x-ray crystallography.

Technical Background and Expertise
• High-resolution microscopy and materials analysis: STM, AFM, TEM, SEM
• Thin-film and nano-material synthesis techniques: MBE, ion-beam sputtering, CVD
• High-pressure/high-temperature techniques, conventional & nano-mechanical testing
• Numerical simulation techniques (FEM, stress-strain analysis, Monte-carlo)
• In-situ and ex-situ surface and materials analysis techniques: RBS, Auger, LEED, DSC, TGA, DMA, FTIR, Raman
• Broad background in fundamental surface and nano-scale phenomena, kinetics of phase transitions and mechanical properties of materials
• Automotive and aerospace materials technologies
Research Interests
• Hierarchical and bio-inspired materials, structures, and processes
• Hybrid active/adaptive materials (e.g. multiferroics, smart fluids)
• High pressure physics, chemistry, and techniques
• Kinetics and phase transitions at ultrahigh pressure and non-hydrostatic stress
• Scanned-probe microscopy for surface and interfacial materials science
• Combined experimental/simulation approaches to complex materials problems
• Technology transition processes, bridging innovation to commercial implementation
Business Development Experience
• Current HRL program manager for Boeing-directed research in advanced structural materials, thermal materials coatings and interfaces.
• Experienced team leader and member of proposal and business development for General Motors, Boeing, Raytheon, as well as numerous government solicitations.
• 7 years experience as exploratory research project manager targeting advanced automotive and aerospace applications.
Teaching Experience
• Teaching fellow, Harvard University (1991-1993): Introduction to Materials Science, Prof. M.J. Aziz, instructor
Highlighted publications:

1. “Micro-truss structures from self-propagating photopolymer waveguides” A. Jacobsen, W. Barvosa-Carter and S. Nutt, Forthcoming in Advanced Materials (2007)
DOI: 10.1002/adma.200700797

2. “Solid-state actuation based on reversible Li electroplating” W. Barvosa-Carter, C. Massey, G. McKnight, and P. Liu, Proc. of SPIE, Smart Materials and Structures, Active Materials: Behavior and Mechanics, 5761, pp. 90-97 (2005).

3. "Atomic scale structure of InAs(001)-(2x4) steady-state surfaces determined by scanning-tunneling microscopy and density functional theory" W. Barvosa-Carter, R.S. Ross, C. Ratsch, F. Grosse, J.H.G. Owen, and J.J. Zinck, Surface Science Letters 499, L129 (2002)

4. "Arsenic flux dependence of island nucleation on InAs(001)" F. Grosse, W. Barvosa-Carter, J.J. Zinck, M. Wheeler, and M. F. Gyure, Physical Review Letters 89 116102 (2002)

5. “Time–resolved measurements of stress effects on solid-phase epitaxial growth of intrinsic and doped Si” W. Barvosa-Carter and M. J. Aziz, Applied Physics Letters 79, 356 (2001).

6. “Structure of III-Sb(001) growth surfaces: The role of heterodimers” W. Barvosa-Carter, A.S. Bracker, J.C. Culbertson, B.Z. Nosho, B.V. Shanabrook, L.J. Whitman, H. Kim, N.A. Modine and E. Kaxiras, Physical Review Letters 84 4649 (2000).

7. “Kinetically driven growth instability in stressed solids” W. Barvosa-Carter, M. J. Aziz, T. Kaplan, and L.J. Gray, Physical Review Letters, 81 1445 (1998).

Additional publications:

8. “Kagome-based micro-scale truss architectures formed from self-propagating polymer waveguides” A. Jacobsen, W. Barvosa-Carter and S. Nutt, Submitted to Acta Materialia (2007)

9. “Shear behavior of polymer micro-truss structures formed from self-propagating polymer waveguides” A. Jacobsen, W. Barvosa-Carter and S. Nutt, Accepted for publication in Acta Materialia (2007)

10. “Compression behavior of polymer micro-truss structures formed from self-propagating polymer waveguides” A. Jacobsen, W. Barvosa-Carter and S. Nutt, Acta Materialia 55 6724 (2007)

11. “Active Material-Based Reversible Attachments: Shape memory polymer Based” W. Barvosa-Carter, T.B. Stanford, N.L. Johnson and A.L. Browne, Submitted to Proc of SPIE, Smart Materials and Structures 2008

12. “Active Material-Based Reversible Attachments: SMA Based” W. Barvosa-Carter, N.L. Johnson, and A.L. Browne, Proceedings of CANSMART – International Workshop on Smart Materials and Structures, Oct 10-11, 2007, Montreal, Quebec, Canada.

