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Clinton Van Siclen

Materials Science Department
Idaho National Laboratory
P.O. Box 1625
Idaho Falls, ID 83415-2211
Phone: (208) 526-0617
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Current Projects

  • Collaboration with Denis Clark (Idaho National Laboratory) and Bettis Atomic Power to understand the behavior and deleterious consequences of dilute sulfur in nickel-based alloys. This work is motivated by the problem of ductility dip cracking in welds. I am performing first-principles calculations (using the codes CASTEP and DMol3) to determine the diffusivity of sulfur in bulk nickel and at various grain boundaries and the segregation of sulfur to those boundaries.

  • Collaboration with Helen Farrell (Idaho National Laboratory) to calculate (again using CASTEP and DMol3) the thermodynamic properties of nanoparticles.

  • Development of a stochastic model to simulate solute diffusion in three-dimensional polycrystals. The simulations will reveal the influence of crystallographic-imposed spatial correlation of special and general grain boundaries on intergranular corrosion in polycrystalline materials.

  • Research Interests

  • Grain boundary engineering

  • Defects in solids and at surfaces

  • Classical transport properties (e.g., conductivity, diffusivity, and permeability) of heterogeneous media (e.g., composites and fractured or porous rock)

  • Development of stochastic (Monte Carlo) models and techniques for materials research

  • Application of statistical physics techniques and concepts (e.g., fractal descriptions, percolation theory, scaling laws, and correlation lengths) to materials research

  • Computational materials science in general.

  • Education

  • Postdoctoral Fellowship, 1982-1984, Johns Hopkins University

  • Ph.D. in Physics, 1982, Johns Hopkins University, thesis in theoretical atomic/solid state physics: “Radiative interference effects and crystal field splitting for ions in crystals”

  • B.A. (double) in Mathematics and Physics, 1975, Vanderbilt University.

  • Patents

  • U.S. Patent No. 5,490,187 - Method for Gas Bubble and Void Control and Removal from Metals (with Richard N. Wright).

  • Selected Publications

  • Van Siclen, C. DeW., “Stochastic method for accommodation of equilibrating basins in kinetic Monte Carlo simulations,” Journal of Physics: Condensed Matter, 19, 072201 (2007)

  • Van Siclen, C. DeW., “Spatial correlation of high-energy grain boundaries in two-dimensional simulated polycrystals,” Acta Materialia, 55, p. 983-989 (2007)

  • Van Siclen, C. DeW., “Intergranular fracture in model polycrystals with correlated distribution of low-angle grain boundaries,” Physical Review, B 73, 184118 (2006) (1.2MB pdf)

  • Van Siclen, C. DeW., “Effective diffusivity of solute in multiphase materials with segregation,” Journal of Physics and Chemistry of Solids, 65, p. 1199-1200 (2004)

  • Van Siclen, C. DeW., “Equivalent channel network model for permeability and electrical conductivity of fracture networks,” Journal of Geophysical Research-Solid Earth,      107 (B6), p. 2106 (2002)

  • Van Siclen, C. DeW., “Walker diffusion method for calculation of transport properties of finite composite systems,” Physical Review, E 65, 026144 (2002) (235kB pdf)

  • Van Siclen, C. DeW., “Walker diffusion method for calculation of transport properties of composite materials,” Physical Review, E 59, p. 2804-7 (1999) (92kB pdf)

  • Van Siclen, C. DeW., “Information entropy of complex structures,” Physical Review, E 56, 5211-5 (1997) (115kB pdf)

  • Van Siclen, C. DeW., “Random nucleation and growth kinetics,” Physical Review, B 54, p. 11845-8 (1996) (80kB pdf)

  • Van Siclen, C. DeW., “Single jump mechanisms for large cluster diffusion on metal surfaces,” Physical Review Letters, 75, p. 1574-7 (1995) (616kB pdf)

  • Van Siclen, C. DeW., “Migration of gas bubbles in solids towards vacancy sources,” Philosophical Magazine Letters, 72, p. 41-47 (1995)

  • Van Siclen, C. DeW., “Indium adatom diffusion and clustering on stepped copper surfaces,” Physical Review, B 51, p. 7796-7804 (1995) (1.9MB pdf)

  • Van Siclen, C. DeW. and W. G. Wolfer, “Nonequilibrium vacancy entrapment by rapid solidification,” Acta Metallurgica et Materialia, 40, p. 2091-2100 (1992)

  • Van Siclen, C. DeW., R. N. Wright, and S. G. Usmar, “Anomalous helium bubble diffusion in dilute aluminum alloys,” Physical Review Letters, 68, p. 3892-5 (1992) (721kB pdf)

  • Wolfer, W. G., C. DeW. Van Siclen, S. M. Foiles, and J. B. Adams, “Helium solubility in solid and liquid nickel,” Acta Metallurgica, 37, p. 579-85 (1989)

  • Van Siclen, C. DeW., “Muon-catalysed fusion as a finite Markov process,” Journal of Physics G: Nuclear Physics, 11, p. 267-76 (1985).

  • Page Contact Information:

    Department of energy

    DOE Office of Nuclear Energy
    DOE-Idaho Office