Robert C. Cammarata


		Faculty

Robert C. Cammarata
Professor of Materials Science and Engineering

Ph.D. Applied Physics, Harvard University, 1985

M.S. Applied Physics, Harvard University, 1980

S.B. Materials Science and Engineering, Massachusetts Institute of Technology, 1979



Phone: 410-516-5462	Fax: 410-516-5293	E-mail: rcc@jhu.edu

Professor Cammarata's principal research interests are in the processing and mechanical behavior of thin films, especially nanostructured thin film materials. Examples of nanostructured films include artificially multilayered thin films and superlattices, nanoparticulate composite thin films, and nanocrystalline thin films. These materials are produced by magnetron sputtering and electrochemical deposition. The mechanical properties are investigated using ultrasonic, lowload microhardness, and nanoindentation testing methods. Nanostructured thin films display novel and often enhanced mechanical properties that can be directly related to the high density of interfaces or grain boundaries characteristic of these materials.

Professor Cammarata also has research programs concerning the effects of stresses on the stability and structure of thin films and surfaces. The effects of applied stresses on surface structure are being studied experimentally using low energy electron diffraction and scanning tunnelinT.M. Trimble and R.C. Cammarata, "Computer Simulation of Surface Reconstructions in (111) Oriented fcc Metal Surfaces," Mat. Res. Soc. Symp. Proc. 648, P3.22 (2001). g microscopy on single metal and semiconductor crystals subjected to bending under ultrahigh vacuum conditions. Computer simulations are being conducted to study the effects of surface and interface stresses on surface reconstructions in metals. Surface and interface stress effects on the growth of thin films and superlattices are also being modeled.

Selected Publication

I. Shao, P.M. Vereecken, C.L. Chien, P.C. Searson, and R.C. Cammarata, "Synthesis and Characterization of Particle-Re-Inforced Ni/Al2O3 Nanocomposites," J. Mater. Res. 17, 1412 (2002).

.J.A. Floro, E. Chason, R.C. Cammarata, and D.J. Srolovitz, "Physical Origins of Intrinsic Stresses in Volmer-Weber Thin Films," MRS Bulletin 27 (1), 19 (2002).

I. Shao, P.M. Vereecken, R.C. Cammarata, and P.C. Searson, "Kinetics of Particle Codeposition of Nanocomposites," J. Electrochem. Soc. 149, C610 (2002).

S.M. Prokes and R.C. Cammarata, "Novel Defect-Related Properties of Silicon," Defects and Diffusion Forum 200-202, 219 (2002).

R.C. Cammarata and K. Sieradzki, "Thermodynamics of Thin Film Epitaxy," J. Appl. Mech. 69, 415 (2002).

I. Shao, P.M. Vereecken, R.C. Cammarata, P.C. Searson, and C.L. Chien, "Electrochemical Deposition of FeCo and FeCo/TiO2 Nanocomposites," Mat. Res. Soc. Symp. Proc. 674, U5.3.1 (2001).

M.R. Stoudt, R. E. Ricker, and R.C. Cammarata, "The Influence of a Multilayered Metallic Coating on Fatigue Crack Nucleation," Int. J. Fatigue 23, S215 (2001).

T.M. Trimble and R.C. Cammarata, "Computer Simulation of Surface Reconstructions in (111) Oriented fcc Metal Surfaces," Mat. Res. Soc. Symp. Proc. 648, P3.22 (2001).

C. Freisen, N. Dimitrov, K. Sieradzki, and R.C. Cammarata, "Surface Stress and the Electrocapillarity of Solid Electrodes," Langmuir 17, 807 (2001).

R.C. Cammarata "Surface Stress Effects on the Intrinsic Stress of Thin Films," in Proceedings of the International Symposium on Adhesion Aspects of Thin Films, Volume 1, edited by K.L. Mittal (VSP, Utrecht, 2001) p. 31.

R.C. Cammarata, T.M. Trimble, and D.J. Srolovitz, "Surface Stress Model for Intrinsic Stress in Thin Films," J. Mater. Res. 15, 2468 (2000).

M.R. Stoudt, R.C. Cammarata, and R. E. Ricker, "Suppression of Fatigue Cracking with Nanometer-Scale Multilayered Coating," Scripta Mater. 43, 491 (2000).