13. “Strain-stabilized solid phase epitaxy of Si-Ge on Si” J. F. Sage, W. Barvosa-Carter, and M. J. Aziz, Journal of Applied Physics 99 113529 (2006)

14. “Dielectric elastomer based reversible attachments” Kevin Holabird, C. Henry, E. Sherman, and W. Barvosa-Carter, Proceedings of SAMPE 2006 - Long Beach, CA April 30 - May 4, (2006)

15. “Graphitic structures for electrochemical actuation” C. Massey, W. Barvosa-Carter, P. Liu, Proceedings of SAMPE 2006 - Long Beach, CA April 30 - May 4, (2006)

16. “Reversible work by electrochemical intercalation of graphitic materials” C. Massey, W. Barvosa-Carter, G. McKnight, and P. Liu, Proc. of SPIE, Smart Structures and Materials 2005: Electroactive Polymer Actuators and Devices (EAPAD), 5759, 322-330 (2005).

17. “Towards high temperature actuation using graphite intercalation compounds” C. Massey, W. Barvosa-Carter, and P. Liu, Proc. of ASME International Mechanical Engineering Congress, Orlando, FL, November 5-11, (2005).

18. “Interfacial roughening during solid phase epitaxy: Interaction of dopant, stress, and anisotropy effects” W. Barvosa-Carter, M.J. Aziz, A.-V. Phan, T. Kaplan and L.J. Gray, J. Appl. Phys. 96 5462 (2004)

19. “Graphite intercalation compounds as actuation materials” C. Massey, G. McKnight, P. Liu, and W. Barvosa-Carter, Proc. of ASME International Mechanical Engineering Congress, Anaheim, CA November 13–19 (2004)

20. “Spin relaxation in (110) and (001) InAs/GaSb superlattices” K. C. Hall, K. Gündodu, E. Altunkaya, W. H. Lau, M. E. Flatté, T. F. Boggess, J. J. Zinck, W. Barvosa-Carter, and S. L. Skeith, Phys. Rev. B. 68 115311 (2003)

21. “Measurement of V/III ratio using threshold photoemission” J. J. Zinck, J. H. G. Owen, and W. Barvosa-Carter, J. Vac. Sci. Technol. B 21, 1126 (2003)

22. "Sb-terminated InAs(001)-(2x4) and (2x8) studied using scanning tunneling microscopy and ab initio density functional theory" W. Barvosa-Carter, F. Grosse, J. H.G. Owen, and J. J. Zinck, Mat. Res. Soc. Symp. Proc. 692, H8.4.1 (2002)

23. "Microscopic mechanisms of surface phase transitions on InAs(001)" F. Grosse, W. Barvosa-Carter, J. J. Zinck, and M. F. Gyure, Phys. Rev. B 66, 075321 (2002)

24. "Atomistics of III–V semiconductor surfaces: Role of group V pressure" F. Grosse, W. Barvosa-Carter, J. J. Zinck, and M. F. Gyure, J. Vac. Sci. Technol. B 20, 1178 (2002)

25. "Atomistic modeling of III-V semiconductors: Thermodynamic equilibrium and growth kinetics" F. Grosse, W. Barvosa-Carter, J. J. Zinck, and M. F. Gyure, Mat. Res. Soc. Symp. Proc. 692, T3.6.1 (2002)

26. “Modeling a growth instability in stressed boron doped silicon” A.-V. Phan, T. Kaplan, L.J. Gray, D. Adalsteinsson, J.A. Sethian, W. Barvosa-Carter, and M.J. Aziz, Proceedings of Fifth International Conference on Modeling and Simulation of Microsystems, Puerto Rico, April 22-25, (2002)

27. "Growth, characterization, and spin dynamics of AlSb/GaSb/InAs heterostructures in [100] and [110] orientations" J.J. Zinck, W. Barvosa-Carter, S.L. Skeith, R.S. Ross, T.F. Boggess, K.C. Hall, K. Gundogdu, E. Altunkaya, C. Ratsch, F. Grosse, Proceedings of the 2002 International Conference on Molecular Beam Epitaxy, p. 409-410, (2002)

28. "In-situ threshold photoemission yields correlated to reconstructions of InAs (001)" J. J. Zinck, R. Ross, J. H. G. Owen, W. Barvosa-Carter, F. Grosse, and C. Ratsch, Appl. Phys. Lett. 79, 2354 (2001)

29. “Microscopic characterization of InAs/InGaSb/InAs/AlSb laser structure interfaces” W. Barvosa-Carter, M.E. Twigg, M.-J. Yang, and L.J. Whitman, Phys. Rev. B 63, 245311 (2001)

30. "Modeling a growth instability in a stressed solid" A.-V. Phan, T. Kaplan, L.J. Gray, D. Adalsteinsson, J.A. Sethian, W. Barvosa-Carter and M.J. Aziz, Modelling and Simulation in Materials Science and Engineering 9, 309 (2001)

31. "Initial stages of Sb2 deposition on InAs(001)"B. Z. Nosho, B. V. Shanabrook, B. R. Bennett, W. Barvosa-Carter, W. H. Weinberg, and L. J. Whitman, Surface Science 478, 1 (2001)

32. "Stoichiometry-induced roughness on antimonide growth surfaces" A. S. Bracker, B. Z. Nosho, W. Barvosa-Carter, L. J. Whitman, B. R. Bennett, B. V. Shanabrook, and J. C. Culbertson, Appl. Phys. Lett. 78, 2440 (2001)

33. "Type-II antimonide quantum wells for mid-infrared lasers" M. J. Yang, J. R. Meyer, W. W. Bewley, C. L. Felix, I. Vurgaftman, W. Barvosa-Carter, L. J. Whitman, R. E. Bartolo, D. W. Stokes, H. Lee, and R. U. Martinelli, Opt. Mater. 17, 179 (2001)

34. "Interpreting interfacial structure in cross-sectional STM images of III-V semiconductor heterostructures" B. Z. Nosho, W. Barvosa-Carter, M.J. Yang, B. R. Bennett, and L. J. Whitman, Surface Science 465 361 (2000)

35. “Surface reconstructions for InAs(001) studied with DFT and STM” C. Ratsch, W. Barvosa-Carter, F. Grosse, J.H.G. Owen, and J.J. Zinck, Phys. Rev. B. Rapid Comm. 62 R1779 (2000)

36. “Morphological instability of growth fronts due to stress-induced mobility variation” J.F. Sage, W. Barvosa-Carter, and M.J. Aziz, , Appl. Phys. Lett. 77, 516 (2000)

37. “Growth oscillation decay rates for control of III–V molecular beam epitaxy near stoichiometry” J.H.G. Owen, W. Barvosa-Carter, and J.J. Zinck, Appl. Phys. Lett. 76 3070 (2000)

38. "The contribution of antimonide surface reconstructions to heterostructure interface roughness" A. S. Bracker, W. Barvosa-Carter, J. C. Culbertson, B. Z. Nosho, L. J. Whitman, B.V. Shanabrook, B. R. Bennett, and M. J. Yang, in Narrow Gap Semiconductors, edited by N. Puhlman, H.-U. Müller, and M. von Ortenberg, p. 27 (Humboldt University, Berlin, 2000)

39. "Engineered heterostructures of 6.1 Å III-V semiconductors for advanced electronic and optoelectronic applications" B. V. Shanabrook, W. Barvosa-Carter, R. Bass, B. R. Bennett, J.B. Boos, W. W. Bewley, A. S. Bracker, J. C. Culbertson, E. R. Glaser, W. Kruppa, R. Magno, W. J. Moore, J. R. Meyer, B. Z. Nosho, D. Park, P. M. Thibado, M. E. Twigg, R. J. Wagner, J. R. Waterman, L. J. Whitman, and M. J. Yang, in Engineered Nanostructural Films and Materials, SPIE Vol. 3790, 13 (1999)

40. “Characterization of AlSb/InAs surfaces and resonant tunneling devices” B.Z. Nosho, W.H. Weinberg, W. Barvosa-Carter, A.S. Bracker, R. Magno, B.R. Bennett, J.C. Culbertson, B.V. Shanabrook, and L.J. Whitman, J. Vac. Sci. Technol. B 18 1786 (1999)

41. “Effects of surface reconstruction on III-V Semiconductor interface formation: The role of III/V composition” B.Z. Nosho, W.H. Weinberg, W. Barvosa-Carter, B.R. Bennett, B.V. Shanabrook, and L.J. Whitman, Appl. Phys. Lett. 74 1704 (1999)

42. “Pressure measurement at high temperature using ten Sm:YAG fluorescence peaks” Y.C. Zhao, W. Barvosa-Carter, S. D. Theiss, S. Mitha, M. J. Aziz, and D. Schiferl, J. Appl. Phys. 84, 4049 (1998)

43. "Effect of non-hydrostatic stress on kinetics and interfacial roughness during solid phase epitaxial growth in Si" W. Barvosa-Carter and M.J. Aziz, Mat. Res. Soc. Symp. Proc. 441, 621 (1997)