J.B. Vella, A.B. Mann, T.P. Weihs, C.L. Chien, and R.C. Cammarata, "Nanoindentation Study of Amorphous Metal Multilayered Thin Films," Mat. Res. Soc. Symp. Proc. 594, 25 (2000).

M.R. Stoudt, R.C. Cammarata, and R. E. Ricker, "Influence of Nanometer-Scale Multilayered Thin Film on Fatigue Crack Initiation," Mat. Res. Soc. Symp. Proc. 594, 15 (2000).

C.H. Shang, T.P. Weihs, R.C. Cammarata, Y. Ji. and C.L. Chien, "Anisotropy in Magnetic and Mechanical Properties of Textured Hiperco FeCo Alloys," J. Appl. Phys. 87, 6508 (2000).

C.H. Shang, R.C. Cammarata, T.P. Weihs, and C.L. Chien, "Microstructure and Hall-Petch Behavior of Fe-Co-Based Hiperco Alloys," J. Mater. Res. 15, 835 (2000).

R.C. Cammarata, K. Sieradzki, and F. Spaepen, "Simple Model for Interface Stresses with Application to Thin Film Epitaxy," J. Appl. Phys. 87, 1227 (2000).

Cammarata, R.C, "Surface and Interface Stress Effects on the Growth of Thin Films," J.Electronic Mater. 26 (1997): 966.

Savader, J.B., M.R. Scanlon, R.C. Cammarata, D.T. Smith, and C. Hayzelden, "Nanoindentation Study of Sputtered Nanocrystalline Iron Thin Films," Scripta Mater. 36 (1997): 29

Cammarata, R.C., "Surface and Interface Stress Effects on Interfacial and Nanostructured Materials," Mater. Sci. Eng. A237 (1997): 180.

Cammarata, R.C., and K. Sieradzki, "Surface Stress Effects on Fracture," Mat. Res. Soc. Symp.Proc. 409 (1996): 87.

Cammarata, R.C., and K. Sieradzki, "Simple Model for Interface Stresses in Semicoherent Interfaces," Mat. Res. Symp. Proc. 405, 497 (1996).

Oberle, R.R., M.R. Scanlon, R.C. Cammarata, and P.C. Searson, "Electrodeposition and Hardness Behavior of Electrodeposited Ni-AI203 Nanocomposites," Appl. Phys. Lett. 66 (1995): 46.

Scanlon, M.R., R.C. Cammarata, D. Keavney, J. Freeland, J.C. Walker, and C. Hayzelden, "Mechanical Behavior of Fe-Ag (100) Multilayered Thin Films," Appl. Phys. Lett. 66 (1995) 19.

Oberle, R.R., and R.C. Cammarata, "Hardness of Cu-Ni Multilayered Films as a Function of Composition Amplitude," Scripta Metall. Mater. 32 (1995): 583.

Searson, P.C., R.C. Cammarata, and C.L. Chien, "Electrochemical Processing of Nanostructured Materials," J. Electronic Mater. 24 (1995): 955 .

Cammarata, R.C., "Surface and Interface Stress Effects in Thin Films," Prog. Surf. Sci. 46 (1994): 1.

Kim, C., S.B. Qadri, M.R. Scanlon, and R.C. Cammarata, "Low Dimension Structural Properties and Microindentation Studies of Ion Beam Sputtered Multilayer Ag-Al Films, " Thin Solid Films 248 (1994): 52.

Fisher, H.P., R.K. Eby, and R.C. Cammarata, "Surface Stresses in Paraffin and Polyethylene," Polymer 35 (1994): 1923.

Cammarata, R.C., "Mechanical Properties of Nanocomposite Thin Films," Thin Solid Films 248, (1994): 82.

Scanlon, M.R., and R.C. Cammarata, "Mechanical Properties of Granular Metal Thin Films," J. Appl. Phys. 76 (1994): 3387.

Cammarata, R.C., and K. Sieradzki, "Surface and Interface Stresses," Annu. Rev. Mater. Sci. 24, (1994):215.

Streitz, F.H., R.C. Cammarata, and K. Sieradzki, "Surface Stress Effects on Elastic Properties 1: Thin Metal Films," Phys. Rev. B 49 (1994): 10699.

Streitz, F.H., R.C. Cammarata, and K. Sieradzki, "Surface Stress Effects on Elastic Properties 11: Metallic Multilayeres," Phys. Rev. B 49 (1994): 10707.