44. “New phase of oxygen at high pressure and low temperature” W. Carter, D. Schiferl, M. L. Boas, and D. Gonzales, J. Phys. Chem., 95 (1991)

Issued U.S. Patents:

1. US 7,305,824 “Power-off hold element” W. Barvosa-Carter, C. Massey (2007)

2. US 7,298,017 “Actuation using lithium/metal alloys and actuator device” P. Liu, C. Massey, L. Momoda, G. McKnight, W. Barvosa-Carter, A. Jacobsen (2007)

3. US 7,267,367 “Reversibly expandable energy absorbing assembly utilizing shape memory foams for impact management and methods for operating the same” W. Barvosa-Carter, N.L. Johnson, A.L. Browne, G.A. Herrera, G.P. McKnight, and C. Massey (2007)

4. US 7,264,271 “Reversibly deployable energy absorbing assembly and methods for operating the same”, W. Barvosa-Carter, N.L. Johnson, A.L Browne, G.A. Herrera, and G.P. McKnight (2007)

5. US 7,258,347 “Discrete active seal assemblies” A.C. Keefe, W. Barvosa-Carter, C.P. Henry, G.A. Herrera, G.P. McKnight, A.L. Browne and N.L. Johnson (2007)

6. US 7,242,483 “Smart spacecraft structures based on laser metrology”, K. Liu, C.G. Massey, W. Barvosa-Carter, and M. Nolan (2007)

7. US 7,205,699 “Solid state actuation using graphite intercalation compounds” P. Liu, C.G. Massey, G.P. McKnight, W. Barvosa-Carter and G. Herrera (2007)

8. US 7,178,395 “Control logic for fluid flow control devices” A.L Browne, N.L. Johnson, T.J Juechter, E.D. Moss J.H. Aase, T.H. Froling G.L. Jones, B. Khalighi, C.A. Koromilas, C.W. Charles, G.P. McKnight, W. Barvosa-Carter, L.A. Momoda, F.K. Schenkel, L.E. Peruski, and J.M. Pleune, (2007)

9. US 7,146,690 “Releasable fastener system” T.B. Stanford, Jr., A.L. Browne, N.L. Johnson, L.A. Momoda, W. Barvosa-Carter B.R. Powell, Jr. (2006)

10. US 7,140,478 “Reversibly expandable energy absorbing assembly utilizing actively controlled and engineered materials for impact management and methods for operating the same” W. Barvosa-Carter, N.L. Johnson, A.L. Browne (2006)

11. US 7,130,034 “Metrology system and method for measuring six degrees of freedom for a point target“ W. Barvosa-Carter, C.G. Massey, B. Doty and G. Herrera (2006)

12. US 7,118,652 “Airflow control devices based on active materials” G.P. McKnight, C.G. Massey, G.A. Herrera, W. Barvosa-Carter, N.L. Johnson, A.L. Browne (2006)

13. US 7,108,316 “Energy absorbing assembly utilizing reversibly expandable mechanical structures for impact management and methods for operating the same” W. Barvosa-Carter, N.L. Johnson, A.L. Browne, G.P. McKnight, C.G. Massey (2006)

14. US 7,013,538 “Electroactive polymer releasable fastening system and method of use” A.L Browne, W. Barvosa-Carter, N.L. Johnson, L.A. Momoda, T.B. Stanford Jr. (2006)

15. US 7,013,536 “Releasable fastener systems and processes” M.A. Golden, J.C. Ulicny; A.L. Browne, N.L. Johnson, W. Barvosa-Carter, T.B. Stanford Jr., L.A. Momoda (2006)

16. US 6,991,280 “Airflow control devices based on active materials” G.P. McKnight, C.G. Massey, G.A. Herrera, W. Barvosa-Carter, N.L. Johnson, A.L. Browne (2006)

17. US 6,973,701 “Releasable fastening system based on ionic polymer metal composites and method of use” L.A. Momoda, A.L. Browne, N.L. Johnson, W. Barvosa-Carter, T.B. Stanford Jr. (2005)

18. US 6,920,675 “Process for attachment and/or disengagement of components” A.L. Browne, N.L. Johnson, B.R. Powell, Jr., W. Barvosa-Carter, L.A. Momoda, T.B. Stanford Jr. (2005)

19. US 6,815,873 “Releasable Fastener System” N.L. Johnson, A.L. Browne, W. Barvosa-Carter, L.A. Momoda, T.B. Stanford (2004)